As more Ottawa residents look for ways to reduce greenhouse gas emissions, heat pumps are becoming an increasingly popular choice. But in a city where winter temperatures routinely plunge well below freezing, many people ask: Will a heat pump work in Ottawa’s climate, and how low can it go? The answer depends on the type of heat pump you choose.
Ground-Source Heat Pumps
Also known as geothermal heat pumps, ground-source systems extract heat from the earth, where temperatures remain relatively stable and above freezing year-round, even in Ottawa. These systems can operate efficiently even during extreme cold snaps, with performance unaffected by temperatures as low as -30°C or below.
While they are highly efficient, ground-source heat pumps require a significant upfront investment due to the installation complexity.
Air-Source Heat Pumps
Air-source heat pumps extract heat from the air. While traditional models are most effective during the spring, fall, and milder winter temperatures, they struggle to perform efficiently in freezing weather.
Cold-Climate Air-Source Heat Pumps
Fortunately, cold-climate air-source heat pumps are specifically designed to work in harsher winter conditions, operating at temperatures as low as -30°C. These are more affordable than ground-source systems and a great fit for Ottawa homes.
That said, as temperatures drop, their efficiency decreases. In such cases, a backup heat source, such as a furnace, may be needed to maintain indoor comfort during extreme cold snaps.
Benefits of Switching to a Heat Pump
Cost-Effectiveness
Cold-climate heat pumps are far more efficient than gas furnaces, reducing energy costs despite the higher upfront investment. Many models include smart features like programmable thermostats for added savings. For homes using natural gas or oil, switching to electricity offers cost stability and environmental benefits.
Government Incentives
Programs like the Canada Greener Homes Loan help manage the cost of installing cold-climate heat pumps. With additional rebates expected soon, now is the perfect time for Ottawa homeowners to make the switch and embrace sustainable heating solutions.
For more information or to start your switch:
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Team Harding has been Ottawa’s leading home comfort specialist since 1994. We are a family-owned and operated local business and all of our installers and technicians are fully licensed.
