How do I descale my on demand hot water heater?
Consequently, how do you clean an on demand hot water heater?
Open the purge port valves by twisting them perpendicularly to the position of the cold and hot valves. Use 2.5 gallons (9.46 liters) of undiluted white vinegar to clean your tankless water heater at all times instead of chemical solutions.
In respect to this, how much does it cost to descale a tankless water heater?
Since rates vary wildly, I can't put an exact number on it, but expect to pay between $100 and $200 to service your tankless. This should include the descaling, cleaning of the filter and possibly replacing it, and doing any diagnostics of the tankless water heater system to make sure it is running properly.
Mineral deposits may build up. This could cause a clog within the unit and may prevent normal heating activity. Your hot water could also fluctuate and overheat the system, impacting its efficiency.