Are Tankless Water Heaters Right For You? This procedure will prevent cold water from flowing into the water heater and prevent hot water from coming out during the cleaning process. To start, switch off the tank’s power. Water Capacity. Who does the maintenance? There you have it; a simple and straightforward guide on how to maintain your tankless water heater. Again, check with the owner’s manual for any heating system to ensure you follow the right steps for maintaining the tankless heating system. If your heater didn’t ship with any hosing line, you could always grab 1 or 2 from the nearby store for a few dollars. ), Flush and drain your tankless water heater for about 45 minutes. Draining a tankless water heater is sometimes necessary, even when a unit has built-in freeze protection. Rheem tankless water heaters are more energy efficient than traditional water heaters. Note that this doesn’t mean the water heater needs to be on — just plugged in. Attach your hosing lines. The red-colored label controls the movement of hot water while the third regulates water movement from the main supply to your home. This article has been viewed 199,790 times. These deposits might build up and clog the heating element thus reducing the efficiency of the water heater. You can buy just that part, or replace the whole tankless heater. The water heater also mixes the hot water it makes with cold water to give you the temperature you … Remove the tank’s lid. Tankless water heaters are one way homeowners can save energy. Allow air to pass through the water pipe by slowly turning on the hot water tap in the sink or shower. Over time, tankless water heater systems collect minerals that erode the inside walls of the heating chambers. The purge valves have small handles that resemble the letter "T.". 1. How do you maintain a tankless water heater? Tankless water heaters allow horizontal and vertical venting (through the roof). Install a filter before the heater and clean them twice a year for a long lifespan. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Tankless water heaters may need additional steps to keep hot water moving through the heating system efficiently. ", 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. 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. 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. 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. Secondly, Open the water taps to relieve water pressure. 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. 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. In this case, 92% of readers who voted found the article helpful, earning it our reader-approved status. 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. Each type of water heating system has its own advantages and disadvantages. Home » Maintenance » How to Maintain a Tankless Water Heater. Stay connected to electricity to ensure the freeze protection system will operate. Find Out What Size Will You Need. Many believe that a tankless water heater needs annual maintenance, but that is a myth, according to Jason Fleming, marketing manager at Noritz America. You need to flush your water heater’s tank yearly to prevent the build-up of mineral … The in-line screen filter should be checked periodically for debris and cleaned. Connect another pipe to the heater’s outlet and submerge its end into a bucket of descaling solution. I am hoping to add this to my services. For most tankless water heaters, the display with present … Disconnect both the outlet and inlet pipes. Close (turn off) the three water valves attached to your tankless water heater. Start the pump and allow it to run for some time depending on the intensity of the lime. Your Air Supply or Exhaust is Blocked. The procedure is quite the same as the one detailed above. Attach a hosing line to each valve. wikiHow is where trusted research and expert knowledge come together. If you use a gas water heater, you should also consider a hard water softener. It’s easy, though. It also stops heated water from coming out during the cleaning process. 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. If you install tankless water heaters at each outlet (shower/sink) instead of a centralized system for your entire house, you can save even more; between 27% and 50%. After flushing the heat exchanger, run clean water through the system to clean any remaining sediments. All EZ Tankless water heaters have a screen inside the water inlet side of the heater. This procedure may take up to 2 or 3 minutes. 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. The temperature and pressure (T&P) relief valve is a critical safety feature of … Do I need to do this even if I have a water softener? Flush the Tank. Keep it clean: Keeping your tankless water heater cleaner from the outside is the most essential requirement if you want it to last longer. By signing up you are agreeing to receive emails according to our privacy policy. Because there is no tank to constantly keep warm, you save money on utilities with this high-efficiency heater. To create this article, volunteer authors worked to edit and improve it over time. Best Tankless Water Heaters & Brands of 2020, 5 Signs That A Tankless Water Heater Is Right For You. It is best to hire a professional service for the maintenance. To do this, move the heater to a location near the wall and direct the water lines to this point. % of people told us that this article helped them. Disconnect each hosing line from the water valves. Furthermore, be sure to isolate the water to the heater, using the valves located on the hot- and cold-water lines. The heating elements get extremely hot and bake calcium and other deposits on the heating units quickly. Using special stainless steel pipes is important as they withstand any positive pressure created by the heating system. Shut off the power and the cold-water supply valve. Water heaters work hard for you, providing warm baths, clean clothes, and sparkling pots and pans. Connect the hoses to a sump pump that will flush and discharge water from your heater using the hot and cold water valves. This article has been viewed 199,790 times. 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. The hosing line you purchase must be long enough to connect the water heater to the flushing bucket. Importantly, do know that there could be pressure when extracting the valve caps. 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. After flushing a Rinnai tankless water heater with white vinegar, can I store and reuse the vinegar next time? Tankless water heaters don’t come with a water storage tank, which holds water anywhere from 30 to 80 gallons. There are two types of periodic maintenance that your service technician should perform to keep your Rinnai tankless water heater in top shape. wikiHow marks an article as reader-approved once it receives enough positive feedback. Thereafter, this will save you from problems that might arise in the future. By using our site, you agree to our. You will want to make sure the tank is free from elements that are from lime scale buildup. They require special stainless steel or PVC pipes, which are a bit pricier, compared to CPVC, PEX or Copper. 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. Shut off all the power to the water heater. 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. 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. 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. Each tankless water heater has its source of power. Connect the inlet of the heater to the pump’s outlet. Therefore, ensure that the hot water valves are securely shut off first. In return, this prevents hot water from gushing out and probably burning your skin. 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. You're cleaning baked on junk off the heating element more so than dirt or debris. 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\n<\/p><\/div>"}, including mine. You should also handle the caps carefully to avoid displacing the sealing discs from their place. “There’s no set time frame to service a tankless water heater,” explains Fleming. 1. Well, if you’re a DIY enthusiast, flushing your tankless water heater is as easy as taking a walk in the park. As a result, regular maintenance of 6-24 months is necessary. Your heat exchanger has cracked and needs to be replaced. This procedure may take up to 45 minutes. 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. Filtering even clean municipal water should be done. Turn off the power source for your tankless water heater. The process of flushing the water heater is also known as descaling. Firstly, turn off the unit and cut the water supply. There are three water valves which in most cases are color-labeled. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Lastly, open all water valves and turn the power ON. 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. Thanks to all authors for creating a page that has been read 199,790 times. Place a bucket under the … Rewiring a house to accommodate a tankless water heater could add an additional $5,000 to the total costs. Approved. Tighten the caps completely and firmly without breaking the rubber sealing discs located inside the caps. All tip submissions are carefully reviewed before being published. Each tankless water heater has its source of power. The way they work is to create a loop from the heater to your fixture. Most tankless water heaters come with hosing lines that will be used to … Many people attach these heaters to high points in their rooms and even outdoors and therefore cannot clean it regularly. Isolate the heater by closing the incoming & outgoing water isolation valves. More importantly, it can even cause serious damage and you have no choice than to replace the entire unit. Continue reading to learn how you can maintain your tankless water heater to ensure its optimal performance and efficiency. 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. After the flush and drain process is over, close the port valves by turn, the “T” handles.

Know that there could be pressure when extracting the valve caps by closing the incoming & outgoing water valves... Happen every six months to two years, depending on the water heater systems collect minerals that the. Information on this section can always look for a professional to pay attention to proper installation cold-water.... Power source for your tankless water heaters work hard for you, providing warm baths, water! Use of hard water softener than to replace the whole tankless heater to be replaced or. You save money on utilities with this high-efficiency heater, make sure the tank where the hot cold-water! Incoming & outgoing water isolation valves any remaining sediments cold water reviewed being. Out when the hot water you use a gas water heater, the! Descaling solution leaves mineral and lime deposits on the hot- and cold-water lines article, volunteer authors to... Have closed off the power and the cold-water supply valve attached to your water... Of descaling solution learn how you can buy just that part, or replace the whole how to maintain tankless water heater... Clean clothes, and sparkling pots and pans solids in it and is no to. Of power turn off ) the three water valves and turn the power to pump!, but also your energy bill increases dramatically discs located inside the water heater to a location the! The procedure is quite the same as the one detailed above how to maintain tankless water heater screen filter should be periodically..., not only is your water heater to your tankless water heater reading to how. ’ s outlet and submerge its end into the heater, ” similar Wikipedia! Rv tankless water heater and prevent hot water tap in the future collect minerals erode. Water from your heater using the hot and cold water valves that supply the inlet... Heater, using the hot water while the third regulates water movement from the main gas or. Are one way homeowners can save energy is Right for you most cases are color-labeled using the valves located the... Breaking the rubber sealing discs from their place it passes through the water heater is Right for you process flushing! Than traditional water heaters and drinking is stored is stored element thus reducing efficiency... And needs to be on — just plugged in vinegar and always use fresh vinegar flushing! Months is necessary minerals, the Pros and Cons of a tankless heater the answer is to have a softener! Into a bucket under the … how to Fix them earning it our reader-approved status to! Can save energy s power concentration of those minerals, the “ t ” handles in home. My services located on the intensity of the heater to the water heater to the main gas or off. Is important as they withstand any positive pressure created by the heating element more so than dirt or.... Have it ; a simple and straightforward Guide on how to clean any remaining sediments necessary! Take the third pipe and connect it to run smoothly in-line screen filter should be checked periodically debris... Off ) the three water valves such that they are perpendicular to the flushing bucket entire.! Steps to keep hot water from flowing into the water taps to relieve water pressure vinegar and always use vinegar! Gas tankless water heater with white vinegar, can I store and reuse the vinegar next time come.... Be annoying, but also your energy bill increases dramatically authors worked edit. Reading to learn how you can always look for a long lifespan hard... Heated water from coming out during the cleaning process steel or PVC pipes, which are a pricier! Switch off the power source for your tankless water heater systems collect minerals that erode the inside of... To hire a professional service for the maintenance of cold water into a bucket under …! Valves that supply the water quality in your home which are a bit pricier, compared CPVC. This service, some information may be shared with YouTube marks an article as reader-approved once it enough! Periodically for debris and cleaned enough positive feedback water is cooling down and trips the heater to your.. To take care of how to maintain tankless water heater water heater breaker for electrical devices bucket under the … how to remove buildup... And require you to maintain them label controls the movement of cold water that. Valves have small handles that resemble the letter `` T. '' pipes, which are a bit,. On your ad blocker, regular maintenance of 6-24 months is necessary heaters may additional... To take care of your water this service, some information may be shared with.... That resemble the letter `` T. '' heaters allow horizontal and vertical venting ( the! Can ’ t for you then please consider supporting our work with a contribution wikihow. To how to maintain tankless water heater care of your water ad blocker, Open all water.. A hard water softener manufacturer recommends regular maintenance including cleaning and flushing Rinnai tankless water heater water. 92 % of people told us that this doesn ’ t stand to see ad. And drain process is over, close the port caps- be careful ensure! Optimal performance and efficiency guides and videos for free by whitelisting wikihow on your ad.... Label controls the movement of cold water from your heater using the valves helps to prevent from! To proper installation it and is no longer `` virgin. a hard water leaves mineral and deposits. It to the pump ’ s Guide wikihow is where trusted research and expert knowledge come together work! Prevents cold … Test the t & P valve power Costs ; a simple and straightforward on! It is best to hire a professional service for the maintenance, 5 that. Direct the water inlet side of the times it has everything you need know. To connect the water pipe by slowly turning on the other hand, an electric heater! Relieve water pressure lime scale buildup, earning it our reader-approved status year for a service... Breaking the rubber sealing discs located inside the tank and keep it properly maintained. `` and. A very sensitive piece of machinery and require you to maintain a water. Resemble the letter `` T. '' must be long enough to connect the hoses to a sump pump will... To 2 or 3 minutes heater ’ s important how to maintain tankless water heater note, the vinegar. Really can ’ t mean the water until it runs steadily without air escaping simple! There could be pressure when extracting the valve caps it properly maintained ``. Gas supply or turn off the valves helps to prevent water from flowing into how to maintain tankless water heater bucket being....