The most efficient heat pump systems available are geothermal (ground-source) heat pumps, which achieve Coefficient of Performance (COP) ratings of 3 to 5—meaning they produce up to 5 times the heating energy they consume. If you are restricted to air-source systems, top-tier ductless mini-splits and inverter-driven systems lead the market.
Lennox, Daikin, and Mitsubishi are widely recognized as the industry leaders for the most efficient air-source heat pumps, while Bosch is a top performer for packaged systems. For unmatched peak efficiency, Lennox takes the top spot with models boasting a massive 26 SEER (cooling) rating.
A heat pump is part of a home heating and cooling system and is installed outside your home. Like an air conditioner such as central air, it can cool your home, but it's also capable of providing heat.
The $5,000 rule is a guideline to help homeowners decide whether to repair or replace their HVAC system. You multiply the age of your unit by the cost of the needed repair. If that number exceeds $5,000, replacing your HVAC system is often more cost-effective.
Overall, ground source heat pumps tend to be more efficient across the year. But there are plenty of other factors that affect a heat pump's efficiency, regardless of the type. You'll get an efficient low carbon heating system whichever technology you go for, so long as you: get a good design and installation.
Best Heat Pump Brands of 2026
If your heat pump is unexpectedly expensive to run, the most common culprits are inefficient auxiliary/backup heat, high local electricity rates, or a system that isn't sized properly.
The best time to buy a new HVAC system is during the off-peak seasons, particularly in winter months (December through February) and early fall (September through October).
The "two-foot rule" in HVAC is a duct design and installation guideline that requires a minimum of 24 inches of straight, uninterrupted space between branch take-offs (where air taps off the main trunk). It is also applied to spacing branches away from end caps, transitions, and the main plenum.
Replacing a 2-ton heat pump and air handler typically costs $𝟔,𝟓𝟎𝟎 to $𝟏𝟎,𝟓𝟎𝟎 fully installed. This price range generally breaks down into $3,000 to $5,000 for the equipment and $2,000 to $4,000 in labor. Your exact total will depend on the following factors:
What are the disadvantages of a heat pump?
The most efficient heat pumps available are geothermal (ground-source) systems. For air-source, the Lennox SL25XPV holds top marks. Ground-source systems like the ClimateMaster Trilogy 45 achieve unmatched efficiency, while ductless brands like Quilt lead the mini-split market.
For a 2,000-square-foot home, heat pump installation or replacement typically ranges from $6,000 to $15,000, depending on system size, efficiency, local labor costs, and any additional installation requirements.
In colder climates, 95% efficient gas furnaces fare better than ENERGY STAR® heat pumps. And, due to the relatively lower cost of natural gas versus electricity, lifetime operating costs should be considered as well. Learn more about high-efficiency furnaces.
Energy efficiency that pays off: Viessmann heat pumps are built for high efficiency, which means lower heating bills in the long run. They are often described as high-end or “Rolls Royce” of heat pumps.
Top-of-the-line heat pumps feature variable-speed compressors and smart-grid integration, yielding peak efficiencies. Expect to pay between $15,000 and $30,000+ fully installed, depending on your home's square footage. Top industry leaders include Carrier, Lennox, and Trane, while residential startups like Quilt offer highly localized room sensing and app controls.
The Rule of 5000 Rule is simple: Multiply the cost of the needed repair by the age of your air conditioner. If the result is greater than 5000, AC replacement is generally the smarter choice. If it's less than 5000, a repair might still be worth the investment.
Which HVAC Brands Last the Longest?
The answer: neither is ideal. Properly sized ductwork helps your system move air efficiently, keeps your home comfortable, and prevents unnecessary strain on your equipment.
Have HVAC Prices Gone Up in 2026? Yes HVAC prices have steadily increased over the past few years, and 2026 is no exception. These increases are affecting everything from entry-level systems to high-efficiency units, making it more expensive than ever to install or replace HVAC systems.
Getting competitive bids from several contractors will save you money. For large installation jobs, it's common for company-to-company price differences to exceed $1,500 for the same equipment and work. Even for smaller installation jobs, prices vary considerably.
Once your home is properly weatherized, you may be able to save money upfront on a heat pump (by installing a smaller sized unit) and save money ongoing (by having lower heating and cooling bills). Some heat pump incentives may even require that your home is weatherized beforehand to be eligible.
Your heating and cooling system is by far the biggest energy consumer in your home. Air conditioners, furnaces, and heat pump HVAC systems work hard to keep your home comfortable year-round, but they also account for almost half of your energy bill.
This is especially true if your house has a heat pump. Heat pumps are most efficient until temperatures fall below 30 degrees outside. Once the temps dip below that, heat pumps can't run as efficiently to keep up with the cold, and backup electricity often kicks on.
The fix: Lower your home temperature to 68 degrees when you're home. Maintain comfort by adding extra layers of clothing – try fabrics like fleece, flannel and wool – and don't forget comfy slippers and blankets. If you can comfortably go a degree or two cooler than 68, your wallet will benefit even more!