If you’ve heard about ductless heat pumps, you’ve probably seen how efficient and quiet they are. But one question we hear often from Ottawa homeowners is:
Can a ductless system heat my entire house — even in -25°C weather?
At AirZone HVAC Services, the answer is a confident yes — when the system is properly designed, sized, and installed.
What Makes a Whole-Home Ductless System Possible?
Ductless systems aren’t limited to one room. Thanks to multi-zone setups, one outdoor unit can connect to multiple indoor heads placed strategically around your home. Each unit delivers heat directly into the room it serves, without relying on ductwork.
Systems we commonly install include:
- 3–5 indoor heads, each with its own thermostat
- High-efficiency cold climate heat pumps
- Zoned comfort that reduces energy waste
Want to see your options? Explore our ductless split air conditioner systems.
How Cold Can It Get Before It Stops Heating?
We install cold climate-rated heat pumps built to perform in harsh Ottawa winters. These systems operate efficiently in temperatures as low as -30°C — and keep on running while many older ducted systems struggle.
Common brands include Mitsubishi, Moovair, and Gree — designed specifically for Canadian climates.
Real Ottawa Example: Multi-Zone Setup in a 2,000 Sq. Ft. Home
Home Type: Older two-story in the Glebe
Layout:
- Living Room: 18,000 BTU
- Kitchen + Dining: 12,000 BTU
- Three Bedrooms: 9,000 BTU each
- Basement Apartment: 12,000 BTU
System Used: 5-zone ductless heat pump, Mitsubishi Hyper Heat
Result: Full-home comfort, reduced gas bills, independent controls in every zone
Benefits of Whole-Home Ductless Heating
- No ductwork needed — perfect for older homes and additions
- Zoned heating reduces energy waste
- Quiet operation compared to forced air
- Year-round comfort (heating + cooling)
- Eligible for rebates and financing through AirZone
Learn about our latest special offers and available financing options.
When Ductless Might Not Be the Best Fit
While ductless systems are incredibly flexible, here are a few cases where we might recommend alternatives:
- Large open spaces without defined rooms (might require higher-capacity heads)
- Poor insulation — the system will work, but performance drops if heat escapes too easily
- Extremely remote installs where running refrigerant lines is not feasible
Don’t worry — we handle full assessments to recommend the right setup for your space.
Ready to Go Fully Ductless?
Thousands of Ottawa homeowners have already made the switch to whole-home ductless heat pumps — and it’s not just for additions or retrofits anymore.
Whether you’re replacing an old furnace, building an addition, or looking to go all-electric, we can help design a system that works for you.
- Request a Free Quote
- Explore our ductless systems
- View current rebates and promotions
Let’s build your perfect ductless setup — room by room.
