So, are you on the lookout for the best commercial tankless water heater?
Well, in this post, I would be walking you through some of the best commercial tankless water heaters available on the market.
Moreover, I would also be throwing light on “must-have” features in the buying guide section in order to help you make an informed buying decision.
Lastly, I would be responding to the queries related to commercial tankless water heaters review in the “FAQs” to help you clear most of your doubts if NOT ALL.
But, before that, I would be needing a small help on your end.
Are you willing to help me?
If your answer is “YES”, then all you need to do is to respond to a couple of questions that I would be asking you in a while.
Does it make sense?
So, which is your favorite tankless water heater brand?
Furthermore, how much are you willing to spend on a commercial tankless water heater?
Enough of questions, right?
So, without any further ado, let’s dive deep into the discussion.
How a commercial tankless water heater can serve your water heating challenges?
|Hot Water Needs
|Space savings, performance
|Sink, dishwashers, cooking, bathrooms
| Meeting high supply temperatures required by code with tight
| 1 high-efficiency tankless
|A 96% efficient unit provides
140-degree water for dishwashing and
cooking with no drop-off incapacity
|130 guest rooms,
| Efficiently meeting high peak
demand with tight space constraints
|17 tankless water heaters in 3 arrays
| By combining wall-hung tankless units
into arrays with common vents, the system
can fit into a tight mechanical space while
ensuring an efficient water supply that meets
|College Residence Hall
| Shower and bath facilities
for 120 residents
| Efficiently meeting high
peak demand alongside extended
| 3 high-capacity tankless
|With a total capacity of 750,000 Btus,
this array can easily be modulate to meet high-demand periods without the standby losses of
storage tank water heaters
| 500 guest rooms, 4
restaurants, large laundry facility
| Meeting high peak demand so
guests don’t experience cold showers
|175 tankless water heaters
|Rather than the expense of heating
enormous hot-water storage tanks, a large
the resort can efficiently meet demand when
needed and have peace of mind knowing
guests are happy
Which is the best commercial tankless water heater for the money?
To be honest, all the commercial tankless water heaters that have made it to our list are of high quality and worth your investment.
However, if you’re interested in knowing my “top pick” then definitely, I would be more than happy to share it with you.
- Rinnai RUC98iN Ultra Series Indoor Natural Gas Tankless Water Heater (Check the Current Price On Amazon)
Top 10 Best Commercial Tankless Water Heaters Review
I know most of the avid readers of this blog are inquisitive about the products that made the list for this year, right?
But, before that, please allow us to explain to you the process that we follow in shortlisting the top 10 products for review, in this case, it is commercial tankless water heaters.
First and foremost, our core team of experts comes up with a set of parameters on which we need to evaluate the products.
These evaluating parameters are assigned a certain weightage depending upon their ability to influence a buyer’s decision.
During the evaluation process, each product scores certain marks against these evaluating parameters.
Finally, we sum up the score to come to a conclusive decision of shortlisting the top 10 scorers.
In case, you still have any queries or doubts about our reviewing process then feel free to reach out to us, and we would be more than happy to assist you.
Rinnai RUC98iN Ultra Series Indoor Natural Gas Tankless Water Heater
Frankly speaking, Rinnai RUC98iN is my personal favorite, and I’ve been using it quite a few times now.
Even my clients have given great feedback about this idiosyncratic superlative commercial tankless water heater.
Have you ever used any of the Rinnai commercial tankless water heaters in the past?
If your answer is “YES” then you must be knowing the quality, durability, usability, and performance that these products come with, right?
The USP of this Rinnai commercial tankless water heater is the condensing technology that it comes with.
Well, technology not only takes the efficiency of the unit to the next level but also, helps you to save more on electricity bills than ever before.
The unit is small, compact, and sleek designed in order to meet the requirements of an indoor installation without fail.
With this unit, you get the option of Concentric or PVC venting, and it uses natural gas as a fuel.
Well, the thing that I really like about the concentric design is that it is safer as well as space-optimized.
Needless to say, the energy-saving factor for this premium offering from the brand is one of the best in its category and falls in the range of 0.92 and 0.96.
With a maximum output of 199,000 BTUs and thermal efficiency of 95%, the commercial heater is meant to deliver high performance with ease.
Along with other superlative features, it also comprises electronic ignition which might grab your eyeballs.
Not only does the heater ensures Ultra-low NOx emissions but also, comes with a 5-year warranty on the heat exchanger and parts.
I give this unit full marks for efficiency, accuracy in terms of temperature control, quiet operation, informative manual, and good customer service.
What I don’t like about this heater is the dip in the water pressure, and of course, the price at which it is offered.
Needless to say, if you’re on a shoestring budget, then this isn’t the commercial tankless heater for you.
Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater
The Rheem RTGH-95DVLN is a unique blend of quality and reliability.
It comprises of stainless-steel condensing heat exchanger and uses natural gas as a fuel for heating water.
The manufacturer claims that the unit is 94% energy efficient.
Moreover, it also comprises innovative and advanced electronic controls designed to help you with not only energy efficiency but also safety.
Well, if you’re looking for an ultra-low NOx model of tankless water heaters, then the unit might be a great fit for you.
Trust me, the brand Rheem doesn’t need any introduction at all and has proved its mettle time and again with fail.
This unit is no exception and is tested rigorously to meet the industry standards for quality and reliability.
Furthermore, the digital display that the commercial heater comes with will help you with the temperature settings as well as maintenance codes.
On top of it, a self-diagnostic system would help with easy installation and service.
A venting system is made of PVC and is a two-pipe direct vent.
The Rheem RTGH-95DVLN not only comes with high altitude capabilities but also freeze protection for temperatures as low as -30 °F.
Moreover, the kit includes 10 feet of thermostat wire, overheat film wrap (OFW), and an EZ-Link cable that will help you in linking multiple units.
I give the unit full marks for brand reputation, great performance, and long-lasting hardware.
What I didn’t like about the unit is the installation process which might turn out to be time-consuming and tedious, especially for first-time buyers.
So, it would be a good choice to opt for a professional for the installation if you’re not so confident about expediting the process on your own.
Remember, there is a risk involved with the installation, that is, a wrong installation might lead the warranty to be void.
Rinnai Indoor Tankless Hot Water Heater
So, here I’m with yet another great offering from the brand Rinnai.
The indoor tankless hot water heater provides you with not only endless hot water but also “on-demand” so there isn’t any standby heat loss-making unit highly energy efficient.
In order to bring hot water to the end users at a fast pace, the unit uses ThermaCirc360 technology that recirculates hot water through the pipes.
Unlike conventional water heaters, the Rinnai tankless water heaters have a compact and sleek design and can be installed even in non-traditional spaces including the attic, crawl space, closet, etc.
Currently, if you’re using a conventional water heater, and planning to switch to Rinnai then it could be a great decision, as the manufacturer claims that the unit consumes up to 40 percent less energy than the conventional counterpart.
Not only that, it has almost twice the life expectancy (20 years) as compared to a traditional water heater.
The R94LSi is capable of delivering up to 9.4 gallons of hot water per minute (GPM), and with the help of a concentric venting system, you can directly vent this unit to the outside system.
Lastly, the RL94IN isn’t only energy star certified but also comes with 12 years warranty on the heat exchanger and 5 years on parts.
Well, I give the unit full marks for its cost-effectiveness, idiosyncratic and innovative features including Wi-Fi monitoring, appearance, and product lifespan.
What I really don’t like about the product is the complex installation process, even the warranty could be a little more, and of course, the irritating noise that the unit makes.
Takagi T-M50NG Heavy-Duty Commercial Natural Gas Tankless Water Heater
The Takagi T-M50NG is a commercial tankless water heater manufactured under the brand name Takagi.
It weighs 112 lbs and is energy-star certified.
The unit is known to work quietly and produces a 56 dB noise level at maximum output.
Furthermore, T-M50NG is meant with a motive to deal successfully with the commercial application’s requirement.
Needless to say, the commercial heater would supply endless hot water and “on-demand”.
In case of a surge in the hot water demand in the commercial space, you can easily multi-link this unit to tackle the rising demand effectively.
On top of it, the unit offers a dual-combustion system for added redundancy.
When it comes to installation, the unit can be installed in both vertical or horizontal positions as per your requirements.
It also comprises electronic ignition, and with gas inputs of 380,000 BTU, the unit can serve up to 6 bathrooms in the warmer climate.
Features including a flame sensor, power vent, GFI, fuse, and surge absorber keep the unit safe and help it in achieving an optimum result with ease.
Rinnai C199EP Commercial Condensing Tankless Water Heater
The Rinnai C199EP is a commercial tankless water heater that is not only energy star certified but is also backed by 6 years warranty on the heat exchanger and 5 years on parts.
In case, you run a small business, then the Rinnai C199EP would be more than enough to cater to your hot water needs.
(Check Current Price On Amazon)
The unit has a small, compact, and sleek design that makes it possible to be installed in a tiny space as well.
On top of it, the installation process becomes more flexible because of the additional venting options that the unit comes with.
The unit provides an endless supply of hot water and “on-demand”, and could be a great fit for restaurants, hotels, and schools.
In simple words, the unit is equipped with all the essential safety and other features that you might be looking for in your commercial tankless water heater.
Since the unit doesn’t comprise a tank the standby heat loss is almost negligible, and so, heat loss to the environment is minimal.
You can either wall mount this unit or keep it free-standing, whatever suits you.
The C199 is a dedicated commercial tankless water heater that weighs 71 lbs and is definitely worth the investment.
Takagi T-M50 ASMELP Heavy-Duty ASME Certified Commercial Propane Tankless Water Heater
Well, so I’m here with yet another commercial tankless water heater from the brand Takagi.
The Takagi T-M50 ASMELP has a compact and sleek design, and wouldn’t consume much of your space.
The brand has always given high priority to safety measures and this tankless heater matches the expectation as well.
(Check Current Price On Amazon)
To add to it, the unit comes with computerized safety measures.
As per my knowledge and experience, the T-M50 comprises all the essential features including a flame sensor, power vent, GFI, fuse, and surge absorber required for heavy-duty commercial applications.
The unit is also energy-star certified and produces 56 dB noise at maximum output.
Not only does the unit possesses electronic ignition but also comes with vertical as well as horizontal installation options.
Well, with a gas input of 380,000 BTU, you can expect the unit to tackle your hot water requirement in an effective way.
Depending upon your hot water requirement and availability of space, you can install the unit indoors or outdoors, that is, the unit provides a lot of flexibility when it comes to installation.
It also comprises of recirculation system to help you get hot water instantly.
Rinnai C199EN Commercial Condensing Tankless Water Heater
The Rinnai C199EN is a commercial condensing tankless water heater that uses natural gas as a fuel and boasts 96% thermal efficiency.
Other than the brand reputation, the unit is also energy-star certified.
Like the aforementioned commercial tankless water heater models, it is also uniquely designed to be compact and sleek in order to get fitted in a tiny space without any hassle.
(Check Current Price On Amazon)
Whether you’re using Rinnai C199EN for your restaurant or hotel, it will provide you with an endless supply of water, and most importantly, on a constant basis.
The unit is equipped with the latest technology and advanced features including a maintenance alert that keeps you updated about the heater’s efficiency and performance.
In order to make installation flexible and hassle-free, the manufacturer has come up with additional venting options.
The heat exchanger is one of its kind and is uniquely designed in order to help the commercial heater not only achieve an optimum result but also, a longer lifespan.
On top of it, the unit is equipped with a standard Tankless Rack System™ that gives you the flexibility to opt for either a wall-mounting or a free-standing whichever is perfect for you.
Lastly, the commercial heater is backed by 6 years warranty on the heat exchanger and 5 years on parts which clearly depicts the trust and confidence that the manufacturer has in its offering.
Rheem RTG-64XLN 6.4 GPM Low NOx Outdoor Tankless Natural Gas Water heater
The Rheem RTG-64XLN uses natural gas as fuel and is mainly meant for outdoor installation.
You can expect a GPM of 6.4 at a temperature rise of 35 degrees which isn’t bad at all, isn’t it?
(Check Current Price On Amazon)
Not only is the product of a low NOx version but also features the next-generation burner technology in order to help you achieve an optimum result.
It is equipped with an all-copper heat exchanger and possesses an energy factor of 0.82.
In fact, the unit boasts about its high-altitude capability as it can operate up to 9,840 ft. elevation above sea level.
In order to keep the heat exchanger protected from unprecedented events, the tankless heater comes with the first line of safety in the form of overheat film wrap(OFW).
Just forget to mention, the minimum activation flow rate for this commercial heater is 0.40 GPM.
The components included along with the tankless heater are digital remote control, a 10 ft. thermostat wire, and a manual gas isolation valve.
On the downside, my expectation of customer support was a little more, indeed.
Takagi T-K4-IN-NG Indoor Tankless Water Heater
The T-K4-IN-NG commercial tankless water heater boasts its ability to reach a maximum GPM of 8.0.
Well, the brand has a great reputation and this tankless heater is in accordance with the quality that the brand offers.
Definitely, it’s a “value for money” commercial heater that also comes with an easy installation process.
(Check Current Price On Amazon)
The unit is also equipped with sensors that are capable of turning the heater on and off according to the water flow.
It can operate successfully with water pressure ranging between 15 PSI and 150 PSI.
On top of it, the unit is equipped with essential safety features that prevent overheating of the device by closely monitoring the temperature.
Moreover, the tankless commercial heater is lightweight, compact, and uniquely designed for wall mounting.
Since the unit is energy star certified so you can expect it to be energy efficient.
The power rating of the device ranges from 11,000 BTUs per hour to 190,000 BTUs per hour.
Lastly, the unit is backed by 12 years warranty on the heat exchanger and 5 years on parts.
On the downside, some of my clients have shown dissatisfaction with customer support.
Rinnai RL Series HE+ Tankless Hot Water Heater: Outdoor Installation
The Rinnai RL94EN is a natural gas-based tankless water and is a great fit for small-scale commercial applications.
Moreover, the brand boasts a flow rate of 9.4 GPM and is especially meant for outdoor installation.
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The unit is equipped with recirculation technology in order to help you achieve instant hot water without any hassle.
On top of it, the unit is compact and portable and can be easily installed.
Needless to say, the commercial tankless unit is one of the top-performing water heaters in its category.
Once you’ve installed the unit, you can expect endless hot water on demand.
Furthermore, the unit comes with a decent capacity and can supply endless hot water to as many as five plumbing and appliance outlets simultaneously.
The unit is both energy-efficient and cost-effective.
Lastly, the Rinnai RL94EN tankless water heater is not only energy certified but also comes with 12 years warranty on the heat exchanger and 5 years on parts.
On the downside, my expectation of customer service was a little more than what they had to offer.
Rinnai RL Model Tankless Hot Water Heater: Outdoor Installation
So, here I come with yet another offering from the brand Rinnai which doesn’t need any introduction at all.
The brand Rinnai is one of the most popular and well-trusted brands in the tankless water heater domain, and has proved its mettle time and again with fail.
(Check Current Price On Amazon)
Moreover, the outdoor tankless water heater by Rinnai has an output flow rate of 7.5 GPM and is more than sufficient to fulfill the hot water needs of a small business.
It also comprises recirculation technology that helps you to get instant hot water with minimal wait time.
The maximum and minimum power rating for this tankless water heater is 10,300 BTUs per hour and 180,000 BTUs per hour, respectively.
It also comprises advanced technology including Wi-Fi that makes it convenient for the users to operate it remotely effortlessly.
The energy factor on this tankless water heater is 0.82 and the uniform energy factor is 0.81.
The commercial tankless heater from the Rinnai is energy-star certified and suitable only for outdoor use.
Lastly, the unit is backed by 12 years warranty on the heat exchanger and 5 years on parts.
Noritz NCC1991-ODNG 199,900 BTU Commercial Condensing Tankless Water Heater
Many of you might not be aware of the fact that Noritz is one of the leading manufacturers of natural gas and propane tankless water heaters.
With Noritz NCC1991 you get a keypad as well as a thermostat display.
I personally like the freeze protection safety feature of this unit which allows you to work without any interruption even in cold climatic conditions.
(Check Current Price On Amazon)
Not only are they ultra-low NOx versions but also, comprised of a commercial-grade copper heat exchanger that definitely adds to the longevity of the product.
With 84 percent efficiency and up to 199,900 BTUs per hour, the commercial tankless heater is bound to deliver high performance.
In fact, it comprises almost all the elements that you might be looking for in your favorite commercial tankless water heater.
It also comprises of overheating prevention device that prevents the heater from getting overheated.
The flow rate ranges from 0.5 GPM to 11.1 GPM, and the temperature setting range varies from 100 °F to 185 °F in increments of five degrees Fahrenheit which will help you to achieve an optimum result.
This Noritz commercial tankless water heater weighs 77 lbs and the dimensions of the same are 13.8 x 10.6 x 22.3 inches.
AO Smith ATI-540H-N Condensing Residential/Light Commercial Tankless Heater
The A. O. Smith Corporation is one of the largest American manufacturers as well as a marketer of water heaters in the USA.
Moreover, they are in the business since 1874, and this time they have come up with a very diversified line of products in order to meet the demand of the end customers.
(Check Current Price On Amazon)
Well, heat pumps, water purifiers, water heaters, and storage tanks are some of the popular product lines of this brand.
With a maximum hot water flow rate of 9.0 GPM, the unit is meant for light commercial purposes.
The minimum and maximum power output for this unit is 13,000 BTUs per hour and 199,000 BTUs per hour respectively.
Moreover, the unit is safe, and durable, and has been tested for operations at an elevation as high as 10,100 feet.
The unit is also equipped with Air-Fuel ratio (AFR) sensors and other safety features including exhaust and water temperature monitoring.
In case of overheating, the fuse present in the unit will cut off the supply to keep you and the unit safe.
This tankless water heater weighs 59 lbs and the dimensions of the same are 12.5 x 18.5 x 29.5 inches.
The AO Smith ATI-540H-N comes with a multitude of installation options in order to help you expedite the installation process in a hassle-free manner.
It’s an easy link system that is capable of joining up to 4 units.
You can expect the unit to last longer as it comes with a corrosion-resistant heat exchanger.
Not only does the unit possesses automatic ignition but also is AHRI certified product.
Lastly, the ATI-540H-N is backed by 5 years warranty on exchange and 5 years on parts if you’re using it for commercial purposes.
Commercial Tankless Water Heater Buying Guide
Whether you’re a first-time buyer or a seasoned professional, this section would enrich you with all the necessary information required regarding a commercial tankless water heater.
It’s my humble request to all the readers to NOT skip this section, and reap the maximum benefits from the information that we’re gonna share with you.
In simple words, we’ve tried to the best of our capabilities to answer almost all the queries if NOT ALL, that you might have regarding what parameters to focus on as well as what features to look for.
Frankly speaking, when it comes to buying a commercial tankless water heater, size is an important parameter that depicts the number of faucets, showers, etc can the unit serve without compromising on the temperature of the hot water.
From incorrect size, I don’t only mean smaller but bigger as well.
In fact, a very small unit wouldn’t be able to cater to the needs of a commercial tankless water heater.
On the other hand, a commercial unit that is too big would be a liability as it would lead to the wastage of hot water as well as an increase in electricity/gas bills.
So, finding the appropriate size for your water heater is a must.
Well, if you’re looking for a commercial tankless water heater then you must understand that some businesses may require hot water round the clock while others might be needing it for a couple of hours a day.
Another thing that you should consider is the temperature and the climate in which you’ve to operate the water heater.
So, if you’re a resident of a cold region then you might be needing a more powerful and energy-efficient commercial tankless water heater as compared to you residing in a warmer zone.
Just for your information, a gas tankless water heater is said to be more energy-efficient as compared to its electric variant.
Well, location is yet another parameter that you need to consider seriously when it comes to buying a commercial tankless water heater.
If you’re planning to buy an indoor tankless water heater, then you must be aware of the fact that it will involve some kind of rework in terms of wiring or venting.
On the contrary, an outdoor installation wouldn’t involve much rework.
However, in the case of outdoor installation, if the distance between the faucet and the heater that is connected is too much, then it might affect the performance of the unit.
Almost all the commercial tankless water heaters that we’ve reviewed so far come with a manual that clearly depicts the flow rates at different groundwater temperatures.
These flow rates vary according to the temperature raises which are required from the unit.
Many of my clients get confused when it comes to selecting between an electric or a gas commercial tankless water heater.
And, most of the time, what I’ve felt is, confusion arises just because the buyer isn’t equipped with the necessary information that will help him to make an informed buying decision.
A gas tankless water heater is definitely more efficient but also comes with higher upfront and installation costs that can be attributed to the need for venting.
On the other hand, electric tankless water heaters are less costlier and the installation cost is also less as compared to the gas counterpart.
For outdoor installation, gas models are better whereas if the space consideration is too significant for indoor installation, they are not left with many options but to opt for electric tankless models.
Always look for commercial tankless water heaters that come with certain years of warranty.
I always suggest my clientele refrain from not only buying a water heater but any product which doesn’t come with a warranty.
Fortunately, almost all the products that made our list come with certain years of warranty.
The more the warranty the better it is.
It’s always good to have a product that is user-friendly and convenient to use.
In case, you want to dig more about a particular brand or model then my advice to you would be to look for the experience of other customers, and also, the reviews that they have left for the specific models.
By doing so, you’ll get a fair bit of idea about what to expect in terms of quality, service, and performance.
It goes without saying that the price is an influencing buying parameter as most of us have a certain budget in our mind while buying a product.
Moreover, if you’re on a shoestring budget then irrespective of your interest in a premium product, you can’t buy it, right?
So, always look for products that not only cater to your needs but also fall well within your budget.
How do tankless water heater boost performance in commercial buildings?
Well, if you’re a first-time buyer then you might not be well aware of the fact, that commercial tankless water heaters can offer commercial buildings big improvements in terms of NOT only performance but also energy use, and energy costs.
Especially, if you’re installing an energy star-rated commercial tankless water heater, then you can expect a tangible reduction in the electricity bills as it uses 25 percent less energy than a conventional water heater for heating the same amount of water, and raising its temperature to the same level.
So, how does a commercial tankless water heater work?
Unlike a conventional water heater that stores the water in a tank, the commercial tankless water heater has nothing to do with the storage of hot water.
Instead of storing water, what actually a commercial tankless water heater does is, uses a heat exchanger to heat water “on-demand”, and supply it to the end-user instantly.
Let’s understand it with an example.
Suppose you own a hotel and have installed a commercial tankless water heater.
Let’s see how will it work for your customers.
When the customer will turn on the shower in your hotel room, a propane or natural gas burner in the tankless unit will quickly heat up the heat exchanger.
However, there are some highly efficient premium models, in which the incoming cold water is preheated from the combustion exhaust.
Then the water continues to be heated as it passes through the unit’s heat exchanger and exits from the tankless unit at the hot-water outlet pipe, where it then flows to the shower to meet the hot water demand.
How to use a commercial tankless water heater effortlessly?
If you’re a first-time buyer then you might not be aware of the fact that all the states have their own regulations and codes that you need to follow for the installation of a tankless water heater without any hassle.
The regulations are very important especially if the installation of a tankless water heater involves natural gas or propane.
Make sure that none of these state codes get violated during the installation.
During the installation, you also need to ensure that safety guidelines are followed strictly in order to prevent any last-hour misadventure.
It’s always good to hire a professional for the installation purpose in case, you’re a first-time buyer, and not very confident in expediting the installation process on your own.
Moreover, if you’re installing a commercial gas tankless water heater then you should be aware of the fact that the gas pressure is pre-set in most of the models by the company itself and shouldn’t be tampered with.
Moreover, whether you’re installing the unit indoors or outdoors, you need to make sure that enough space should be ensured around the heater so that routine maintenance and repairs can be taken smoothly.
In the case of a commercial gas tankless water heater, there should be enough ventilation in order to ensure that the device gets sufficient air for combustion.
A model that is designed for an indoor installation should strictly be installed indoors and the one for outdoor installation should be installed outdoors.
To be honest, I don’t prefer an attic as a place for installing an indoor tankless water heater, and the reason is quite simple, that is, higher susceptibility to running out of proper air for combustion.
At the same time, when the unit is installed in locations where there are chemicals bound to be present in the air, like beauty salons, factories, or dry cleaners, it is recommended that you should use direct venting.
Proper venting equipment should be used which is specifically designed for the particular model.
Once you’ve expedited the installation process successfully, the water heater will work pretty much without much intervention from the user.
Commercial Tankless Water Heater Maintenance
If you’ve ever used a residential tankless water heater then you’ll not find much difference with respect to a commercial tankless water heater.
One of the very common problems faced by any commercial tankless water heater is the hardness of the incoming water.
And, unfortunately, this can lead to premature corroding of the sensitive components of a water heater and affects its life.
Well, in most cases, there is usually an anode rod that is installed inside the water heater to attract the corrosive elements.
However, the heat exchanger which is generally made of copper for better performance may get affected.
Let’s quickly look at some of the steps that we can take to get rid of the problem.
One of the easiest ways to get rid of the problem is to remove the limescale by simply flushing the system with white vinegar.
You should follow the below steps so that flushing is done properly without any hassle.
First and foremost, you should ensure that the manufacturer’s cleaning instruction is followed.
Once you’re thorough with the instructions mentioned in the manual, go ahead with the below steps.
Turn off the water heater before starting the cleaning process.
Then, remove the cover.
Moving further, you can remove the valves in order to relieve the pressure from the water heater.
Once you’re done with the aforementioned steps, the next thing that you need to do is to attach the hose line to the valves.
In the next step, you can open the valves, and allow the rinsing solution to enter the system.
The vinegar solution can be prepared depending upon the severity of corrosion and cleaning needed.
In the next step, you need to flush the unit with the solution till all the impurities are cleaned out.
Remove the hose pipes and replace the valve as before.
Place the lid back on the unit again, and you’re done.
Gas Commercial Tankless Water Heater Advantages
Let’s have a quick look at some of the benefits of a commercial tankless water heater.
It goes without saying that a tankless gas water heater has a greater capacity as compared to an electric counterpart.
As compared to an electric tankless water heater, the gas heater can achieve better temperature raise for the same groundwater temperature.
Needless to say, a gas commercial tankless water heater would be able to heat the water more efficiently as compared to its electric counterpart keeping the input water temperature the same.
The utilization of gas is much more optimized than electricity and it will definitely cost you less to heat the water using a gas model than the electric model.
Frankly speaking, the availability of natural gas or propane is much more stable and uninterrupted as compared to the availability of electricity.
It wouldn’t be wrong if I’ll say that most regions cannot guarantee a steady supply of electricity, and in case of a power outage, definitely, the performance of the electric tankless water heater will get compromised.
On the contrary, a gas supply line is much more reliable and least affected by external factors.
Trust me, to adversely impact the supply of gas, a huge disaster needs to happen.
Gas Commercial Tankless Water Heater Disadvantages
A gas commercial tankless water heater comes with its own share of drawbacks.
Let’s have a quick look at each one of them precisely.
It goes without saying that most of the gas tankless water heater models come with extensive venting requirements.
The unit should’ve got proper inlet and outlet pipes connected to ensure that the required oxygen and gas are supplied sufficiently.
Unfortunately, if you’ve got a scarcity of space then indoor installation can become a tedious and time-consuming task for you because venting requires a lot of space.
In case of scarcity of space, you might have to change the indoor configuration as well.
Needless to say, a gas leak can be a dangerous safety hazard, and the danger increases multifold if the unit is installed indoors.
The NOx emissions are yet another important factor to look for.
Well, when the heater is installed indoors, a proper flue system has to be placed in order to ensure that all these emissions, however low they may be, are carried outside safely.
As discussed earlier, a gas model requires a proper ventilation system in order to prevent any last-hour misadventure.
What actually I mean is, equipment specific to each model needs to be purchased to ensure that the unit operates safely.
I’ve always recommended my clientele allow only licensed technicians to carry out the installation process.
So, all these costs build up and become significantly higher as compared to the electric counterpart.
Electric Commercial Tankless Water Heater Advantages
Let’s have a quick look at some of the advantages of an electric commercial tankless water heater.
A Perfect Fit for Small Appliances
Time and again, I’ve said that electric models are perfect for point-of-use applications, which is the need of most businesses if NOT ALL.
Frankly speaking, if your business doesn’t require hot water in vast quantities around the clock, then an electric model will do the trick for you.
The benefit of using an electric tankless is that it prevents standby loss as well as the loss that might occur due to installing a unit whose capacity is greater than most of the requirements.
Needless to say, the electric models of tankless water heaters are less expensive as compared to the gas models.
Also, the associated installation cost is on the lower side because venting isn’t required.
And, the cost of operation is also low.
Since there isn’t any emission involved in the operation of the electric tankless water heater so it’s definitely good for the environment.
Not only the model is completely clean but also there is a significantly less carbon footprint involved.
As we all know that electricity price doesn’t fluctuate too much as compared to propane or natural gas, so you don’t have to deal with a sudden surge in the price.
Electric Commercial Tankless Water Heater Disadvantages
Let’s have a quick look at some of the disadvantages of an electric commercial tankless water heater.
Frankly speaking, an electric commercial tankless water heater isn’t as energy efficient as its gas counterpart.
To be honest, the electric tankless finds it really difficult to achieve the same temperature raise as a gas model with the same incoming groundwater temperature.
Slow Heating Time
Well, an electric tankless water heater is slower to heat the water to the desired temperature.
Also, if the distance between the heater and the shower is more than usual then there is energy wastage in the form of heat loss to the environment as the hot water travels through the pipes.
Susceptibility to Power Outages
It goes without saying that power outages or power surges can be a frequent occurrence in your region, and this might impact adversely the supply of hot water for your business if you’re solely dependent on the electric tankless water heater.
Personally, I find it the biggest drawback of an electric commercial tankless water heater as it can have a large impact on your business if your business demands a constant supply of hot water.
Well, in this section, I would be responding to the queries related to commercial tankless water heaters in order to help you make an informed buying decision.
Do commercial tankless water heaters pose any safety issues?
Well, almost all the commercial tankless water heaters that we’ve reviewed so far come with essential safety measures in order to deal with unprecedented situations effectively.
In fact, the majority of commercial tankless water heaters comprise overheating and overpressure protection systems.
In case, any unprecedented happens, the system will either shut off automatically or will inform you about the malfunction.
Is it effortless to install a commercial tankless water heater?
Well, it depends upon the model that you’ve opted for.
The electric commercial tankless water heaters are easier to install and don’t require venting.
On the other hand, a gas commercial tankless water heater involves a complex installation process, and also, a huge installation cost.
Wrapping Up the Commercial Tankless Water Heater Review
First and foremost, I would like to thank you for being with us till the end.
Secondly, I along with my team have put loads and loads of effort into coming up with this comprehensive buying guide.
And, in case, you’ve loved our effort, then please do share this piece of information with the ones who are in need of it.
After all, sharing is caring, isn’t it?
Coming back straight to the topic, all the commercial tankless water heaters that have made it to our list are worth the investment.
And, trust me, you’ll never REGRET investing in them for sure.
Honestly speaking, there isn’t anything like the “best” commercial tankless water heater.
In fact, what may be best for you might not even cater to my needs, and vice-versa.
In simple words, the most expensive products aren’t always the best and the cheapest aren’t always the worst.
So, look for commercial tankless water heaters that not only cater to your needs but also fall well within your budget.
Last but not least, please do let us know in the comment section about your favorite commercial tankless water heater, and also, whether it made our list or not.