Signs your tankless needs descaling
- Hot water temperature swings during a shower
- Lower hot water flow than when the unit was new
- Scale or limescale warnings, or error codes on the display
- A whistling or rumbling sound while the burner runs
How descaling works
With the gas and power off, we close the isolation valves and connect a small pump and hoses to the service ports. A food-safe descaling solution circulates through the heat exchanger for around an hour, dissolving mineral build-up. Then the unit is flushed with clean water, the inlet filter screen is cleaned, and the heater is restarted and tested.
- Shut off gas, power and water to the unit.
- Circulate the descaling solution through the service valves.
- Flush, clean the inlet screen and check for leaks.
- Restart, clear any codes and check temperature at the taps.
How often in Brampton
With Peel's moderately hard water, plan on a yearly descale to begin with. Households with a water softener can often stretch it longer. If your tankless was installed without service valves, we can add them during the first visit so later descaling is quicker.
Tools, access and testing
| Tools we bring | Combustion analyser, manometer, pipe wrenches, torch |
|---|---|
| What we open | Burner door, flue collar, drain valve, anode port |
| What we test | Gas pressure, draft at the hood, T&P valve, temperature |
Where in Brampton we do this
We take tankless descaling calls right across the city, including Fletcher's Creek South, Bramalea, Vales of Castlemore, Gore Meadows and the streets around them.
Questions we get
Can I do it myself?
If your unit has service valves and you are comfortable with gas and electrical shut-offs, a kit can do it. Many owners prefer to have it done along with a burner and venting check.