Most of us look forward to curling up near the warm glow of a gas fireplace during the winter months. Whether you’re in Oshawa or Cobourg, that extra layer of comfort makes a big difference when the temperature drops. Gas fireplaces are known for being easy to use, but now and then they can run into problems. One common issue is delayed ignition. When your fireplace doesn’t light right away, or does so with a sharp noise, it can be unsettling and possibly unsafe. That’s when you may want to start considering gas fireplace repair services in Oshawa before the problem grows worse.
What Happens During Delayed Ignition
Delayed ignition means your gas fireplace isn’t lighting as soon as it should. When you turn it on, there may be a pause between when the gas releases and when it ignites. That delay might only last a few seconds, but during that time gas is building up inside the firebox. When it finally catches, the result can be a loud “whoosh” or even a small bang.
This kind of sound can be surprising, especially if you’re sitting close by. You may even see a puff of flame when it finally lights. That kind of reaction can catch even long-time fireplace owners off guard. It may not happen every time, which is part of the reason some people ignore it. But any delay in lighting is a sign something isn’t working the way it should.
What Causes Delayed Ignition
Most of the time, delayed ignition is caused by something blocking or slowing the flow of gas or air. A few common causes include:
• Dust or soot in the burner or pilot opening
• Weak or failing ignition components
• Blocked air passages interrupting the fuel mix
• Thermocouples or sensors that no longer respond properly
These parts wear down over time, especially if the fireplace is used regularly through the winter. Cobourg and Oshawa see long heating seasons, which means fireplaces here may need attention sooner than you’d think. If the ignition system isn’t clean or strong enough, gas won’t catch right away. That tiny delay changes how the flame behaves, and it’s usually the first sign there’s a larger issue building up.
Signs You Shouldn’t Ignore
Most gas fireplaces are quiet, so when things start sounding off, it’s time to pay attention. Here are a few signs that delayed ignition might be present:
• A faint puff sound or loud bang when the flame catches
• A smell of gas before the fireplace lights
• Flames that look weaker than usual or show up late
• A pilot light that won’t stay on or flickers often
Some homeowners may notice these signs more during very cold weeks when the unit is being used most often. It’s easy to assume these hiccups are just quirks. But over time, delayed ignition can put stress on your fireplace parts, and in some cases, be risky if gas builds up too long.
Why It’s Best to Call a Technician
Gas appliances should always be handled by licensed professionals. Trying to clean or adjust the system on your own can quickly lead to bigger problems. We’ve seen cases where small delays were ignored until parts burned out or gas valves needed replacing.
Trained technicians carry the right tools to take a look quickly and safely. They’ll inspect the burner, check gas flow, and measure how long ignition takes. If a part is worn out, they can replace it on the spot. Once everything is tuned properly, ignition should go back to being smooth and quiet again.
Another reason we recommend booking a visit as soon as you notice issues is to keep it from happening again. Regular service cuts down the chance of delayed ignition returning, especially during the winter season when things run every day.
What to Expect During a Fireplace Repair Visit
A typical service visit starts with a safety check. We look for gas leaks, worn seals, and anything that needs attention before touching the controls. Once the area is safe, we open the front panel or access door and take a closer look at the ignition system.
• The technician will clean the burner ports and check for buildup
• The pilot light and thermocouple are tested to make sure they’re in good shape
• If parts aren’t working well, they might be replaced during the same visit
Most repairs don’t take more than an hour or two once the problem is found. Booking your repair early in the season is a good idea, especially before Family Day or other holidays when you might want the fireplace working for guests. Since Oshawa and Cobourg winter temperatures linger well into March, it’s smart to keep things running with no interruptions.
Don’t Let Cold Nights Disrupt Your Comfort
Delayed ignition might seem small at first, but it’s usually a sign something inside the fireplace is out of balance. A slow or loud light-up can throw off your comfort and your peace of mind. While not every sound points to danger, changes in normal behaviour shouldn’t be brushed off.
If your fireplace doesn’t feel right or starts making you nervous when it lights, trust your instincts. Having it checked keeps you warm, safe, and ready to enjoy your space for the rest of winter. It’s worth staying ahead of the weather, especially when February nights are still long and cold in Durham Region.
Are you noticing signs of delayed ignition in your fireplace this winter season? Don’t wait until a small issue becomes a big inconvenience. At Fortis Heating & Air Conditioning, we specialize in expert gas fireplace repair services in Oshawa to ensure your fireplace remains safe and efficient. Contact us today to keep your home warm and cozy throughout the cold months.





