Periodic Maintenance of a Tankless
There areonly a few things that need to be maintained on a tankless water heater. If these steps are preformed regularly you can expect your unit to last much longer (20 plus years) than a conventional tank type water heater.
First there is a inline screen filter that is installed to insure that incoming water is clean and free of debris before running through the heat exchanger. This little filter should be checked every so often, (dependent on water quality) and is a circular mesh screen. Incoming water needs to be shut off and then the screen can be cleaned.
Secondly a tankless needs to be flushed to remove calcium and scale build up in the heat exchanger. If your tankless was installed by a reputable company they will have included a pair of flush valves which make this process quite easy. It’s probably best this be done by your installer but here is a brief rundown of what occurs. Water and gas are shut off and the unit is drained. Then two hoses and a small pump are hooked up to the flush valves and fresh vinegar is pumped through the systems heat exchanger for roughly 30 minutes. This cleans out all the buildup and scale that severely reduces a water heaters efficiency.
Those are basically the two things that a tankless owner needs to perform to ensure maximum efficiency and a prolonged lifespan. Barrie through to Toronto and basically all of southern Ontario have significant concentrations of limestone and thus relatively hard water conditions. A conventional tank can’t be cleaned whereas a tankless can and hot water accelerates the rate of scale deposits.