Same-day and emergency appointments
Up-front pricing before any work starts
Licensed, insured, background-checked technicians
Written safety report after every visit
Toronto & the GTA
Pool Heater Repair in Toronto & the GTA
Gas and heat pump pool heaters diagnosed, repaired and pressure-tested.
A short Ontario swimming season means a broken pool heater costs you weeks, not days. Most failures fall into three groups: water flow problems the heater reports as its own fault, ignition and gas train faults, and heat exchanger corrosion from unbalanced water chemistry.
(647) 000-0000Book Pool Heater Repair
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Overview
How we approach pool heater repair
We always test water flow and pressure before condemning a component. Pool heaters are unusually good at reporting a downstream problem — a dirty filter, a closed valve, a failing pump — as an internal error code, and replacing the part the code points at will not fix a flow issue.
Chemistry matters more than any other single factor in pool heater lifespan. Low pH quietly eats copper heat exchangers from the inside. When we find corrosion we tell you what the water is doing so the replacement part does not fail the same way.
Pool heaters fail for reasons that start outside the heater. Low flow from a dirty filter or a partially closed valve trips the pressure switch; poor water chemistry corrodes the heat exchanger from inside; and a bypass left in the wrong position sends most of the flow past the heater entirely. We check the circulation and chemistry side before condemning anything on the appliance.
Rodent damage is the other one nobody expects. A heater that sits idle from September to May is a warm, sheltered box, and mice will nest in it and chew the wiring harness over the winter. Opening and inspecting the cabinet at start-up — rather than simply switching it on and hoping — is the difference between a $200 service and a burned-out control board in June.
When to book
Book the opening service in May, before the queue builds. Closing-season attention in September prevents most of the faults that appear the following spring.
What drives the price
Ignition and pressure-switch faults are quick; heat exchanger corrosion, control boards and gas valve replacement on older units are the expensive outcomes.
Call now, or book it in?
Call now
- Any gas smell around the equipment pad
- Water leaking from the heater body
- Scorching or soot marks on the cabinet
Can be scheduled
- Heater will not fire on demand
- Pool heating far more slowly than usual
- Error codes on start-up
- No service since last season
Our process
- 1Water side firstFilter, pump, valves, flow rate and pressure switch tested before any gas-side work.
- 2Read the code properlyManufacturer diagnostics rather than a guess at what the code means.
- 3Gas & ignition testGas pressure, igniter, flame sense and the full safety chain.
- 4Quote & repairWritten price, then the repair, with chemistry advice if corrosion is involved.
- 5Run & verifyFull heat cycle with a temperature rise measurement across the heater.
What affects the cost
- Ignition and sensor faults are the cheapest and most common
- Heat exchanger replacement is the most expensive gas-side repair
- Heat pump compressor and refrigerant work costs more than gas-side repairs
- Parts availability for heaters over about 12 years old
- Whether the pool plumbing needs modification to restore proper flow
FAQ
Pool Heater Repair questions
Why does my pool heater shut off after a few minutes?
Most often insufficient water flow tripping the pressure switch — a dirty filter, a partly closed valve or a tiring pump. It can also be a high-limit trip or a failing flame sensor. Flow is checked first because it is both the most common cause and the cheapest to fix.
How long should a pool heater last?
Eight to twelve years for a gas heater in Ontario, longer for a well-maintained heat pump. Water chemistry is the single biggest factor: consistently low pH can halve the life of a copper heat exchanger.
Gas heater or heat pump?
Gas heats faster and works in cold shoulder-season weather, which suits short Ontario seasons and occasional use. A heat pump costs less per hour to run but needs warmer ambient air. For most GTA pools used from May to September, gas is still the more practical choice.
Should I repair or replace a corroded heat exchanger?
On a heater under roughly eight years old, a heat exchanger replacement usually makes sense. Beyond that, the cost approaches a new heater and the remaining components are near the end of their life as well.
Related
Other services we cover
Furnace Repair
No heat? We diagnose and fix gas and electric furnaces the same day.
Air Conditioning Repair
Fast, refrigerant-certified AC diagnosis and repair through the Ontario summer.
Chimney Sweep
Full creosote removal and a camera-verified flue inspection, not just a brush and go.
Chimney Repair
Crowns, caps, liners, flashing and repointing — repairs that stop the water getting in.
Gas Fireplace Repair
Pilot faults, ignition problems, sooted glass and remote issues — fixed by licensed gas technicians.
Duct Cleaning
Full negative-pressure air duct cleaning with before-and-after camera footage.
Dryer Vent Cleaning & Repair
Lint removal, airflow testing and vent line repair — the highest-risk duct in your home.
Furnace Installation & Replacement
Right-sized, correctly vented high-efficiency furnace replacement with a heat-loss calculation.
Emergency Furnace Repair
24/7 no-heat response with stocked ignition, control and blower parts on every truck.
Water Heater Repair & Replacement
Gas and electric tank and tankless diagnosis, repair and replacement — including rental buyouts.
Boiler Repair & Service
Hot water and radiant boiler diagnosis, service and controls work by gas-licensed technicians.
Heat Pump Installation
Cold-climate and hybrid heat pump systems sized and commissioned for Ontario winters.
Gutter & Eavestrough Cleaning
Full eavestrough clear-out, downspout flushing and a flow test before we leave.
Gutter Repair & Installation
Re-pitching, re-hanging, seamless replacement and gutter guard fitting.
Need pool heater repair today?
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