Service
Tank & Tankless Water Heater Installation in Ottawa
Whether you want the continuous hot water and space savings of a Rinnai tankless system, or a straightforward tank replacement, we size and install water heaters that match your household's real usage — with gas lines, venting, and PEX/copper work done clean and to code.

Signs you might need this
- You're running out of hot water with multiple people showering
- Your tank is 8–10+ years old or has started leaking
- You want to free up floor space in a tight mechanical room
- Water takes longer to heat or has a metallic taste/smell
Before you book
Tank or tankless: describe your hot-water needs
Tell us how many people use hot water and whether showers, laundry and other fixtures commonly run at the same time. Include the type, approximate age and location of your current water heater so the assessment can focus on a suitable replacement.
What to confirm before replacement
Ask about equipment, connections, venting, removal of the old unit and the expected interruption to hot water. If your current unit is rented, check your existing agreement before arranging replacement. Confirm the warranty terms for the proposed equipment and installation.
Explore our installation photos,request a personalized quote or see our Ottawa service areas before requesting a quote.
What's included
Here's what you get with Thermoza.
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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 water heaters and we'll help you plan the next step — or call us directly.