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These are the heating and cooling problems our technicians are called about most often. Each one gets a proper diagnosis before any repair work begins.

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Furnace Ignitor Not Working

A failed ignitor prevents the burner from lighting, leaving the furnace blowing unheated air or shutting down on a safety lockout after several failed ignition attempts. Continued failed attempts can cause the draft inducer to run continuously, wearing it out faster than normal operation. We test the ignitor resistance, check the ignition control board sequence, and replace the ignitor with a compatible component in a single visit.

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Furnace Pressure Switch Stopping Startup

A pressure switch that trips and prevents furnace operation usually signals a venting restriction, a failing draft inducer motor, or a cracked pressure switch hose that cannot build the required negative pressure. Running a furnace with a venting restriction creates a combustion safety risk. We test inducer output, inspect the flue and exhaust path, and verify pressure switch operation before restoring normal function.

AC Compressor Won't Start

An air conditioner compressor that hums but does not start usually has a failed start capacitor that can no longer supply the starting torque the motor needs. Running the compressor repeatedly against a failed capacitor damages the motor windings over time. We test capacitor microfarad values against rated specs and replace any that are outside the acceptable range, restoring reliable compressor operation.

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Furnace Flame Sensor Dirty or Failing

A coated flame sensor cannot properly confirm that the burner has lit, causing the furnace to shut off the gas supply seconds after ignition as a safety measure. This produces a pattern where the furnace fires briefly and then shuts down repeatedly. We clean or replace the flame sensor rod and test the microamp signal it produces during combustion to confirm the system reads it correctly.

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Heat Pump Not Defrosting in Winter

A heat pump that stays iced over during winter cannot transfer heat efficiently, and if the defrost cycle fails to clear the coil, the system will eventually stop producing useful heat. Defrost failures usually trace to a faulty defrost control board, a failed reversing valve, or a defrost thermostat no longer triggering the cycle correctly. We test the full defrost sequence and replace the component responsible for the failure.

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Zone Control or Thermostat Sending Wrong Signals

A zone control board or thermostat that sends incorrect signals can cause rooms to overheat, others to stay cold, or the entire system to behave unpredictably. These faults are often misdiagnosed as mechanical failures when the system is actually responding correctly to bad input. We trace the signal path from the thermostat through the zone board to the equipment to isolate where the instruction is breaking down.

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Furnace Blowing Cold Air

A furnace that runs but delivers cold air usually has a failed igniter, a tripped high-limit switch from restricted airflow, or a gas supply issue preventing combustion. Running the blower without heat accelerates wear on the motor and does nothing to warm the home. We check the ignition sequence, flame sensor, limit controls, and gas valve to restore proper heating.

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HVAC System Short Cycling

A system that turns on and off every few minutes without completing a full cycle is usually responding to a safety condition. On a furnace, this often means a tripped high-limit switch from restricted airflow. On a cooling system, short cycling points to an oversized unit or a refrigerant issue causing rapid pressure fluctuations. We identify the trigger and correct the source.

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Carbon Monoxide Alarm Going Off

A CO alarm near the furnace should never be dismissed without professional verification. The most common cause is a cracked heat exchanger allowing combustion gases to enter the circulated air. Evacuate the home and call the gas utility before calling for service. We carry all required safety equipment and perform a full combustion analysis and heat exchanger inspection before returning the system to service.

Reviews

What Our Customers Say

★★★★★

Actually diagnosed the problem first

Two other companies quoted a repair without even opening the panel. The technician from Gas Services Edmonton tested everything first and found the real issue was a wiring problem, not the part I was told needed replacing. Saved me a lot of money.

★★★★★

Showed me his certification without hesitation

I asked to see his gas technician license before he touched the furnace and he pulled it out right away, no attitude about it. That kind of transparency made me trust the rest of the visit completely.

★★★★☆

Great work, appointment ran a bit long

The diagnostic took longer than expected because our system had a less common issue, but the technician stuck with it until he found the actual cause. Would rather have that than a rushed guess.

★★★★★

Explained everything before starting

The technician walked me through what he was testing and why before touching anything. No pressure to approve extra work on the spot, just clear information so I could decide. Gas Services Edmonton earned a repeat customer.

★★★★★

Caught an oversizing issue from a previous install

A previous contractor installed a system that was too big for our house. The technician explained why it was short cycling and gave us honest options instead of just patching the symptom.

★★★★★

Professional from start to finish

Punctual, clean, and clearly knew what he was doing. Gas Services Edmonton sent someone who treated our furnace like it actually mattered instead of rushing through the visit. Would recommend without hesitation.

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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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