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Most water heater failures trace back to a handful of components. Here are the issues our clients call us about most often and how we fix them.

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Water Heater Pilot Light Won't Stay Lit

A pilot that keeps going out is almost always caused by a worn thermocouple or thermopile, the small sensors that tell the gas valve the pilot flame is active. When these parts degrade, the control system shuts off the gas supply as a safety measure even though the pilot is trying to light. We test both components and replace whichever is causing the signal failure, restoring reliable ignition in most cases during the same visit.

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No Hot Water at All

A complete loss of hot water usually points to a failed pilot, a faulty gas valve, a tripped thermal cutoff, or a control board that has stopped sending operating signals. Each of these causes a different symptom pattern during the diagnostic, which is why guessing at the fix rarely works. We test the full ignition and control path before recommending any replacement parts.

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Water Not Hot Enough

Consistently under-temperature hot water usually comes from a thermostat that has drifted out of calibration, heavy sediment insulating the burner surface, or a gas valve not delivering the correct fuel volume to sustain a full heating cycle. We diagnose which condition applies and correct it, whether that is recalibration, a flush, or a valve replacement.

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Water Heater Leaking at Fittings or Connections

Leaks at the inlet, outlet, or pressure relief valve discharge pipe are usually caused by corrosion at the fittings, a failing valve seat, or a connection that has loosened over years of thermal expansion. These are correctable repairs in most cases. Leaks from the tank body itself are a different situation and typically indicate the tank has failed internally.

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Water Heater Pressure Relief Valve Releasing Water

A pressure relief valve that opens repeatedly is signaling that the unit's operating pressure or temperature is exceeding safe limits. This can happen because of thermal expansion in a closed system, a stuck-open valve seat, or a thermostat running the burner too long per cycle. We do not treat a releasing pressure relief valve as a minor issue, as it is a safety signal that requires a proper diagnosis.

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Gas Smell Near the Water Heater

A gas smell near the water heater should be taken seriously and never ignored or ventilated without also shutting off the gas supply. Common sources include a loose flex connector, a corroded fitting, or a gas valve allowing a small amount of unburned gas to escape. We inspect the full supply path from the shut-off to the burner and correct any leak points found during the visit.

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Rumbling Sound During Water Heater Heating

Loud rumbling or banging during a heating cycle is almost always sediment forcing its way through a compressed layer on the tank floor. The sediment insulates the burner, forces longer run cycles, and accelerates thermal stress on the tank bottom. We flush sediment where flushing can still make a meaningful difference and advise on replacement when the buildup has progressed beyond what a flush can correct.

Water Heater Control Board or Safety Sensor Failure

Modern gas water heaters use electronic control boards and safety sensors to manage operation and shut the unit down if an unsafe condition is detected. When these components fail, the unit may shut off unexpectedly, fail to respond to thermostat inputs, or refuse to ignite at all. We diagnose control board and sensor failures with the correct test equipment and replace only what has actually failed.

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Water Heater Over 10 Years Old

A gas water heater approaching or past the 10 to 12 year mark is entering the period when tank failure, anode depletion, and sediment accumulation all accelerate together. Continuing to repair an aging unit often costs more over two or three years than a proactive replacement. We assess the condition honestly and help homeowners decide whether repair or replacement is the better long-term investment.

Reviews

What Our Customers Say

★★★★★

Found the real cause of our pilot light issue

Our pilot light kept going out and I had already relit it four or five times myself. The technician from Gas Services Edmonton tested the thermocouple with a meter and found it was reading low, swapped it out, and it has held steady ever since.

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Honest about repair versus replacement

I fully expected to be told I needed a whole new tank. Instead the technician explained our unit was only 4 years old and the heating element was the actual problem. Fixed in under an hour and saved us a lot of money.

★★★★☆

Good fix, part took a couple extra days

Our tankless unit needed a specific control board that wasn't on the truck, so we waited two extra days for the part to arrive. Once it came in, the install was quick and everything has worked perfectly since.

★★★★★

Caught a leak before it became a bigger problem

I called Gas Services Edmonton about a small puddle near the tank and the technician found a loose fitting rather than a tank issue. Quick fix and he checked the anode rod while he was there since it was close to due.

★★★★★

No hot water fixed same day

Woke up to a cold shower and called first thing in the morning. They had someone out by early afternoon, diagnosed a tripped high-limit switch and a failing element, and we had hot water again before dinner.

★★★★★

Clear pricing, no surprises

The technician explained exactly what was wrong with the gas control valve and gave me the price before starting any work. Gas Services Edmonton stuck to that number even though the job took a little longer than expected.

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