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These are the most common issues our technicians find and correct during professional gas pool heater service visits.

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Pool Heater Slow or Weak at Startup

An igniter that is aging loses its ability to produce a consistent spark, causing delayed or multi-attempt ignition that stresses the gas valve and burner assembly. Left unaddressed, it eventually produces no-start failures at the worst possible time. During service, we test igniter output and replace components that are showing degraded performance before a full failure occurs.

Pool Heater Pilot Dropping Out

A thermocouple that is weakening will still light the heater for a while before causing intermittent shutoffs during operation. This is the most common cause of unreliable pool heater behaviour and is almost always missed without direct voltage measurement. We test thermocouple output at every service visit and replace low-reading sensors before they cause a mid-season breakdown.

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Pool Not Reaching Temperature Despite Heater Running

Minerals from pool water accumulate inside the copper heat exchanger tubes over time, restricting flow and reducing heat transfer efficiency. The heater runs longer to achieve the same temperature, consuming more gas and stressing the tube walls. We inspect the heat exchanger headers during every service visit and advise on cleaning when scale is present at a level that affects performance.

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Pool Heater Burner Not Burning Evenly

Insects, leaves, and seasonal debris accumulate in the burner compartment during periods when the heater is inactive. A dirty burner produces an uneven flame that concentrates heat on specific heat exchanger tubes, accelerating localized wear. We remove and clean the burner tray as part of every service visit to restore even combustion across the full heating surface.

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Pool Heater Wiring Connections Corroded

Pool environments are humid, and the wiring connections inside an outdoor heater's control enclosure are exposed to moisture and temperature cycling year after year. Corroded terminals cause intermittent electrical faults that are frustrating to diagnose once the season is underway. We inspect all internal connections during service and address corrosion before it develops into a control board or sensor fault.

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Pool Heater Safety Controls Not Working

Pressure switches, high-limit sensors, and flow switches are designed to shut the heater down when unsafe conditions are detected, but they can fail in a way that either prevents normal operation or allows the heater to run unsafely. Annual testing confirms each safety component responds within the manufacturer's specified parameters. We test all safety interlocks during every service visit.

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Pool Heater Not Holding the Right Temperature

A thermostat that has drifted from its calibrated setpoint causes the heater to cycle at the wrong temperature, either overheating the pool or shutting off before the target temperature is reached. We verify thermostat accuracy during service by comparing the setpoint to actual measured water temperature and adjusting calibration where needed.

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Pool Heater Won't Start After Winter

A heater that shut down normally in the fall but will not restart in spring has often been affected by freeze damage, condensation reaching electrical connections, or a control board that failed during storage. This is one of the most common calls we receive at the start of pool season. We inspect the full system at startup, identify what failed over winter, and get the heater running before the season is underway.

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Gas Smell Near the Pool Heater

A gas odour near any pool heater is a safety concern that should be treated immediately. The source may be a loose fitting on the gas connection, a corroded union, or a gas valve not fully closing when the heater is off. Do not attempt to operate the heater or locate the leak yourself. Our licensed technicians carry detection equipment to identify the source safely and make the repair with all required leak testing completed before leaving.

Reviews

What Our Customers Say

★★★★★

No surprises all summer

We booked a spring service visit for the first time this year and our heater ran flawlessly the entire season. Gas Services Edmonton explained everything they checked and gave us a written summary. Worth every bit of the appointment.

★★★★★

Caught a gas connection issue early

The technician found a fitting that had loosened slightly during the pressure test, something we never would have noticed. Fixed it right there and our heater has been perfectly reliable since. Glad we scheduled service before opening the pool.

★★★★☆

Thorough visit, took a bit longer than expected

Our heater is older so the technician spent extra time checking the heat exchanger and gas valve response. Took closer to ninety minutes instead of the usual hour but the extra attention made sense given the age of the unit.

★★★★★

Noticed lower gas bills after service

Gas Services Edmonton cleaned the burner and adjusted the combustion during our visit and I actually noticed a difference in our gas usage afterward. Did not expect a maintenance visit to save us money too.

★★★★★

Professional and honest

The technician found a worn igniter that was not urgent yet but explained it would likely need replacing soon. No pressure to fix it that day, just clear information so we could plan ahead. Really appreciated the honesty.

★★★★★

Quick, clean, exactly as described

Straightforward appointment, technician checked everything and confirmed our heater was in good shape. Gas Services Edmonton sent a written summary the same day. Booking again next spring without a second thought.

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From gas furnaces and fireplaces to pool heaters and tankless water heaters, our certified technicians keep your home safe, warm, and running right.

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