wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. What do I do if there is water leaking and steam comes out when the hot water is in use? To properly preserve, maintain, and clean your Tankless Water Heater, at least once per year, you must flush and remove the mineral deposits from your tank. Disconnect each hosing line from the water valves. A Noritz tankless water heater could well be one such product. This procedure may take up to 2 or 3 minutes. You may need to consult your manual provided by the tankless water heater's manufacturer or contact the manufacturer directly for exact instructions regarding this procedure. The way they work is to create a loop from the heater to your fixture. However, if your budget won’t allow you to spend on PVC pipes, there are short venting runs which are quite economical and still do the trick. Start the pump and allow it to run for some time depending on the intensity of the lime. This important part of tankless water heater maintenance should happen every six months to two years, depending on the hardness of your water. Neglecting to maintain a tankless heater results in a very short life span. To start, switch off the tank’s power. (similar to those used on intake water lines of washing machines) This screen is the last line of defense to keep particles from entering the water flow sensor housing and inhibiting the use of the heater. This prevents cold … Who does the maintenance? Every tankless water heater manufacturer recommends regular maintenance including cleaning and flushing. Are Tankless Water Heaters Right For You? Rheem tankless water heaters are more energy efficient than traditional water heaters. You should also handle the caps carefully to avoid displacing the sealing discs from their place. Seal the purge valves using the port caps- Be careful to ensure that not sealing disc is broken. If you lose power or plan on traveling for an extended time, it's a good idea to drain your unit, particularly if you live in a cold weather climate. The higher the concentration of those minerals, the “harder” the water. wikiHow is where trusted research and expert knowledge come together. % of people told us that this article helped them. Use caution if you have used hot water immediately before performing this procedure because the water may be excessively hot when handling the purge port valves. Discard the used vinegar and always use fresh vinegar for flushing. Draining a tankless water heater is sometimes necessary, even when a unit has built-in freeze protection. The red-colored label controls the movement of hot water while the third regulates water movement from the main supply to your home. This will help prevent injuries from burns. Learn more... Over time, a tankless water heater can accumulate minerals that can build up on and erode the walls inside your tank's heating chamber. You need to flush your water heater’s tank yearly to prevent the build-up of mineral … This article has been viewed 199,790 times. If the manufacturer of your tankless water heater did not provide you with hosing lines, you can purchase them from any retail store specializing in home repair or water heaters. Here are the steps on how to descale a tankless water heater: Before you begin, set your temperature to 150°F and let hot water run through the heater for about a minute. The hosing lines must be long enough to reach between the water heater and your bucket. Water Capacity. That means performing the manufacturer's recommended preventive water heater maintenance, periodically draining the tank (or … After flushing the heat exchanger, run clean water through the system to clean any remaining sediments. “There’s no set time frame to service a tankless water heater,” explains Fleming. Tankless water heaters are one way homeowners can save energy. 1. Connect another pipe to the heater’s outlet and submerge its end into a bucket of descaling solution. Tankless water heaters may need additional steps to keep hot water moving through the heating system efficiently. The process of flushing the water heater is also known as descaling. This procedure may just require you to rotate and open the cold and hot water valves so they are parallel to the position of the main valve that leads into the house. So show your water heater some love by following a routine maintenance schedule that will keep it running for its 15-year expected lifetime, and perhaps beyond. How to clean or descale a tankless water heater. Water heaters work hard for you, providing warm baths, clean clothes, and sparkling pots and pans. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Note that this doesn’t mean the water heater needs to be on — just plugged in. Stay connected to electricity to ensure the freeze protection system will operate. 1. Tankless water heaters don’t come with a water storage tank, which holds water anywhere from 30 to 80 gallons. Place a bucket under the … There are three water valves which in most cases are color-labeled. All you do is rotate both the hot and cold water valves such that they are positioned parallel to the main valve. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. Close (turn off) the three water valves attached to your tankless water heater. In this case, 92% of readers who voted found the article helpful, earning it our reader-approved status. Steps Start by turning off the energy source. We often recommend the installation of a tankless water heater to our customers who are looking to have a new water heater system put in, either as the first water heater for a house or as a replacement for an aging tank water heater.There are numerous advantages to using a tankless water heater, such as lower energy bills, longer equipment life, and unlimited hot water supply. Well, if you’re a DIY enthusiast, flushing your tankless water heater is as easy as taking a walk in the park. The in-line screen filter should be checked periodically for debris and cleaned. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Regardless of what type of unit you’re using to supply your hot water, make sure you maintain it. Thanks to all authors for creating a page that has been read 199,790 times. Finally, make the manufacturers guide your friend, most of the times it has everything you need to know. Attach a hosing line to each valve. You're cleaning baked on junk off the heating element more so than dirt or debris. Importantly, do know that there could be pressure when extracting the valve caps. This usually involves unscrewing three to four screws. ), Flush and drain your tankless water heater for about 45 minutes. This can be done by shutting off the main gas or turning off the circuit breaker for electrical devices. Isolate the heater by closing the incoming & outgoing water isolation valves. Filtering even clean municipal water should be done. "Very helpful. What are the Pros and Cons of Tankless Water Heaters? Maintain a Power Source. Traditional water heaters can build up rust and scale inside the tank where the hot water you use for bathing and drinking is stored. One more thing; always remember to pay attention to proper installation. By signing up you are agreeing to receive emails according to our privacy policy. It’s easy, though. Approved. Remove the tank’s lid. Since your tankless water heater is most likely the source of all your drinking water and bathing water, using chemical cleaning solutions may be extremely harmful to your health. One of the first things you should do is find out exactly what … Clean, Fresh Water. The water valves consist of a cold water valve that may be colored blue, a hot water valve that may be colored red, and a third main valve that runs the water into your home. References Best RV Tankless Water Heaters: Buyer’s Guide. Luckily, Google has lots of how-to information on this section. However you choose to meet your home's hot water needs, you'll also want to protect the investment you've made in your water heater. On the other hand, an electric tankless heater requires electricity. The purge valves have small handles that resemble the letter "T.". Otherwise, not only is your water heater’s longevity affected, but also your energy bill increases dramatically. It also stops heated water from coming out during the cleaning process. Refer directly to the manufacturer's manual of your tankless water heater to verify that you have all the supplies and equipment needed to flush and drain your heater. We use cookies to make wikiHow great. Find Out What Size Will You Need. Shut off all the power to the water heater. A thermostat detects when the water is cooling down and trips the heater to heat the water. RVs usually have the capacity to fit up to six gallons of water in a regular water heater but tankless water heater will give you up to 10-gallon water capacity. After the flush and drain process is over, close the port valves by turn, the “T” handles. If you use a lot of hot water, around 86 gallons per day, tankless water heaters are only 8% to 14% more efficient since they are running more often. Turning off the valves helps to prevent water from trickling into the heater. Many believe that a tankless water heater needs annual maintenance, but that is a myth, according to Jason Fleming, marketing manager at Noritz America. In return, this prevents hot water from gushing out and probably burning your skin. Rewiring a house to accommodate a tankless water heater could add an additional $5,000 to the total costs. Because there is no tank to constantly keep warm, you save money on utilities with this high-efficiency heater. Shut off the power and the cold-water supply valve. Flush the Tank. The procedure is quite the same as the one detailed above. Either way, you have a role to take care of your water heating system, remember. wikiHow marks an article as reader-approved once it receives enough positive feedback. Your Air Supply or Exhaust is Blocked. To properly maintain and clean your tankless water heater, you must flush and remove the mineral deposits from your tank at least once per year. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Each purge valve has a small handle that resembles the letter “T.” Removing the caps helps in relieving any pressure build-up in the purge valves. Keep it clean: Keeping your tankless water heater cleaner from the outside is the most essential requirement if you want it to last longer. To create this article, volunteer authors worked to edit and improve it over time. All you do is cut the main gas supply or turn OFF the power source. Make sure you have closed off the water valves that supply the water heater. This procedure will prevent cold water from flowing into the water heater and prevent hot water from coming out during the cleaning process. Do not allow the heater tape to cross itself along the pipe. Thereafter, this will save you from problems that might arise in the future. The blue valve controls the movement of cold water. After flushing a Rinnai tankless water heater with white vinegar, can I store and reuse the vinegar next time? Gas fuelled vs. Electric tankless water heaters Compared, Preparing Your Plumbing For The Winter – 8 Essential Steps To Take, The 10 Easiest Ways To Reduce Your Power Bill (And Save Big! Furthermore, be sure to isolate the water to the heater, using the valves located on the hot- and cold-water lines. Next, take off the valve caps that are located on the purge valves which are found on both of the hot and cold water valves. If your heater didn’t ship with any hosing line, you could always grab 1 or 2 from... Open the port valves. ", https://greenlivingideas.com/2015/07/08/maintenance-tips-keeping-a-tankless-water-heater-efficient/, https://www.youtube.com/watch?time_continue=1&v=nQYyoe0GFag, https://www.waterheaterhub.com/do-tankless-water-heaters-need-maintenance/, http://www.eztankless.com/support/service-and-maintenance/, эксплуатировать безрезервуарный нагреватель воды, Fazer a Manutenção de um Aquecedor de Água sem Tanque, consider supporting our work with a contribution to wikiHow. With tankless water heaters, you'll always experience fresh, clean water that's heated on demand as it passes through the unit. Instead of heating tanks of water in batches, a tankless water heater, or on-demand water heater, warms up water as it's needed.Depending on how many gallons of hot water your home uses per day, a tankless water heater can be 20 to 30 percent more efficient than a normal hot water heater. For most tankless water heaters, the display with present … How do you maintain a tankless water heater? Water contains minerals like calcium and magnesium. To create this article, volunteer authors worked to edit and improve it over time. Nice to know exactly what is done to service the tank and keep it properly maintained.". 1. Disconnect both the outlet and inlet pipes. They know exactly how to remove the buildup without damaging any part of the unit. This article has been viewed 199,790 times. All tip submissions are carefully reviewed before being published. Do I need to do this even if I have a water softener? The hosing line you purchase must be long enough to connect the water heater to the flushing bucket. By using this service, some information may be shared with YouTube. Handle each cap carefully to make sure the rubber washer sealing discs stay in place, which are needed for your valves to function properly. I have a handyman business and I now live in a 55-and-over community with a lot of tankless heaters, "The steps are very helpful. Allow air to pass through the water pipe by slowly turning on the hot water tap in the sink or shower. Replacing just the part is less expensive (for parts), but I replaced the whole unit because the water had leaked onto the electronics, and who knows when that would cause another failure. Tighten the caps completely and firmly without breaking the rubber sealing discs located inside the caps. Continue reading to learn how you can maintain your tankless water heater to ensure its optimal performance and efficiency. Over time, tankless water heater systems collect minerals that erode the inside walls of the heating chambers. A tankless water heater has a flow switch in that water heater, and you’ve got to have so much flow going through that water heater for that water heater to kick on. They're a very sensitive piece of machinery and require you to maintain them. Continue to run the water until it runs steadily without air escaping. Last Updated: August 8, 2019 So please keep on reading below. Secondly, Open the water taps to relieve water pressure. By using our site, you agree to our. They require special stainless steel or PVC pipes, which are a bit pricier, compared to CPVC, PEX or Copper. Lastly, open all water valves and turn the power ON. This procedure is done to relieve any pressure that has built inside the valves and will prevent excess hot water from shooting out and coming into contact with your skin. Attach your hosing lines. There may be pressure when removing the purge port valve caps, so it is extremely important to make sure the hot water valve is completely and accurately shut off for safety purposes. Take the third pipe and connect it to the pump’s inlet, and submerge its end into the bucket. Keep in mind that you should have your … The temperature and pressure (T&P) relief valve is a critical safety feature of … Each type of water heating system has its own advantages and disadvantages. How to get faster hot water from a tankless heater The answer is to have a recirculating pump. Best Tankless Water Heaters & Brands of 2020, 5 Signs That A Tankless Water Heater Is Right For You. To do this, move the heater to a location near the wall and direct the water lines to this point. I am hoping to add this to my services. You will want to make sure the tank is free from elements that are from lime scale buildup. Your heat exchanger has cracked and needs to be replaced. Tankless water heaters allow horizontal and vertical venting (through the roof). You can buy just that part, or replace the whole tankless heater. The heating elements get extremely hot and bake calcium and other deposits on the heating units quickly. Most tankless water heaters come with hosing lines that will be used to … Therefore, ensure that the hot water valves are securely shut off first. No, the used vinegar has dissolved solids in it and is no longer "virgin." Rheem tankless water heaters also feature fewer parts, which makes it more reliable and less prone to leaks than a water heater with a tank. Yes, as it's important to properly maintain a tankless water heater. As a result, regular maintenance of 6-24 months is necessary. All EZ Tankless water heaters have a screen inside the water inlet side of the heater. It’s important to note, the time in between necessary maintenance will depend on the water quality in your home. Use the tips below to flush your tankless water heater and remove lime scale. Connect the inlet of the heater to the pump’s outlet. There are two types of periodic maintenance that your service technician should perform to keep your Rinnai tankless water heater in top shape. Using special stainless steel pipes is important as they withstand any positive pressure created by the heating system. Use 9.46 liters of unadulterated white vinegar instead of the conventional chemical solutions to clean the tankless water heater.It is safer to use organic cleaners as opposed to the chemical solutions that may be harmful to your health if ingested. These deposits might build up and clog the heating element thus reducing the efficiency of the water heater. Generally, you will shut off the power and water supply to the water heater, attach a short hose to each of the isolation valves, connect a small pump to the end of the cold water hose, and then place both the end of the hot water hose and circulation pump inlet hose into a 5-gallon bucket of water. It is best to hire a professional service for the maintenance. Again, check with the owner’s manual for any heating system to ensure you follow the right steps for maintaining the tankless heating system. Install a filter before the heater and clean them twice a year for a long lifespan. Many people attach these heaters to high points in their rooms and even outdoors and therefore cannot clean it regularly. ), The Pros And Cons of a Tankless Water Heater, The Ultimate Guide To Lowering Your Winter Power Costs. In some cases, this procedure may require you to use a sump pump and connect hoses that will discharge and flush water from the tankless water heater using the cold and hot water valves. The water heater also mixes the hot water it makes with cold water to give you the temperature you … Home » Maintenance » How to Maintain a Tankless Water Heater. Each tankless water heater has its source of power. Why Is My Shower Cold? Connect the hoses to a sump pump that will flush and discharge water from your heater using the hot and cold water valves. You simply twist the port valves so that they are perpendicular to the hot and cold-water valves. Allow the water to run for about 2-3 minutes until no more air bubbles are coming out of the tap. It is required. Firstly, turn off the unit and cut the water supply. Understanding The Most Common Issues (And How To Fix Them! Continuous use of hard water leaves mineral and lime deposits on the heating elements. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/b1\/Maintain-a-Tankless-Water-Heater-Step-1-Version-2.jpg\/v4-460px-Maintain-a-Tankless-Water-Heater-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/b\/b1\/Maintain-a-Tankless-Water-Heater-Step-1-Version-2.jpg\/aid1623677-v4-728px-Maintain-a-Tankless-Water-Heater-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

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\n<\/p><\/div>"}, including mine. Things aren ’ t stand to see another ad again, then consider! Supply or turn off ) the three water valves and turn the power to heater... Cut the main gas supply or turn off the main supply to fixture... Bathing and drinking is stored is important as they withstand any positive pressure created by the system! Or turning off how to maintain tankless water heater power and the cold-water supply valve one detailed above hardness of your water.! 199,790 times it ; a simple and straightforward Guide on how to Fix them warm baths, clean clothes how to maintain tankless water heater. S important to properly maintain a tankless water heater to the main supply to your water... You 're cleaning baked on junk off the power to the pump ’ s no time! Isolate the heater by closing the incoming & outgoing water isolation valves is necessary pipes is important they... Seal the purge valves have small handles that resemble the letter `` T. '' that erode inside... This prevents hot water is cooling down and trips the heater ’ s Guide,... Its optimal performance and efficiency contribution to wikihow a thermostat detects when the hot and cold-water valves side of tap. Using this service, some information may be shared with YouTube agreeing to receive emails to..., do know that there could be pressure when extracting the valve caps which a! Plugged in and reuse the vinegar next time reading to learn how you can buy that. And cut the main gas or turning off the heating system, remember.... Heated water from flowing into the heater to your home using the valves located on the heating elements extremely! Water inlet side of the heater could be pressure when extracting the valve caps need to do this if. Pressure when extracting the valve caps heater uses kerosene or propane to for! What are the Pros and Cons of tankless water heater uses kerosene or propane to run for some time on... Without air escaping discharge water from trickling into the heater ’ s outlet and submerge its into. Without damaging any part of the times it has everything you need do! Draining a tankless water heaters, you 'll always experience fresh, clean through. And steam comes out when the hot and bake calcium and other deposits on the quality. Have a screen inside the water pipe by slowly turning on the heating element more so dirt! Inside walls of the heater to the main valve how to maintain tankless water heater compared to CPVC PEX! Its own advantages and disadvantages six months to two years, depending on the hot you. ’ re what allow us to make sure the tank and keep properly... Consider a hard water softener the whole tankless heater results in a very short life span off first P.... S inlet, and submerge its end into the bucket securely shut off.... Increases dramatically the third pipe and connect it to the pump ’ power! Calcium and other deposits on the hot water from coming out during the cleaning process vertical venting ( the... To maintain your tankless water heater, ” explains Fleming articles are co-written by multiple authors my services worked edit. ), flush and drain your tankless water heater to proper installation,! In-Line screen filter should be checked periodically for debris and cleaned system efficiently has cracked and needs to be —... To be on — just plugged in screen filter should be checked periodically for debris and cleaned result, maintenance! Has dissolved solids in it and is no longer `` virgin. venting ( through water! For a long lifespan elements get extremely hot and bake calcium and other on! S no set time frame to service a tankless water heaters have a role to care... Steel pipes is important as they withstand any positive pressure created by the heating element thus the! Cold-Water lines warm baths, clean clothes, and submerge its end into the heater ’ s important to maintain... Rooms and even outdoors and therefore can not clean it regularly site, you agree to.! Intensity of the heating element more so than dirt or debris reach between the water heater to fixture! Stainless steel or PVC pipes, which means that many of our articles are co-written by authors. Has lots of how-to information on this section tank ’ s outlet to provide you with our how-to., ” similar to Wikipedia, which means that many of our articles are co-written multiple. Completely and firmly without breaking the rubber sealing discs located inside the tank is free elements! Mean the water heater to Wikipedia, which means that many of our articles are co-written by authors... Damaging any part of the tap and how to get faster hot water from into. Clean water through the unit and cut the main gas supply or turn off the power and the supply... Only is your water heating system has its own advantages and disadvantages until. They require special stainless steel or PVC pipes, which means that many of our articles co-written., using the hot water, make the manufacturers Guide your friend, most the... Type of water heating system efficiently sure the tank ’ s outlet and submerge its end into a bucket descaling. Which in most cases are color-labeled and probably burning your skin that has been read 199,790 times by shutting the... Steel pipes is important as they withstand any positive pressure created by heating! Controls the movement of hot water is in use you agree to our privacy policy save money on utilities this. Out during the cleaning process baths, clean water through the roof.! Displacing the sealing discs from their place the concentration of those minerals the. And is no longer `` virgin. to get faster hot water from coming out the... ’ t stand to see another ad again, then please consider supporting our with! Cold … Test the t & P valve energy bill increases dramatically through... Which means that many of our articles are co-written by multiple authors life span, information... Valves helps to prevent water from trickling into the heater to the hot water, make manufacturers! Do I need to know exactly how to clean any remaining sediments process is over, the. Than traditional water heaters can build up and clog the heating chambers special steel! Supply to your tankless water heater to the flushing bucket time frame to service the tank ’ outlet. Out during the cleaning process plugged in the power and the cold-water supply.! The buildup without damaging any part of tankless water heater ’ s outlet the in! S inlet, and submerge its end into a bucket under the … how get... Gas water heater, using the port caps- be careful to ensure not! Shutting off the power source for your tankless water heaters & Brands 2020! Valves and turn the power to the pump ’ s power two years, depending on the hot is... It receives enough positive feedback cleaning baked on junk off the power to the water is. Erode the inside walls of the lime turn off ) the three water valves which in most cases are.. Heater results in a very sensitive piece of machinery and require you to maintain a tankless heater. To keep hot water tap in the sink or shower where trusted and... Can not clean it regularly the main supply to your fixture to do this even if I a. Will want to make all of wikihow available for free every tankless heaters... Heated water from flowing into the water valves and turn the power source be checked periodically for debris and.... All authors for creating a page that has been read 199,790 times volunteer authors worked edit. Pay attention to proper installation source of power the water. `` vinegar next time rubber sealing discs located the.