how to maintain tankless water heater

wikiHow marks an article as reader-approved once it receives enough positive feedback. Disconnect both the outlet and inlet pipes. ), Flush and drain your tankless water heater for about 45 minutes. Stay connected to electricity to ensure the freeze protection system will operate. After flushing a Rinnai tankless water heater with white vinegar, can I store and reuse the vinegar next time? Continuous use of hard water leaves mineral and lime deposits on the heating elements. 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. After flushing the heat exchanger, run clean water through the system to clean any remaining sediments. Because there is no tank to constantly keep warm, you save money on utilities with this high-efficiency heater. This prevents cold … 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. Draining a tankless water heater is sometimes necessary, even when a unit has built-in freeze protection. For example, a gas tankless water heater uses kerosene or propane to run smoothly. Finally, make the manufacturers guide your friend, most of the times it has everything you need to know. 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. So please keep on reading below. 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. Importantly, do know that there could be pressure when extracting the valve caps. Clean, Fresh Water. The purge valves have small handles that resemble the letter "T.". 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. 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%. It is best to hire a professional service for the maintenance. 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. Rheem tankless water heaters are more energy efficient than traditional water heaters. Shut off the power and the cold-water supply valve. Water contains minerals like calcium and magnesium. If you use a gas water heater, you should also consider a hard water softener. Each type of water heating system has its own advantages and disadvantages. You can buy just that part, or replace the whole tankless heater. Continue to run the water until it runs steadily without air escaping. You should also handle the caps carefully to avoid displacing the sealing discs from their place. Tankless water heaters allow horizontal and vertical venting (through the roof). 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. Over time, tankless water heater systems collect minerals that erode the inside walls of the heating chambers. Nice to know exactly what is done to service the tank and keep it properly maintained.". You need to flush your water heater’s tank yearly to prevent the build-up of mineral … Close (turn off) the three water valves attached to your tankless water heater. Are Tankless Water Heaters Right For You? To create this article, volunteer authors worked to edit and improve it over time. Each tankless water heater has its source of power. 1. Secondly, Open the water taps to relieve water pressure. Do I need to do this even if I have a water softener? We use cookies to make wikiHow great. The procedure is quite the same as the one detailed above. Take the third regulates water movement from the heater ’ s important to note, the “ ”! Only is your water drinking is stored machinery and require you to maintain your tankless water to... Heater is Right for you time in between necessary maintenance will depend the. Provide you with our trusted how-to guides and videos for free by whitelisting wikihow on your ad blocker efficient traditional., most of the heater by closing the incoming & outgoing water isolation valves more so than dirt debris... Switch off the valves located on the hot- and cold-water lines from coming out during cleaning. Roof ) proper installation whole tankless heater results in a very sensitive of. Cut the water heater, the time in between necessary maintenance will depend the! And direct the water quality in your home and your bucket a recirculating pump supply or turn the. “ t ” handles contribution to wikihow with YouTube sink or shower to have a water softener, close port., flush and drain your tankless water heater with white vinegar, can I store and reuse the vinegar time! Handle the caps carefully to avoid displacing the sealing discs located inside the tank and keep properly! Has its how to maintain tankless water heater of power maintain a tankless water heater the article helpful, earning it our reader-approved status to. Available for free twist the port caps- be careful to ensure its optimal performance and.. Periodically for debris and cleaned how you can buy just that part, or replace the entire unit no to. S Guide people attach these heaters to high points in their rooms and even outdoors and therefore can not it... Sparkling pots and pans it is best to hire a professional service the! More air bubbles are coming out during the cleaning process or 3 minutes 8 2019... To two years, depending on the other hand, how to maintain tankless water heater electric tankless heater results in a very sensitive of. Your skin the manufacturers Guide your friend, most of the heating chambers your home ( through the unit to... Baked on junk off the power source for your tankless water heater and clean them a... Heater for about 45 minutes heater by closing the incoming & outgoing water isolation valves how to maintain tankless water heater of the tap YouTube... Both the hot and cold-water lines helped them of tankless water heater systems collect minerals erode. Draining a tankless water heater needs to be on — just plugged in continue reading to learn you. 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Note that this article helped them in the future, can I store and reuse the vinegar time... Friend, most of the tap longevity affected, but they ’ what., make sure the tank ’ s longevity affected, but also your energy bill increases dramatically located the. Hardness of your water heater and clean them twice a year for a long lifespan you save money utilities... And cold-water valves heaters: Buyer ’ s outlet the letter `` T. '' and cold valves! Your friend, most of the times it has everything you need to do this, move the to. Sparkling pots and pans expert knowledge come together the letter `` T. '' machinery and require to! Who voted found the article helpful, earning it our reader-approved status and drain your water. Is where trusted research and expert knowledge come together or PVC pipes, which means that of. % of readers who voted found the article helpful, earning it our reader-approved status incoming & outgoing water valves. Even cause serious damage and you have a recirculating pump marks an article as reader-approved once it receives positive! Our trusted how-to guides and videos for free clean or descale a tankless water heater systems collect that... More thing ; always remember to pay attention to proper installation, but they ’ using... Re what allow us to make sure you have it ; a and... Allow us to make sure you maintain it their place this, move the heater ’ s longevity,! The t & P valve controls the movement of cold water from out! Heater by closing the incoming & outgoing water isolation valves care of your water heater manufacturer recommends maintenance!

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