Heat pump replacement cost: what to budget for

Two quotes land in your inbox. One covers a swap of old equipment. The other changes how several rooms get heat. Both say “heat pump replacement,” which is a lot of work for three words to do.

Start by sorting out what each price buys. That makes the number at the bottom much more useful than a quick search for what someone else paid.

This guide covers air-source heat pumps in US homes. They move heat between the outdoor air and your home to heat and cool rooms. Systems that use buried ground loops, and heat-pump water heaters, are different jobs.

What real project costs can tell you

A ducted system moves warm or cool air through ducts, the passages that lead to rooms. A ductless system uses indoor units to serve areas of the home without that network of ducts. Either label still leaves plenty of room for different equipment and work.

Researchers at TRC and Resource Refocus studied costs in the TECH Clean California program. Their 2025 report gives these averages for single-family homes. The projects date from 2021 through June 2025. The authors put older costs in 2025 dollars to allow for price changes.

Type in the California study	Average installed project cost, before program discounts
Ducted heat pump	$22,104
Ductless heat pump	$17,000

The totals covered parts and the work to put them in. That included needed duct or electrical changes. These were jobs in existing homes, not just swaps of one old heat pump for another. The two groups also had different average equipment sizes.

These figures do not prove that ductless is cheaper for your home. They are historical averages from one state’s program, not a national 2026 price range or a quote for your job. The study does not give a full list of included items for each project or settle how taxes were handled.

Use complete local quotes to build your budget. When a price differs from an online figure, compare the job behind it before deciding what the gap means.

What stays, what goes and which rooms get served?

“Replace the heat pump” should come with a list of parts. In a ducted home, that may include an air handler, the indoor unit that moves air through the ducts, as well as the outdoor unit. The installer needs to check the exact indoor and outdoor models as a set, including any old parts that stay.

For a ductless plan, count the indoor units and name the areas each serves. A price for one area is not a whole-home price. Placement matters too: the plan needs to explain how heat and cooling reach the rooms you use, not just where a unit will fit on a wall.

Some homes use a mix of room units and ducted equipment. Get the whole layout on one work plan so that a missing room does not become a surprise later. The upstairs bedroom should not have to learn about the project through gossip.

Give the old heating system a clear role

A furnace heats air. In a dual-fuel system, a heat pump works with a furnace that burns fuel. Keeping a suitable furnace may be part of the plan; removing it may be part of another. Neither choice follows from the words “new heat pump.”

Backup heat supplies extra heat when the heat pump needs help. Some systems use electric heaters for this job. Others use a separate heating system. Some designs do not need backup. The home’s needs, local weather and equipment output shape that choice.

Have the proposal state what supplies heat, which old parts stay and when each heat source will run. A furnace that stays still needs to work with the new parts and controls. A furnace that goes can bring removal and other work into the price.

What changes the equipment you need?

Plan for heating as well as cooling

Capacity is how much heating or cooling equipment can provide. A load calculation works out how much the home needs, based on its size, windows, insulation and local conditions. Floor space or the size of the old unit alone cannot settle the choice.

Have the installer name the cold outdoor temperature used in its heating plan. Then compare how much heat your home needs at that temperature with what the proposed model can supply. A product may be able to run in deep cold without making enough heat for your home.

The same plan needs to cover cooling. Tell the installer about rooms that get too hot, stay damp or never warm up. Replacing the box alone does not show how those problems will be fixed.

Read heating and cooling ratings separately

Heating and cooling have separate ratings. For heat, look for HSPF2: Heating Seasonal Performance Factor 2. It rates the heat you get for the power used over a test season.

For cooling, SEER2 stands for Seasonal Energy Efficiency Ratio 2. A higher score means less power for the same cooling under that test. A higher HSPF2 score means the same for heating under its test.

Neither rating is the amount of heat the system can supply on your coldest days. Nor is it a forecast of your energy bill. Local power prices, weather, use and any extra heat still matter. A label has many talents; reading your future bill is not one of them.

Compare exact models and their ratings as a matched set. Then weigh any added price against the comfort changes you want and a running-cost estimate for your home. A higher rating alone does not show when the extra price will pay back.

Budget for the work around the box

Existing parts can save work if they are suitable for the new setup. That needs a check, not an assumption that every old part can stay—or that it all must go.

Put electrical work on its own line. The electrical panel is the box that sends power through the home’s wiring. Adding wiring does not always mean a new panel. Changes to the power supply into the house are a separate job. Have a qualified electrician check the new system, any extra electric heat and the rest of the home’s needs.

Also name the needed duct work, controls and refrigerant lines. These pipes carry refrigerant, the fluid that moves heat between the indoor and outdoor parts. The quote should say whether the lines can stay, need changes or must be replaced. Drains, supports and access to the equipment can add work too.

A unit on a roof or in a tight space may need lifting equipment or more access work. If another trade does some of the job, find out who arranges it and whether its bill is in the total. A complete heating quote can still leave you with a separate electrician’s bill if that is how the work is split.

Put complete offers side by side

Get written estimates after the firms have checked the home. Use the same list of rooms, equipment and work for each comparison. Separate required work from optional extras, such as an added air cleaner or service plan.

Part of the quote	What to put in writing
Heating and cooling plan	Areas served, indoor and outdoor models, parts kept and any backup heat.
Work in the home	Ducts, wiring, lines, controls, drains, supports, access and other trades.
Full price	Equipment, labor—the technician’s work—removal, cleanup, taxes and fees. Name anything left out.
Local approvals	Required permits (local approval for the work), inspections, who handles them and who pays.
Final setup	How the installer will check the finished system and show you its controls.
Repair promises	Parts and labor coverage, the installer’s promise about its work, and any required registration or paid service plan.
Changes and payment	Due dates, work not yet priced and how you will agree to added work and its cost.

Read repair promises as closely as the equipment list. A parts warranty promises to cover certain failed parts under stated terms. It may still leave you paying for labor. Get any required registration and other conditions in writing. If the installer ties labor coverage to a paid service plan, include those payments in your comparison.

Our guide to comparing quotes goes further into the paperwork. A lower total is useful only when you know what changed to reach it.

Keep discounts, payments and energy bills separate

Start with the full job price before aid. A rebate is a payment or discount under a program’s rules. Check that the exact work qualifies, the funding is available and approval comes at the right stage. Replacing an existing heat pump can have different rules from changing how the home is heated.

List each approved amount, who gets it and when it should arrive. Keep that list beside the full job price. Money paid later does not always lower what the installer needs today. Do not build the budget around the largest amount in an ad.

A tax credit cuts tax owed. The former federal home-improvement credit, Section 25C, does not cover new equipment put into use after December 31, 2025. That rule was checked on November 5, 2026. Do not subtract it from a new 2026 installation; other help has separate rules.

If you borrow, keep the job price separate from the cost of the loan. Interest is a charge for borrowing, and fees may add more. A small monthly payment does not tell you the full amount you will repay. Our heat-pump financing guide walks through payment plans, aid and timing.

Future energy costs need a separate estimate. If you switch from a fuel-burning furnace, the electric bill may rise while fuel spending falls. Compare both, including any fuel costs that remain. Use your home’s needs and local prices; hoped-for savings do not change the payments in a signed loan.

For an existing heat pump with a high bill, our electric-bill guide helps sort through use, prices and possible service needs. A high bill alone is not a reason to order a new system.

Before choosing replacement, get the cause of any problem and the repair options in writing. Then compare them with the full job you would buy. Keep that work plan, the price and payment dates together. That is a budget built around your home, with our heating and cooling hub nearby when you need the next part of the picture.