A heat pump heats and cools with the same outdoor unit, moving heat into the house in winter and out of it in summer. Installed in a San Jose home, most projects cost $5,000 to $18,000, and a whole-home system often comes in around $10,000. A single ductless unit for one room can come in below that range; a dual-fuel system in a large house sits at the top. What you are replacing, and whether the house has usable ducts, decides most of the rest.
Price by type of system
| System | Typical installed price | Where it fits |
|---|---|---|
| Single-zone ductless (mini-split) | $3,500–$6,000 | One room, an addition, a converted garage |
| Multi-zone ductless, 2–3 zones | $6,000–$12,000 | Several rooms in a home without usable ducts |
| Ducted heat pump | $7,000–$15,000 | Replacing an AC and a furnace while keeping the ducts |
| Dual-fuel: heat pump with gas furnace backup | $10,000–$18,000 | Keeping gas heat for the coldest mornings |
Ductless systems are broken down room by room in the mini-split cost guide.
What moves the quote
Ducts. A ducted heat pump is the straightforward swap when the existing ducts are sound and large enough. Leaky or undersized ducts add repair or replacement work, or tip the choice toward ductless. Older ductwork is common in Willow Glen and Cambrian, so expect the ducts to be inspected there before anyone prices equipment.
Zones. Each ductless indoor unit adds equipment, a refrigerant line set and labor.
Efficiency. Heat pumps carry two ratings: SEER2 for cooling and HSPF2 for heating. Higher ratings and variable-speed (inverter) compressors cost more up front and less to run. In San Jose, where summer cooling does much of the work, the cooling rating deserves as much attention as the heating one.
Brand. Equipment prices differ between makers and between product tiers within one brand.
Electrical work. The outdoor unit needs a 240-volt circuit. If you are replacing a central AC, one is usually there already, though it may need upsizing. If an electric air handler replaces a gas furnace, its backup heat strips need a large circuit of their own, and an older home with a small or full panel may need a panel upgrade.
The rest of the job. Removing the old equipment and capping the gas line if the furnace goes, deciding whether the refrigerant lines can be reused, a pad or wall bracket outside, the condensate drain and the permit. A complete quote names all of these.
Heat pumps and San Jose weather
Winters here are mild with cool nights, comfortably within what a standard heat pump handles, so cold-climate models built for much harsher winters are rarely needed. The harder job is the hot afternoon on the valley floor. Sizing should come from a room-by-room load calculation that accounts for windows, insulation and attic heat, not from the size of the old unit. An oversized system short-cycles and leaves rooms uneven; an undersized one runs all afternoon and still falls behind. In Almaden Valley, many homes are larger, some over 3,000 sq ft, and a house on the warmer valley floor needs different sizing from one on a cooler hillside. In Rose Garden, older homes with big rooms often do better with more than one zone. In Evergreen, many tract homes have builder-grade equipment reaching replacement age, which makes a single swap to a heat pump an obvious option to price.
Dual-fuel makes the most sense when the gas furnace is fairly new: the heat pump carries most of the heating, and the furnace takes over below an outdoor temperature you set.
Rebates and the federal tax credit
Incentives come in a few types: rebates from your electric utility or a local energy program, state-run heat pump programs, and manufacturer promotions. They open, run out of funding and reopen, and many come with rules such as a minimum efficiency, a participating contractor, or approval before installation. Ask which programs are open when you get your estimate, and make sure any incentive shown on a quote is one you actually qualify for.
The federal tax credit for efficient heating and cooling equipment ended for equipment installed after December 31, 2025. A quote that still counts it is out of date.
A heat pump, or repair what you have?
A heat pump makes the most sense when both the AC and the furnace are due, or when the AC fails and the furnace is old as well: one installation replaces two systems. It also fits a plan to take the house all-electric. If your current system is younger and has one failed part, a repair is usually the better buy, and the repair-or-replace calculator walks through the numbers.
If you already have a heat pump, repair stops making sense when an older unit needs a compressor or a new coil, or when refrigerant leaks keep coming back. One that ices up in winter usually needs a repair, not a replacement, and the diagnostic fee for a repair visit is waived if you go ahead with the work. See heat pump freezing and heat pump repair.
How to get a firm price
Estimates for new systems are free. The technician looks at the ducts, the electrical panel, where the outdoor unit can go and which rooms run hot or cold, then prices the whole job, from the equipment to the electrical work and the removal of the old system. You approve the price before any work starts, and there are no hidden fees. More on the installation itself on heat pump installation.