Annual Water Heater Maintenance Checklist Drain and Flush Tank Drain and ush tank very important for gas water heaters . Turn o cold water.I’ve been on a plumbing DIY kick lately, and after recently replacing a water recirculating pump that had been installed incorrectly upside down! by a professional plumber, I’ve been reminded that it’s never a bad idea to periodi.y test things inside your own house even if they were installed by a.Water Boiler Expansion Tanks HVAC Hydronics There are two types of expansion tanks used on water boiler systems. The steel expansion tank and the.HydraStone Inc. specializes in tank lining tank maintenance for potable water tanks industrial storage tanks. Contact us today for more information..
Flush the Tank. Turn off the electricity to the water heater or turn off the gas to extinguish the pilot. Connect a garden hose to the tank s drain valve. With the pressure relief valve open, open the drain valve and allow the tank to drain completely..Drain the Tank and Wash Out Sediment. Drain the remaining water in the tank into the bucket, then stir up the sediment on the tank s bottom by briefly opening the cold water supply valve. Drain and repeat until clean water comes out of the hose. Close the drain, refill the tank, and turn its power back on..Extend the life of your water heater tank and maintain your water heater s efficiency and safety with a few minutes of water heater maintenance once a year . To restart the water heater, open the shutoff valve and let the water run at any faucet to purge air from the system. Then turn on the power or relight the pilot ..