Can I replace a hot surface igniter on my gas fireplace myself or is that a TSSA-licensed job in Ontario?

You can replace the igniter yourself if it's a simple plug-in component, but if any gas line work, appliance disassembly beyond basic access, or electrical rewiring is involved, you'll need a TSSA-licensed gas fitter.

Here's the critical distinction: Ontario's TSSA regulations prohibit unlicensed work on gas appliances and gas lines. The question is whether your igniter replacement crosses that threshold or stays within homeowner-friendly territory.

If your igniter is a plug-and-play hot surface igniter — meaning it's a self-contained component with a connector that simply unplugs from the control board inside the firebox — you can replace it yourself. These are designed as user-serviceable parts, similar to changing batteries or a light bulb. The steps are straightforward: turn off the gas at the appliance knob and the main valve, allow the unit to cool completely, locate the igniter connector inside the firebox, unplug the old one, plug in the new one (available from fireplace parts suppliers for $80 to $200), and test the ignition. This requires zero gas work — you're not touching gas lines, fittings, or the gas supply.

However, if replacing the igniter requires you to disassemble the fireplace beyond simple glass or cover panel removal, disconnect any gas lines, remove the control board, or rewire electrical connections, that crosses into TSSA territory and must be done by a licensed G2 or G3 gas fitter. The rationale is straightforward: gas appliances are inherently hazardous, and any work that goes beyond basic component swaps risks creating gas leaks, improper ignition sequences, or dangerous combustion conditions. In Ottawa, you can expect to pay $200 to $400 for a licensed gas fitter to replace a hot surface igniter if professional installation is required — less expensive than the appliance risk of DIY work that goes wrong.

The safest approach: Before you attempt anything, consult your fireplace's manual or call the manufacturer's support line with the model number. They'll tell you exactly whether the igniter is user-replaceable or requires professional service. If the manual says "user-replaceable" or includes DIY replacement instructions, you're safe to proceed. If it says "licensed technician," don't guess.

A critical warning: Never shut off gas at the main meter to service a fireplace. If you need professional igniter service and want the work done right, a licensed gas fitter has the proper tools, knowledge of local code compliance, and responsibility to tag the appliance after service — protecting both you and your home insurance coverage.

If you'd like to find a TSSA-licensed gas fitter in Ottawa who specializes in fireplace service, you can browse fireplace contractors through the Ottawa Construction Network directory at justynrookcontracting.com/directory to compare local options.

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Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• 613Bins
• RenoMotion Inc.
• TIER 1 HVAC SERVICE'S INC
• Callandgone
• Treka Construction Group