Tankless Water Heater Descaling for Newmarket Homes

Service

Tankless Water Heater Descaling

Category

Water heaters

Where

Newmarket and nearby York Region

Booking

By telephone

Clues that point to tankless water heater descaling

• Water temperature swings during a shower.
• An error code mentioning scale, flow or overheating.
• Lower flow at the hot taps than at the cold ones.
• A year or more since the last flush.

Our method, in order

A tankless heater installed properly has two isolation valves with small service ports. We close the main valves, hook a small pump and hoses to the ports, and pump a descaling solution round the heat exchanger for about an hour. The solution dissolves calcium and magnesium deposits without harming the copper or stainless surfaces.

1. Isolate the heater and shut off its gas and power.
2. Circulate the cleaner, watching its colour as it picks up scale.
3. Flush with fresh water until it runs clear.
4. Clean the inlet filter screen.
5. Check the condensate line and neutralizer on condensing models.
6. Restart, clear the codes and test at a tap.

Newmarket houses and this job

York Region water is hard enough that once a year is sensible for most tankless owners, and homes on private wells north of town may need it more often. A softener cuts the need but does not always remove it entirely.

Some heaters are mounted high in a tight utility room or a garage corner. We bring a short ladder and a container large enough to catch the flush, and we protect flooring before connecting hoses.

Why not just leave it?

Scale makes the burner work harder to deliver the same heat. That raises gas use, stresses the heat exchanger and can void some manufacturer warranties, which often state that damage from scale is not covered. A routine descale is far cheaper than a new exchanger.

Booking a service

Call with the make and model of your heater. If you are considering a water softener as well, we can look at both on the same visit. Learn more about hard water in York Region.