Scarborough’s post-war bungalows and side-splits have usually had at least one furnace replacement since they were built, but the ductwork and electrical behind the walls is often original. A contractor who’s mostly worked on newer subdivisions elsewhere in the GTA can genuinely misdiagnose a problem here that’s really about 60-year-old ductwork, not the furnace itself.
Ask If They’re Comfortable With Older Homes
Ask directly whether the company regularly works on homes with original ductwork or older electrical systems, not just new-build furnace replacements. A technician unfamiliar with older housing stock may recommend an unnecessary full-system replacement when the actual fix is duct sealing or modification.
Ask About TSSA Licensing
In Ontario, anyone working on gas-fired appliances — including most furnaces — is legally required to hold certification through the Technical Standards and Safety Authority (TSSA). Ask directly whether the technician coming to your home is TSSA-certified.
Understand How They Price Repairs
Some companies quote an hourly rate that can balloon once they’re on-site. Others, like us, quote a flat rate for the job before any work starts, so you know the cost upfront regardless of how long the repair takes.
Check Their Actual Response Time
“24/7 emergency service” means different things to different companies. Some route your call to an answering service that takes a message; others have a live dispatcher who can tell you, on the spot, when a technician will actually arrive.
Ask What Brands and Building Types They Service
A company that only knows new-build furnace brands may struggle with an older system or misdiagnose a ductwork issue as a furnace problem. Look for technicians experienced with both older houses and, if relevant, purpose-built apartment heating systems.
Red Flags to Watch For
- Immediately recommending full system replacement without inspecting the ductwork first.
- No licence number provided when asked.
- No firm price before work begins.
- Pressure to replace an entire system before a proper diagnosis has been done.
- No local presence in Scarborough — a company with no actual local trucks can’t reliably hit a fast response time.
Choosing the right company up front saves you money and, in an emergency, saves you time. If you’re comparing options in Scarborough, ask us these same questions — we work on both older housing stock and newer builds, and we’re happy to answer before you book.