Heat Pump Installation Cost: Full Breakdown for 2026

Heat pump adoption is accelerating fast. Federal tax credits up to $2,000, state rebates stacking on top, and real improvements in cold-climate performance mean more customers are asking for quotes. Here is every line item that goes into a heat pump install in 2026 — so your quote covers the job and makes sense to the customer.

Equipment Cost by Type

Air-source heat pump (ASHP) is the standard. A 3-ton 15 SEER2 single-stage unit runs $3,500–$5,500 for equipment (condenser + indoor coil + line set). A 3-ton 18+ SEER2 inverter unit runs $5,500–$8,500. Cold-climate inverter heat pumps (Mitsubishi Hyper-Heat, Fujitsu Halcyon XLTH, Carrier Infinity Greenspeed) add $1,500–$3,500 over standard inverters.

Ground-source (geothermal) is a different conversation — equipment is $8,000–$15,000 and loop installation is $10,000–$25,000, so total project is $20,000–$45,000. Only makes sense with 30% federal tax credit and 15+ year ownership horizon.

Electrical Panel Scope

A 3-ton heat pump needs a 30A 240V circuit for the outdoor unit and a 60A circuit for the air handler if it has electric heat strips. On a 100A main panel with gas heat and standard loads, you may need a panel upgrade to 200A ($2,500–$4,000). On a 150A or 200A panel, you may still need breaker shuffling or a sub-panel. Line-item the electrical work separately so the customer sees it.

Ductwork Reality

Existing gas furnace ductwork sized for 150–180°F supply air may not deliver enough CFM at the lower 95–105°F heat pump supply temperature. Verify static pressure and CFM on the existing system before quoting. If the ducts are undersized, you need to upsize trunks or returns — $1,500–$4,000 in sheet metal and labor. Skipping this check is how a heat pump install leaves the customer with a cold house and a service call that is actually a ductwork problem.

Line Set and Refrigerant

Pre-insulated line set (3/8 x 7/8, 25 ft): $150–$250. Longer runs or custom routing adds $200–$500. R-410A charge for a 3-ton system runs $150–$300 in refrigerant alone (prices have doubled in 2 years as R-410A phases out for R-454B). New installs after January 2025 use R-454B or R-32 which require AHRI-compliant equipment. Verify the equipment and your tools support the refrigerant before quoting.

The Backup Heat Decision

Three options for supplemental heat:

• Electric heat strips — $400–$900 for 10 kW strip kit. Simple, cheap, but expensive to run ($0.20+/kWh effective heat cost).
• Dual fuel (keep existing gas furnace) — Heat pump runs above balance point (typically 35°F), gas furnace runs below. Best efficiency but requires existing or new gas furnace ($3,000–$6,000 additional if new).
• Cold-climate inverter heat pump with no backup — Mitsubishi Hyper-Heat or Fujitsu XLTH maintains 100% capacity to 5°F and 70%+ to -15°F. In climate zones 4–5, no backup is often adequate. In zone 6–7, consider pairing with electric strips for the once-a-year polar vortex event.

Permits, Inspection, Tax Credit Documentation

Mechanical permit ($100–$300) and electrical permit ($100–$300) are standard. Inspection usually bundled. For the federal 25C tax credit (up to $2,000), the heat pump must meet CEE Tier II efficiency and the customer needs the manufacturer certification statement. Hand them a complete document packet at project close — AHRI certificate, manufacturer specs, your installation invoice. Customers who do not get the credit because of missing paperwork remember it forever.

Total Install Range

Low end: 3-ton 15 SEER2 straight swap on a home with adequate panel and ductwork: $6,500–$8,500.

Mid: 3-ton 18 SEER2 inverter with electric strips, minor duct modifications: $9,500–$13,000.

High: 3-ton cold-climate inverter, panel upgrade, duct resizing: $14,000–$18,000.

Use the Heat Pump Installation Cost Calculator to build a quote by tonnage, SEER rating, electrical scope, duct work, and backup type.