Summary: Summary: In 2026 a new HVAC system costs $7,000 to $15,000 installed for central AC plus a gas furnace, $10,000 to $22,000 for an air-source heat pump, $4,500 to $8,000 for a furnace alone, and $5,000 to $9,000 for central AC alone. Prices rose 5 to 8 percent over 2025, driven by the R-410A refrigerant phase-out and labor costs that now reach 55 percent of project cost. Ductwork condition and proper sizing move quotes more than brand choice.
Central AC plus gas furnace is the standard American system and the pricing baseline: $7,000 to $15,000 installed for mid-efficiency equipment in 2026, $12,000 to $25,000 for high-efficiency variable-speed systems. The furnace typically lasts 18 to 25 years and the AC condenser 12 to 18 years, so the AC usually gets replaced twice per furnace in a long ownership.
Air-source heat pumps run $10,000 to $22,000 installed, or $14,000 to $28,000 for cold-climate ducted models. Ductless mini-splits cost $2,500 to $6,000 per zone installed, or $4,500 to $15,000 for a 2 to 4 zone system. Heat pumps cost more upfront than AC-plus-furnace but heat and cool with one box; the economics depend on your electricity versus gas rates.
The single biggest driver is the January 1, 2025 ban on R-410A refrigerant in new equipment. Every manufacturer redesigned around R-454B or R-32, retooling factories and re-certifying equipment lines. Those costs flowed into 2025 and 2026 pricing, adding roughly 5 to 8 percent. There is no going back: R-410A equipment is gone from new sales permanently.
Labor is the second driver and the larger long-term one: labor now accounts for up to 55 percent of total HVAC project cost, up from 48 percent in 2020, on skilled technician wages of $65 to $85 per hour in many markets. Tariffs on imported HVAC components added another 3 to 5 percent. None of these are cyclical: expect the price floor to keep rising.
Ductwork is the great unknown: good existing ducts add nothing, duct repair adds $1,000 to $2,500, and full replacement adds $3,000 to $5,000. Electrical upgrades (new disconnect, panel space, or a panel upgrade for heat pumps) add $500 to $2,500. Difficult access, such as attic air handlers with no walkway or rooftop units needing a crane, adds labor hours fast.
Efficiency tier moves the equipment price substantially: stepping from 14 SEER2 to 18 SEER2 typically adds $1,500 to $3,000. Permits run $100 to $400 in most jurisdictions. And the brand premium is real but modest: top-tier brands cost 10 to 20 percent more than value brands for comparable specs, which buys dealer network and parts availability more than reliability.
Proper sizing starts with a Manual J load calculation: a room-by-room heat loss and gain analysis accounting for insulation, windows, orientation, and climate. The rule of thumb is about 1 ton per 500 square feet, but two identical-footprint homes can need different sizes based on insulation and windows. Insist on the load calc: it is the mark of a professional and takes a competent tech under two hours.
Oversizing is the most common and most expensive mistake: an oversized system short-cycles, never runs long enough to dehumidify, and wears out faster. Undersizing cannot hold temperature on design days. The right size runs long, steady cycles: comfortable, dry, and efficient. If a contractor sizes by square footage alone or, worse, matches your old system's size without checking, get another bid.
Most homeowners finance HVAC: 0-percent or low-APR 12 to 60 month plans through the contractor or manufacturer are common, and they beat credit cards decisively. Home equity lines offer the lowest rates for those with equity. Some utilities offer on-bill financing for heat pumps at attractive terms: ask your utility before you sign anything.
Stack every incentive before you compare final prices: state rebates, utility rebates ($300 to $8,000 for qualifying heat pumps in some territories), and manufacturer promotions. Get quotes with and without rebates itemized so you can see the true equipment price. And remember the federal 25C credit is gone for 2026 installations: any quote still advertising it is working from an old script.
Data current as of October 2026. Sources: contractor pricing data and manufacturer guidance. Estimates only, not a quote. Always get multiple written quotes from licensed local HVAC contractors.