How Much Does Heat Pump Installation Cost?

The cost of installing an air source heat pump depends on the size of your home, the type of heat pump you choose, and the complexity of the installation.

The gross cost to replace a heat pump and air handler in an average 2,000 sq ft home runs $11,798 to $26,422 before rebates. After Xcel and state rebates, most UniColorado customers paid around $14,246 out of pocket.

Beyond the heat pump and installation, budget for any necessary home modifications: insulation improvements, refrigerant line runs, or an electrical panel upgrade if your current panel is at capacity. These additional costs vary by home.

The upfront cost of an air source heat pump is higher than most other heating systems, but lower energy bills over time offset that difference for most Colorado homeowners.

If you already have a heat pump and it's failing, the heat pump replacement cost in Denver tracks closely with new installation pricing - $11,700-$25,400 before rebates depending on system size and tier, and $10,562-$15,504 out of pocket for most UniColorado customers in 2026 after Xcel and Colorado state incentives are applied.

Replacing an existing heat pump differs from a first-time install in a few ways that affect the math:

Most replacements happen because the existing heat pump is 12-15 years old and refrigerant or compressor failures make repair uneconomical. The exception: pre-2010 R-22 systems, where any refrigerant leak effectively forces a replacement decision - R-22 is no longer in production and refills run $1,300-$2,700 on their own.

Replacement is also when most Denver homeowners switch from a standard heat pump to a cold-climate unit. The Xcel rebate gap ($2,250/ton vs. $900/ton) closes most of the price difference, and the cold-climate system handles the days the old one couldn't.

Properly sizing an air source heat pump is important to ensure effective heating and cooling. An undersized unit will struggle to keep up with demand. An oversized unit will short cycle, reducing efficiency and increasing wear.

Key factors that determine the right size:

One ton of cooling capacity equals the ability to move 12,000 BTUs per hour. A 3-ton heat pump pushes 36,000 cooling BTUs. Most air-source condensers come in 1-ton (12,000 BTU) increments, from 2 tons up to 5 tons for residential.

Most heat pump-compatible residential furnaces handle 40,000-120,000 heating BTUs. Air source heat pumps also require high-efficiency indoor coils installed on top of the furnace, connecting the outdoor condenser to your air handler.

We recommend a full sizing assessment by an HVAC professional. The simplified ranges below are a starting point only.

Most UniColorado customers save $9,500 on average through a combination of Xcel Energy rebates and the Colorado state heat pump tax credit. We handle all the paperwork and apply these as an up-front discount on your project.

Xcel Energy's Energy Efficiency Program offers $2,250 per heating ton for cold climate heat pumps and $900 per cooling ton for standard models. The Colorado state tax credit adds another $1,000. No income verification required for either program.

Note on HEAR: Income-qualified households under 150% AMI may qualify for HEAR rebates up to $8,000, but Region 1 (Front Range) funding is fully reserved as of April 28, 2026. UniColorado is no longer including HEAR on new projects. Region 2 counties (outside the Front Range) still have HEAR funding. Front Range customers: use Power Ahead Colorado ($1,500, no income limit) instead. See our HEAR page for the latest status.

To see how your annual energy savings compare between gas and a heat pump at current Xcel rates, use our switchover calculator. It factors in your home size, current fuel type, and available rebates to show your net cost and estimated payback period.

For most Colorado homes, a cold climate heat pump is the right call. Here is how the two types compare:

Cold-climate units are top-of-line, feature-packed systems produced in smaller volumes than standard heat pumps. They require a variable-speed, communicating furnace or a variable-speed electric air handler. Those compatible furnaces are premium product lines, which adds to the project cost.

Several factors drive the final installed price of an air source heat pump:

We no longer take attic or crawl space installations. If your air handler sits in an attic or your equipment lives in a crawl space, the ranges on this page will not match the quotes you get, because contractors who still do this work price the access in. Crawl space installs typically add $400 to $800, and attic installs run about $500 to $1,200 more. Everything moves slower in those spaces: pulling the old unit out, setting the new one, running lineset and condensate, and getting it all to pass inspection.

Attics carry a safety problem on top of the labor. On a 95 degree Denver day an attic can hold temperatures well above 130 degrees, which is dangerous for a crew doing physical work up there. Many companies will not schedule attic jobs in the summer at all, and that heat risk is a big part of why we stopped doing attic work entirely. If your system is in an attic, expect a smaller pool of bidders, a higher price, and possibly a wait until fall.

Adding an air source heat pump condenser to a home that has never had central AC requires two free spaces in the electrical panel. If the furnace is also being replaced with an electric air handler, add two more spaces.

The outdoor condenser typically needs one 208-220v circuit at 15-40 amps. An electric air handler or furnace requires an additional 20-50a 220v circuit. If your panel has no open slots, a panel replacement or subpanel may be required. In some cases, circuits can be condensed per electrical code without a full upgrade.

A subpanel is cheaper than a full panel replacement and is common for heat pump projects. Cost ranges: full panel upgrade $3,650-$5,900, subpanel installation $2,000-$3,350+.

Heat pump efficiency is measured by three ratings: COP, SEER, and HSPF. Each measures a different operating condition.

A heat pump with a COP of 3 produces 3 units of heat per unit of electricity consumed. SEER2 and HSPF2 are the updated 2023 standards (replacing SEER and HSPF); they test at more realistic conditions and produce slightly lower numbers than the older ratings.

Cold climate heat pumps typically carry SEER2 ratings of 20+ and HSPF2 ratings of 10+, which is why they qualify for higher Xcel rebates and deliver lower annual operating costs despite the higher purchase price.