Service
Furnace Installation & Repair
Your furnace is the backbone of comfort through an Ottawa winter. We install high-efficiency Lennox systems sized to your home's real heat loss — not just the biggest unit on the truck — and we diagnose and repair existing furnaces quickly, honestly, and without pushing a replacement you don't need.
Signs you might need this
- Furnace is 15+ years old or needs frequent repairs
- Uneven heating between rooms or floors
- Rising energy bills without a change in usage
- Strange noises, short-cycling, or a pilot/ignition that won't stay lit
What's included
Here's what you get with Thermoza.
Manual J-style load calculation before we quote anything
High-efficiency Lennox furnaces backed by manufacturer & workmanship warranty
Clean, code-compliant venting and gas line work
Straightforward repair pricing before we start any work
Explore more
Other services homeowners pair with this.
Ready for better comfort?
Let's get your home comfortable again.
Tell us what's going on with your furnaces and we'll help you plan the next step — or call us directly.