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POOL HEATER REPAIR

Pool Heater Repair Toronto & GTA

Swimpool 360 diagnoses and repairs all types of pool heaters across Toronto and the GTA. Gas heaters, heat pumps, and solar heating systems. Ignition failures, heat exchanger issues, thermostat faults, pressure switches, and refrigerant problems - our technicians fix them all. Fast response across the GTA.

Pool heater repair technician diagnosing gas pool heater in Toronto GTA
HEATER TYPES WE SERVICE

Pool Heater Repair: Gas, Heat Pump & Solar Systems

Swimpool 360 repairs all three main types of pool heating systems used by GTA homeowners. Pool heater repair covers gas heaters (natural gas and propane), which are the most common and can fail due to ignition component failures, heat exchanger scaling from high calcium water, gas valve faults, thermostat calibration drift, and pressure switch failures. We carry common gas heater parts and can complete most repairs in a single visit. Our full pool repair services cover all equipment types across the GTA.

Heat pump pool heaters are increasingly popular for their efficiency. Typical pool heat pump repair Toronto calls involve refrigerant charge loss, compressor faults, frozen evaporator coils, fan motor failures, and control board issues. Solar pool heater repairs involve manifold leaks, collector tube blockages, sensor failures, and control valve issues. As a trusted pool heater GTA service provider, Swimpool 360 handles all three heater types across the region.

Pool heater types repaired in Toronto GTA - gas, heat pump, solar
HEATER REPAIR TYPES

Pool Heater Repairs We Diagnose and Fix

Ignition System Repair

Gas heater igniter assembly failures, thermocouple replacement, pilot assembly service, and electronic ignition board diagnosis. The most common gas heater fault resolved quickly with the right parts.

Heat Exchanger Descaling

Calcium scale accumulation inside the heat exchanger reduces heat transfer efficiency and can eventually crack the exchanger. Descaling with acid flush restores heat output and extends heater life significantly.

Thermostat and Sensor Service

Thermostat recalibration, temperature sensor replacement, and high-limit sensor service. A faulty sensor can cause the heater to under-heat, overheat, or cycle off prematurely. Often resolved in a single visit.

Gas Valve Repair

Gas valve failure prevents the heater from receiving adequate fuel. We diagnose and replace faulty gas valves on natural gas and propane heater models. All gas work performed by qualified technicians.

Heat Pump Service

Heat pump pool heater service including refrigerant charge verification, compressor testing, evaporator coil cleaning, fan motor inspection, and control board diagnosis. All heat pump brands serviced.

Annual Heater Inspection

Spring heater reconnection and inspection at pool opening. Burner inspection, heat exchanger check, all connections verified, control panel test, and run test to verify the heater reaches set temperature before the season starts.

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Pool Heater Not Heating? Call Swimpool 360

Fast pool heater diagnostics and repair across Toronto and the GTA. All brands, all heater types. We'll get your pool warm again.

PREVENTING HEATER DAMAGE

Why Pool Water Chemistry Destroys Heater Heat Exchangers

For any swimming pool heater repair Toronto homeowners need, the heat exchanger is the most expensive component and the part most often damaged by poor water chemistry. A heat exchanger in a gas heater exposes pool water to high temperatures that accelerate the effects of any chemical imbalances. When pH is chronically high (above 7.8), calcium in the water precipitates and forms calcium scale on the heat exchanger walls. This scale acts as insulation, forcing the heater to burn more fuel to achieve the same heating output, eventually causing the heat exchanger to overheat and crack. When pH is chronically low (below 7.2), the water is mildly acidic and corrodes the heat exchanger metal directly, causing pinhole leaks and premature failure.

Heat exchanger replacement typically costs $800 to $1,500 for a gas heater and is usually not economical for a heater over 10 years old. The single best way to protect your heater investment is consistent water chemistry maintenance, which is exactly what Swimpool 360's weekly pool maintenance plan provides. Clients on maintenance plans rarely face heat exchanger failures from chemistry damage. For pools with naturally hard water in the GTA, we also recommend a phosphate remover and a regular scale inhibitor as part of the chemical program.

Pool heater heat exchanger damage from poor water chemistry in Toronto GTA
HEATER REPLACEMENT GUIDE

Pool Heater Replacement: Gas vs Heat Pump in the GTA

When a pool heater reaches end of life or suffers an uneconomical failure, GTA pool owners face a choice between replacing with a gas heater or upgrading to a heat pump. The right answer depends on how the pool is used. For gas pool heater repair Ontario or replacement, gas models heat pool water quickly regardless of outdoor temperature and are ideal for pools used occasionally, for heating spas, or for heating pools in the shoulder season when air temperatures are below 10 degrees Celsius. A 200,000 BTU gas heater can raise a typical 60,000-litre pool by 10 degrees in 6 to 8 hours.

Heat pump pool heaters extract heat from outdoor air using a refrigerant cycle. When air temperatures are above 15 degrees Celsius, a quality heat pump achieves a coefficient of performance (COP) of 5 to 7, meaning it produces 5 to 7 units of heat for every unit of electricity consumed. For pools that run continuously through the GTA swim season from May through September, a heat pump can reduce heating costs by 50 to 75 percent compared to a gas heater. Swimpool 360 installs and services both heater types across the GTA. Our team can assess your pool usage, gas rates, and electrical service to help you make the right replacement decision. For full repair details on other equipment, visit our complete pool repair services page, or explore our pool pump and filter repair options.

Pool heater replacement - gas heater vs heat pump comparison for Toronto GTA pools

Get Your Pool Heater Back in Service

Pool heater repair and replacement across Toronto and the GTA. Gas, heat pump, and solar systems. Fast response, all brands.

FAQ

Pool Heater Repair FAQs

Why is my pool heater not heating?
Common reasons a pool heater won't heat include: ignition failure (gas heaters - often a dirty or faulty igniter, thermocouple, or gas valve), heat exchanger scaling reducing heat transfer efficiency, thermostat calibration or sensor failure, low or high pressure safety switches tripping, flow rate problems preventing heater activation, and for heat pumps, refrigerant loss or compressor issues. Swimpool 360 diagnoses the specific cause before any repair work begins.
How much does pool heater repair cost in the GTA?
Pool heater repair costs in the Toronto GTA area vary by fault type. A thermostat recalibration or cleaning visit typically costs $150-$250. Igniter or thermocouple replacement costs $200-$400. Heat exchanger descaling costs $200-$350. Gas valve or control board replacement costs $400-$700+. Heat pump refrigerant recharge costs $400-$600+. We quote all repair costs after diagnosis and before any repair work is started.
How long does a pool heater last?
Gas pool heaters typically last 10-15 years with proper maintenance. Heat pump pool heaters typically last 10-20 years. The biggest factor in heater longevity is water chemistry - high pH or calcium levels accelerate heat exchanger corrosion and scale buildup. Annual maintenance, including a heat exchanger cleaning and inspection, significantly extends heater life. Swimpool 360 recommends an annual service visit in spring when the heater is reconnected after winter.
Is it worth repairing an old pool heater?
A pool heater under 10 years old is generally worth repairing unless the heat exchanger has failed (which typically means replacement is more cost-effective). Heaters 10-15 years old warrant an honest cost-benefit assessment - if the repair cost approaches 40-50% of a new heater installation, replacement often makes more sense given the improvement in efficiency. Swimpool 360 gives you this analysis before recommending either option.
Why does my pool heater keep shutting off?
A pool heater that cycles on and frequently shuts off is typically responding to a safety fault. Common causes include: insufficient water flow through the heater from a dirty filter or low pump speed, high limit or pressure switch triggering from scale buildup in the heat exchanger, a loose or corroded thermostat sensor, or on gas heaters, a failing gas valve that cannot maintain adequate pressure. Our technicians diagnose the specific fault on the first visit.
What is the difference between a gas pool heater and a heat pump?
A gas pool heater burns natural gas or propane to heat pool water directly through a heat exchanger. It heats water quickly regardless of air temperature and is the best choice for pools used occasionally or for heating to high temperatures. A heat pump pool heater extracts heat from outdoor air using a refrigerant cycle. Heat pumps are highly efficient when air temperatures are above 10-15C but heat slowly. For continuous seasonal heating in the GTA, heat pumps offer lower operating costs; gas heaters offer faster heat-up and shoulder-season performance.

Get Your Pool Heater Fixed Today

Pool heater repair across the GTA. All brands and all heater types. Fast response, honest pricing.

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Describe your heater problem and we'll schedule a diagnostic visit. We respond within 24 hours across all GTA communities.

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