SHOWROOM HOURS: 8:00AM to 5:00PM
A Proud Canadian HVAC Company
Menu
SHOWROOM HOURS: 8:00AM to 5:00PM
Menu
Menu
A Proud Canadian HVAC Company
Can a heat pump keep your home warm during an Ontario winter? When paired with a furnace, these two heating systems can work together to provide reliable indoor comfort as outdoor temperatures change. Learn how a heat pump and furnace combination works, when each system operates and why this setup can be an efficient heating solution for Canadian homeowners.
Heat pumps provide both heating and cooling: They transfer heat rather than generate it by burning fuel, making them an energy-efficient option for year-round comfort.
Furnaces provide backup heating: In a dual-fuel system, the furnace can take over when outdoor temperatures reach a predetermined changeover point.
Both systems work together automatically: A properly configured thermostat or control system determines which heating source operates.
Cold weather affects heat pump performance: Heat pumps can operate in cold temperatures, but their heating capacity and efficiency generally decrease as outdoor temperatures fall.
Regular maintenance is important: Keeping both systems properly maintained helps support reliable operation throughout the heating season.
When temperatures drop across Ontario, keeping your home warm and comfortable becomes a top priority. But what happens when you have both a heat pump and a furnace? Do they run at the same time, or does one take over when the weather gets colder?
Many homeowners are surprised to learn that these two heating systems can work together. This setup, commonly known as a dual-fuel or hybrid heating system, combines the energy efficiency of an electric heat pump with the powerful heating capabilities of a traditional furnace.
During milder temperatures, the heat pump can provide efficient heating by transferring warmth from the outdoor air into your home. As outdoor temperatures drop, the system can automatically switch to the furnace when it becomes more practical or efficient to use the backup heating source. The exact changeover temperature depends on your equipment, energy costs and system configuration.
For homeowners in Toronto, Richmond Hill and across the GTA, this combination can offer flexibility throughout Ontario’s changing seasons. Rather than relying on a single heating source, a dual-fuel system uses two technologies to help maintain comfortable indoor temperatures as outdoor conditions change.
So, how exactly do heat pumps and furnaces work together? Let’s look at how these systems operate, when your furnace takes over and what homeowners should know before winter arrives.
A heat pump works differently from a traditional furnace. Instead of generating heat by burning natural gas, it transfers heat from the outdoor air into your home using refrigerant and a heat exchange process. Even when temperatures feel cold outside, there is still heat energy in the air that a heat pump can capture and move indoors.
During milder fall and winter temperatures, a heat pump can provide an efficient way to heat your home while maintaining comfortable indoor temperatures. Because it moves existing heat rather than generating it directly, it can deliver more heating energy than the electricity it consumes. This makes heat pumps an increasingly popular option for homeowners looking to improve heating efficiency and reduce energy consumption.
Although modern heat pumps can operate in cold Canadian winters, their heating capacity and efficiency generally decrease as outdoor temperatures fall. When the weather becomes particularly cold, a dual-fuel heating system can automatically switch from the heat pump to the furnace.
A traditional gas furnace generates heat by burning natural gas, allowing it to provide consistent heating even during extremely cold weather. Depending on your system’s settings, the furnace may take over when outdoor temperatures reach a predetermined changeover point or when the heat pump can no longer meet your home’s heating demands efficiently. This allows homeowners to benefit from heat pump efficiency during milder conditions while having the furnace available when temperatures drop significantly.
One of the biggest advantages of having a heat pump and furnace combination is that homeowners generally don’t need to manually switch between the two systems. A properly configured thermostat and control system monitor indoor and outdoor temperatures to determine which heating source should operate.
For example, during a mild winter afternoon, your heat pump may be responsible for maintaining your home’s temperature. If outdoor temperatures drop overnight, the system can switch to the furnace when it reaches its programmed changeover point. The transition is designed to happen automatically, helping maintain indoor comfort without requiring homeowners to constantly adjust their heating settings. The systems are typically configured to avoid unnecessary simultaneous heating, although specific operation depends on the equipment and controls.
Using a heat pump and furnace together can offer homeowners more flexibility when it comes to managing heating expenses. Heat pumps are often highly efficient during milder temperatures because they transfer heat rather than generate it directly. However, as outdoor temperatures fall, their efficiency and heating capacity can decrease, potentially making a natural gas furnace the more economical option.
A dual-fuel system can be configured to switch between heating sources based on outdoor temperatures, energy prices and the operating efficiency of each system. The ideal changeover point isn’t the same for every home, as it depends on factors such as local electricity and natural gas rates, equipment performance and insulation levels. When properly configured, this combination can help balance comfort, energy consumption and operating costs throughout the winter.
Having two heating systems doesn’t mean you can overlook regular maintenance. Both your heat pump and furnace need attention to operate reliably, particularly when Ontario temperatures fluctuate throughout the winter. A neglected system may experience reduced efficiency, airflow problems or unexpected mechanical issues when you need heating the most.
Before winter arrives, it’s a good idea to have both systems professionally inspected. A technician can check the heat pump’s outdoor unit, inspect coils, assess refrigerant performance, examine electrical connections and make sure the furnace’s burners, blower motor and safety controls are operating correctly. It’s also important to keep your outdoor heat pump unit clear of accumulated snow, ice and debris, following the manufacturer’s recommendations. Routine maintenance helps identify potential problems early and ensures your heating system is ready to handle changing outdoor temperatures.
Yes! A heat pump and furnace can work together as part of a dual-fuel heating system. The heat pump typically provides heating during milder temperatures, while the furnace takes over when outdoor temperatures drop below a predetermined changeover point. This combination allows homeowners to benefit from the efficiency of a heat pump while having reliable backup heating during colder weather.
There isn’t one universal temperature. The changeover point depends on the heat pump model, furnace efficiency, local energy prices and the heating requirements of your home. Many dual-fuel systems are programmed to switch to the furnace when it becomes more economical or practical to operate. An HVAC professional can help determine the appropriate settings for your equipment.
Yes, many modern cold-climate heat pumps are designed to provide heating even in very low outdoor temperatures. However, performance varies depending on the model, installation and insulation of your home. Some homeowners choose a dual-fuel system with a furnace for additional heating capacity and flexibility during extreme cold.
A heat pump generally uses more electricity as outdoor temperatures drop because it needs to work harder to extract heat from colder air. Its efficiency also decreases as temperatures fall. However, it can still be an efficient heating option compared with electric resistance heating. In a dual-fuel setup, the furnace can take over when operating the heat pump is no longer the most practical option.
It depends on several factors, including electricity rates, natural gas prices, outdoor temperatures and the efficiency of your equipment. Heat pumps can be very economical during milder weather, while high-efficiency gas furnaces may have a lower operating cost during particularly cold conditions. A properly configured dual-fuel system can switch between the two based on operating costs and performance.
Not necessarily. Some modern cold-climate heat pumps can heat an entire home without a traditional furnace, while others are installed alongside existing furnaces as part of a dual-fuel system. The right option depends on your home’s heating requirements, insulation, existing equipment and budget.
Yes. Although they work together, heat pumps and furnaces have different components that require individual inspections and maintenance. Heat pumps need attention to their outdoor units, coils, refrigerant systems and electrical components, while furnaces require inspections of burners, heat exchangers, filters and safety controls. Annual professional maintenance helps keep both systems operating reliably.
a Canadian HVAC Company
Richmond Hill: 85 West Wilmot St. unit 12 Richmond Hill, Ontario L4B 1K7
Toronto: 1015 Bloor St W Second Unit 203, Toronto, Ontario M6H 1M1
Showroom hours: Mon – Fri: 8:00AM – 5:00PM
Available 24/7 on phone
Saturday & Sunday: Contact by phone
After Hours & Holidays: Contact by phone
