Who repairs an oven not heating to temperature in Toronto? N Appliance Repair does. Call (437) 524-1053, available 7 days a week. We've been fixing gas and electric ovens across Toronto — including North York, Scarborough, Etobicoke, and Mississauga — since 2017. An oven that won't reach the set temperature makes cooking unreliable and can be a food safety hazard. The repair is almost always straightforward once the right component is identified.
Quick Answer: Gas ovens not reaching temperature almost always have a weak igniter. Electric ovens typically have a failed bake element or a faulty oven sensor. Toronto oven repair costs $165–$320 CAD including parts and labour. Call (437) 524-1053 for same-day service.
Why Is My Gas Oven Not Heating to the Right Temperature?
Gas ovens use a glow-bar igniter to light the main burner. This igniter serves a dual purpose: it glows hot to ignite the gas, and it acts as a current-sensing switch that opens the safety gas valve once sufficient heat is reached. When the igniter weakens with age, it may still glow and light the burner, but it cannot draw enough current to hold the safety valve fully open. The result is a burner that runs at reduced output — the oven lights and heats, but never reaches the set temperature.
This is particularly common in older GE, Frigidaire, Samsung, and LG gas ranges where the flat-style igniter ages predictably. Alex M., our lead technician, notes that a gas oven that takes more than 15 minutes to preheat to 350°F (177°C) almost certainly has a weakening igniter.
Why Is My Electric Oven Not Heating to the Right Temperature?
Electric ovens heat using a bake element at the bottom of the oven cavity and a broil element at the top. The most common failure is a partially burned bake element — a small section of the element coil burns through, reducing total heat output significantly. The oven still heats (from the remaining intact sections) but can never reach the set temperature.
The second common cause on electric ovens is a faulty oven temperature sensor (thermistor). This small probe measures the oven cavity temperature and feeds that data to the control board. A sensor that reads high will cause the control board to cut power to the element early, leaving the actual oven temperature much lower than set.
What Are All the Causes of an Oven Not Reaching Temperature?
- Weak or failing gas igniter — Glow bar draws insufficient current; burner runs at partial output.
- Partially failed bake element (electric) — One section burned through; reduced heat output.
- Faulty oven temperature sensor (electric and gas) — Incorrect temperature readings cause premature cycling off.
- Failed safety valve (gas) — Rare but possible; the valve itself fails to open fully despite a functioning igniter.
- Door seal deterioration — A warped or cracked door seal allows heat to escape, making preheat times longer and temperature inconsistent.
- Control board fault — The board fails to supply correct voltage to the bake element or to interpret sensor readings correctly.
How Much Does Oven Repair Cost in Toronto?
Oven repair costs in Toronto typically range from $165 to $320 CAD including parts and labour:
- Gas igniter replacement: $185–$255
- Bake element replacement (electric): $165–$230
- Oven temperature sensor: $155–$210
- Safety valve replacement (gas): $230–$310
- Door gasket/seal: $140–$185
- Control board: $260–$340
All repairs include a 90-day parts and labour warranty.
How Do We Diagnose and Fix an Oven Not Reaching Temperature?
Verify the temperature with a calibrated thermometer
We place an oven thermometer in the centre of the cavity and preheat to 350°F. If the measured temperature is more than 25°F below set temperature, the oven has a functional fault, not a calibration issue.
Inspect the igniter (gas) or bake element (electric)
For gas: we observe the igniter during a preheat cycle — it should glow orange within 90 seconds. For electric: we visually inspect the element for breaks and test with a multimeter.
Test the oven temperature sensor
We measure the thermistor resistance at room temperature — it should read approximately 1,080–1,100 ohms at 70°F. A reading outside this range indicates a faulty sensor.
Replace the faulty component and calibrate
We install the correct OEM replacement part, then run a full preheat and temperature hold test to confirm the oven reaches and maintains the set temperature accurately.
Warning: If your gas oven makes a loud "pop" or banging sound when the burner ignites, this means gas has accumulated in the oven cavity before igniting — a sign of a failing igniter that is no longer opening the gas valve promptly. Do not continue using the oven until the igniter is replaced. Gas accumulation followed by delayed ignition is a fire hazard.
Oven Not Reaching Temperature in Toronto?
Same-day service available. We carry oven igniters and elements. 90-day warranty on all repairs.