About Thermoza
Home comfort, built on the details.
Thermoza Inc. is an Ottawa-based heating and cooling contractor. We're not the biggest crew in the city — we're the one that shows up, sizes the system correctly, installs it cleanly, and tells you the truth about pricing.
Our story
Started in Ottawa, built around doing the job right.
Thermoza Inc. was founded in 2021 with a simple idea: an HVAC company should be judged by the quality of its installations, not just the size of its trucks. We're based on 35 Elvaston Ave in Ottawa, and every job we take on — from a single AC repair to a full furnace replacement — gets the same attention to sizing, workmanship, and honest pricing.
We work with trusted manufacturers like Lennox, Rinnai, Rheem, and Aprilaire, but the equipment is only half the job. The other half is making sure it's sized correctly for your home, installed cleanly, and left in a state we'd be happy to have in our own house. That's the standard behind every install, repair, and maintenance visit we do.
Why choose Thermoza Inc.
The installation matters as much as the equipment.
A high-efficiency furnace can only perform well when it's selected and installed correctly. That's why we focus on the details that affect comfort long after installation day.
From the first conversation to the finished installation, the experience should be clear, organized, and easy to understand.
Proper sizing, every time
A comfort system should match the home. We calculate real heating and cooling loads instead of defaulting to the biggest unit available.
Clean, code-compliant work
Organized wiring, sealed ductwork, and finished installations that look as professional as they perform — inspected and warrantied.
Transparent, upfront pricing
You get a clear number before work begins. No hidden fees, no surprise add-ons once the job is underway.
Fast, local response
Based right here in Ottawa, with same-day service and 24/7 emergency availability when comfort can't wait.
Trusted brands we install
Work with a local, licensed team
See what Thermoza can do for your home.
Whether it's a quick repair or a full system upgrade, we'll walk you through the options honestly — no pressure, no upsells.