As Canadians face fluctuating temperatures and extreme weather, the demand for efficient, versatile heating and cooling has never been greater.
In this comprehensive guide, we explore the world of heat pumps: their types, pros and cons of heat pumps, costs, energy efficiency, and everything you should consider when choosing the best heat pump for cold weather and year-round comfort in your home.
Table Of Contents:
- Best Cold-Climate Heat Pumps
- Best Heat Pump Brands
- What Is A Heat Pump?
- How Does A Heat Pump Work?
- Which Type Of Heat Pump Is Best?
- Advantages of Heat Pumps
- Disadvantages of Heat Pumps
- Duct vs. Ductless Heat Pumps
- Cost Of A Heat Pump
- How Energy Efficient Are Heat Pumps?
- Can I Save Money On Heat Pumps?
- What Size Heat Pump Do I Need?
- Should I Maintenance My Heat Pump?
Best Cold-Climate Heat Pumps Overview
So how do you find the best heat pump for cold weather when every brand says theirs is built for winter? It helps to compare them side by side.
Below are four cold-climate-capable models we install across Toronto and the GTA, lined up on the numbers that actually matter in an Ontario winter.
Two of those numbers come up a lot: SEER2 rates how efficiently a unit cools over a season, and HSPF2 rates how efficiently it heats. With both, higher is better.
| Model | Type | Efficiency (SEER2 / HSPF2) | Effective Heating Down To | Best For | Warranty | Cost | Rebate-Eligible |
| Lennox SL22KLV | Ducted, variable-capacity | up to 21.1 / 10.5 | -29°C | Coldest-climate performance | 10-yr compressor and covered components | $$$ | Yes, when listed by NRCan |
| Carrier Infinity 23 (27VNA3) | Ducted, variable-speed | up to 23 / 10.5 | -25°C | Top efficiency, quietest listed option (53 dB) | 10-yr parts | $$$ | Yes, when listed by NRCan |
| Lennox EL21KLV | Ducted, variable-capacity | up to 20.5 / 10 | Not published by Lennox | Furnace-like warmth, mid-premium | 10-yr compressor / 5-yr parts | $$ | Yes, when listed by NRCan |
| Carrier Performance 18 (27TPA8) | Ducted, two-stage | up to 18.5 / 8.5 | Not published by Carrier | Value pick, dual-fuel pairing | 10-yr parts | $$ | Yes, when listed by NRCan |
4 of the Best Cold-Climate Heat Pumps for Canadian Winters
Here are four models worth a close look, from the all-out cold-weather performer to the value-friendly dual-fuel option.
Lennox SL22KLV
If you want the strongest cold-weather performance on this list, the SL22KLV is it. It’s Lennox’s most advanced cold-climate heat pump, built around a variable-capacity compressor and Electronic Refrigerant Injection, which keeps heat output up as temperatures drop.
It’s rated to keep heating in conditions as cold as -29°C, which covers all but our harshest cold snaps in the GTA. You also get up to 21.1 SEER2 and 10.5 HSPF2, operation as quiet as 58 decibels, and a 10-year limited warranty on the compressor and covered components.
It even earned ENERGY STAR’s Most Efficient Cold Climate designation for 2025. This is the premium choice for homeowners who want winter comfort without compromise.
Carrier Infinity 23 (27VNA3)
The Infinity 23 is Carrier’s flagship, and it’s the efficiency leader here at up to 23 SEER2 and 10.5 HSPF2. Its variable-speed compressor with Greenspeed Intelligence runs anywhere from 30 to 100% capacity, so it sips energy on mild days and ramps up when you need it.
It keeps heating down to -25°C and runs as quietly as 53 decibels, the quietest unit on this list. Carrier’s Consumer Choice Warranty lets you pick a 10-year parts plan on registration.
If you want top-tier efficiency and a heat pump your family will barely hear, this is a strong pick for cold weather.
Lennox EL21KLV
The EL21KLV is the comfortable middle ground. It’s a cold-climate heat pump that sits a step below the SL22KLV, with a variable-capacity compressor, up to 21 SEER2 and 10 HSPF2, and sound levels as low as 55 decibels.
Lennox positions it to deliver the rich, even warmth you’d expect from a gas furnace. Lennox doesn’t publish a low-temperature operating floor for this model, so if you’re on an exposed lot or see regular deep-cold stretches, ask us to confirm it’s the right fit.
You get a 10-year compressor warranty plus 5-year coverage on components, extendable to 10 years with registration, making it a smart mid-premium choice.
Carrier Performance 18 (27TPA8)
The Performance 18 is the value option here, built for premium comfort at a friendlier price than Carrier’s flagship.
It pairs a two-stage compressor with up to 18.5 SEER2 and 8.5 HSPF2, and it’s ENERGY STAR certified for energy savings. That two-stage compressor keeps operating consistently and quietly all year.
It doesn’t carry a dedicated cold-climate rating, so for the coldest stretch of a Canadian winter, we’d usually pair it with a Carrier gas furnace via Carrier’s Hybrid Heat compatibility. This dual-fuel pairing leans on the heat pump in milder weather and switches to gas when temperatures really drop, optimizing energy use and keeping your running costs sensible.
Best Heat Pump Brands
When it comes to choosing a heat pump for your home, selecting a reputable and reliable brand is crucial. Two leading brands, Lennox and Carrier, are known for their innovative technologies, energy-efficient solutions, and commitment to providing top-tier heating and cooling systems.
Husky’s team of skilled technicians is well-versed in the installation of Lennox and Carrier heat pumps. Choosing a trusted brand like Lennox or Carrier, coupled with professional installation and maintenance services from Husky, ensures that you experience the full benefits of an efficient, reliable, and environmentally conscious HVAC system. This combination of top-tier products and expert services sets the stage for a comfortable and sustainable home environment.
Lennox
Lennox stands out as a reputable brand known for its innovative and energy-efficient heat pump systems. With a commitment to quality and advanced technologies, Lennox products are designed to provide both comfort and efficiency.
Lennox is synonymous with innovation and cutting-edge technology in the HVAC industry. With a legacy dating back more than a century, Lennox has consistently delivered products that prioritize efficiency, comfort, and environmental responsibility. Their heat pump systems are designed to meet the highest standards, ensuring homeowners experience optimal performance and reliability.
Lennox heat pumps often feature advanced energy-efficient technologies, including variable-speed compressors and precise temperature control. This not only enhances comfort but also contributes to reduced energy consumption, translating into lower utility bills for homeowners.
Carrier
Carrier, a trusted name in the HVAC industry, offers a range of reliable and energy-efficient heat pump solutions. With a legacy of innovation, Carrier’s systems are designed to meet the highest standards of performance, making them a popular choice among homeowners.
Carrier, recognized as one of the founding fathers of modern air conditioning, has a rich history of pioneering HVAC solutions. With a reputation built on reliability and innovation, Carrier continues to be a go-to choice for homeowners seeking advanced heating and cooling systems.
Carrier heat pumps are engineered for efficiency and exceptional comfort. Their systems often incorporate advanced features such as variable-speed technology, providing precise temperature control and consistent performance.
What Is A Heat Pump?
A heat pump is a sophisticated and energy-efficient heating, ventilation, and air conditioning (HVAC) system that regulates indoor temperatures by transferring heat between the inside and outside of your home.
It works on the fundamental principles of thermodynamics, which lets it both heat and cool your living spaces with remarkable efficiency.
How Does A Heat Pump Work?
At its core, a heat pump operates like a reversible refrigerator. It uses a refrigeration cycle to extract heat from one space and release it into another.
In winter, it pulls heat from the outside air, ground, or water and moves it into your home for warmth. In summer, the process reverses: it pulls heat from your home’s interior and expels it outdoors to cool things down.
Which Type Of Heat Pump Is Best?
Air-Source Heat Pump
The most common type of heat pump is the air-source heat pump.
It extracts heat from the outdoor air, even in colder temperatures, making it suitable for a wide range of climates. An air-source system has an outdoor unit and an indoor unit, connected by refrigerant lines.
Air-source heat pumps are known for their versatility, cost-effectiveness, and ease of installation.
Water-Source Heat Pump
Water-source heat pumps extract heat from a water source, such as a well, lake, or pond.
While installing these systems can be more complex, they offer high efficiency and reliable heating and cooling. Water-source heat pumps are particularly advantageous for properties with access to a stable water source.
Geothermal Heat Pump
Geothermal heat pumps (also known as ground source heat pumps) utilize the Earth’s constant temperature below the surface to extract or release heat.
By circulating a fluid through underground pipes, these systems harness the Earth’s natural thermal energy. Although the initial installation costs can be higher, geothermal heat pumps are known for their exceptional efficiency and long-term cost savings.
Advantages of Heat Pumps
Energy Efficiency: Heat pumps are renowned for their energy efficiency. Unlike traditional heating systems that generate heat through combustion, a heat pump system transfers heat, requiring significantly less energy to operate.
Year-Round Comfort: Cold climate heat pumps meet both of your heating and cooling needs, offering year-round comfort with a single heat pump system. This versatility eliminates the need for separate cooling and heating systems, streamlining HVAC solutions.
Environmental Sustainability: By relying on heat transfer rather than burning fossil fuels, heat pumps produce fewer greenhouse gas emissions. This aligns with the growing emphasis on environmentally friendly technologies and sustainable living practices.
Consistent Performance: Regardless of external temperatures, air-source heat pumps remain effective. Even during colder Canadian winters, these systems can extract heat from the air and efficiently warm indoor spaces.
Potential Disadvantages
Installation Location: The effectiveness of a new heat pump depends on its installation location. Proper placement of the outdoor unit, whether on the ground or mounted on a wall, ensures optimal performance and efficiency.
Climate Considerations: While air-source heat pumps work well in most Canadian climates compared to a natural gas furnace, factors such as extreme cold temperatures might affect their efficiency. In such cases, supplemental heating sources may be recommended.
Size and Capacity: Choosing the right-sized heat pump is essential for efficient operation. Factors such as the size of the home, insulation levels, and local climate influence the capacity needed for optimal performance.
Duct vs. Ductless Heat Pumps
When it comes to ducted vs. ductless heat pumps, the best choice depends on your home’s specific needs.
Ducted systems distribute air through a network of ducts and are well-suited to larger homes with existing ductwork.
Ductless systems offer flexibility and individual control over different zones, making them ideal for smaller spaces or homes without ductwork.
Cost Of A Heat Pump
Understanding the cost of a heat pump matters before you invest. The upfront cost can be higher than that of a traditional heating system, but the potential for long-term savings on energy bills makes a cold-climate heat pump a financially sound choice.
The total cost goes well beyond the purchase price. To make a well-informed decision, weigh your specific needs, installation and operating efficiency, available rebates, and long-term savings. Do that, and you can enjoy reliable, energy-efficient comfort for years to come.
Initial Purchase Costs
The initial cost of a heat pump depends on several factors, with the type of heat pump being a primary consideration:
1. Air-Source Heat Pump
- Generally, the most affordable type.
- Prices vary based on capacity, brand, and added features.
2. Water-Source Heat Pump
- Often higher upfront because installation is more complex.
- Costs depend on factors like water-source accessibility and installation requirements.
3. Geothermal Heat Pump
- Typically, the highest initial cost.
- Installation involves drilling into the ground, which requires specialized equipment and expertise.
Installation Expenses
Installation is a significant part of the overall heat pump investment. Several factors influence it:
1. System Type
- Air-source heat pumps are generally easier to install, resulting in lower installation costs.
- Water-source and geothermal systems can require more intricate work, raising the total cost.
2. Home Size and Layout
- The size and layout of your home influence the complexity of the installation.
- Larger homes may require more extensive ductwork or multiple units.
3. Existing Infrastructure
- Homes with existing ductwork often find a ducted system more cost-effective.
- Ductless systems are flexible but can add costs if significant modifications are needed.
Operational Efficiency and Long-Term Savings
The upfront price is only part of the picture. It’s just as important to look at running costs and long-term savings:
1. Energy Efficiency
- Heat pumps are efficient, which means lower monthly utility bills.
- Higher-efficiency models may cost a little more upfront but can save substantially over time.
2. Long-Term Savings
- Even with a higher initial cost, heat pumps tend to pay back through reduced energy use.
- Many homeowners recoup their investment in lower energy bills over the life of the system.
Return on Investment (ROI)
Between reduced energy bills, increased home value, and available rebates, a heat pump can deliver a favourable return on investment over time.
Professional Installation and Maintenance
Choosing a reputable HVAC professional, such as Husky, for installation is crucial.
While professional services may incur additional costs, they ensure the installed heat pump is properly configured, optimizing efficiency and performance.
Regular maintenance, though an ongoing expense, is essential for preserving the system’s longevity and efficiency.
How Energy Efficient Are Heat Pumps?
One of the biggest advantages of a heat pump is its energy efficiency.
These systems deliver more heating or cooling for the same amount of energy than traditional systems can. That means lower utility bills and a smaller carbon footprint, in line with the growing focus on sustainable living.
Efficiency is what sets heat pumps apart as a sustainable, cost-effective solution. To understand it, it helps to look at how they perform in different conditions and the factors behind their eco-friendly reputation.
Operation Principles
Heat pumps operate on the fundamental principles of thermodynamics, using a refrigeration cycle to transfer heat between the indoors and outdoors. This process allows them to provide both heating and cooling functionalities efficiently.
Heating Mode:
- In cold weather, an air-source or geothermal heat pump extracts heat from the outdoor air or ground.
- The heat is then transferred indoors, providing warmth even in low temperatures.
Cooling Mode:
- In warmer weather, the process reverses. Heat is drawn from the indoor air and released outdoors, cooling your home.
Factors Contributing to Energy Efficiency
Variable-Speed Technology:
- Many modern heat pumps feature variable-speed compressors, allowing the system to adjust its output based on the specific heating or cooling needs.
- This avoids frequent starts and stops, improving efficiency and keeping indoor temperatures more consistent.
Seasonal Energy Efficiency Ratio (SEER2) and Heating Seasonal Performance Factor (HSPF2):
- SEER2 measures how efficiently a heat pump cools over a season, and HSPF2 measures how efficiently it heats. These are the current versions of the older SEER and HSPF ratings.
- With both, a higher number means greater efficiency, and modern systems often exceed the minimum standards.
Insulation and Home Efficiency:
- A heat pump’s overall efficiency is influenced by how well your home is insulated.
- A well-insulated home with energy-efficient windows and doors helps the heat pump work less to keep you comfortable.
Regular Maintenance:
- Cleaning filters, checking refrigerant levels, and inspecting the system all help maintain high performance.
- A well-maintained heat pump runs more efficiently and more reliably.
Can I Save Money On Heat Pumps?
Yes. Governments across Canada are actively encouraging homeowners to switch to energy-efficient technologies like heat pumps, and that often means money back in your pocket.
Right now, Ontario homeowners can get up to $7,500 toward an eligible cold-climate air-source heat pump through the Ontario Home Renovation Savings Program.
To qualify, the unit must appear on Natural Resources Canada’s list of qualified products, so it’s worth confirming its eligibility before you buy. Ask us about our current rebates and specials, and we’ll help you choose a heat pump that fits your home and qualifies for the most savings.
What Size Heat Pump Do I Need?
Choosing the right-sized heat pump is critical for performance and efficiency. The size of your home, its insulation, and the local climate all help determine the right capacity.
A professional HVAC specialist can assess your home and recommend a system tailored to your needs.
Should I Maintain My Heat Pump?
Yes, regular maintenance is essential for the longevity and efficiency of your system.
Simple tasks like cleaning or replacing filters, checking refrigerant levels, and inspecting the system can prevent breakdowns and keep your heat pump performing at its best throughout its lifespan.
Husky Experts are Here to Help
As the country continues to prioritize sustainable living and energy efficiency, switching to a heat pump is a meaningful step toward a greener home.
Investing in a heat pump isn’t just about heating and cooling. It’s about a more sustainable, eco-friendly lifestyle that fits the values of modern homeowners, and it’s proof of how far HVAC technology has come in making homes more comfortable and efficient.
Not sure which heat pump is best for cold weather in your home? That’s exactly what we’re here for.
Reach out to a friendly Husky representative for more information and get a free quote for any installation, maintenance, or repair of your new or existing heat pump system.