Indoor Pool Heater Repairs in North York

Indoor pool rooms are humid and often contain chemical vapours, which accelerate corrosion on heater parts. Combustion air must come from a safe source.

Indoor pools may also use boilers with heat exchangers, or dehumidifiers that recover heat into the water.

A pool heater only works when water flow, gas supply, ignition and safety switches all line up. The pump must move enough water to close the pressure switch, the gas valve must open, the igniter must light the burner and the flame sensor must prove the flame. If any link fails, the heater locks out and the display shows a code, or nothing at all.

In Ontario the swimming season is short, so pool heaters spend half the year sitting idle under snow. Mice nest in cabinets, spiders build webs in burner tubes and water left in the heat exchanger can freeze and crack it if winterizing was skipped. Many of the calls we see in May are caused by what happened in November.

Heaters also depend on water chemistry. Low pH or high chlorine eats copper heat exchangers from the inside, and scale builds up when calcium is high. We check the heater and look at the bigger picture so the repair lasts.

Igniters, flame sensors, pressure switches, thermistors and gas valves are reasonable repairs on most heaters. A unit under about ten years old with a sound heat exchanger is usually worth fixing.

When a heat exchanger leaks on an older heater, replacement often costs a large share of a new heater and it may be wiser to replace the whole unit. We give you both numbers so the choice is clear.

Book spring startups in April or early May. Heaters that are opened, cleaned and tested before the pool opens rarely surprise their owners on the first warm weekend.