HVAC Costs: 2026 Price Guide

Residential HVAC — heating, ventilation, and air conditioning — covers every system that keeps a home's air at livable temperature and quality. On the heating side, that means gas, electric, and oil furnaces, boilers, and heat pumps. On the cooling side, central air conditioners, ductless mini-splits, and heat pumps running in reverse. Ventilation ties them together: ductwork that distributes conditioned air, filtration that cleans it, and fresh-air systems that keep it healthy. Most American homes run a split system — a furnace indoors paired with an air conditioner outdoors — but packaged units, ductless mini-splits, and geothermal systems each own meaningful niches, and heat pumps are steadily taking share from gas in mild climates.

HVAC costs vary more than almost any other home trade, and understanding why is the key to using these guides well. Four variables drive nearly every quote. First, system type: a single-zone mini-split ($2,000–$7,000) and a geothermal system ($15,000–$35,000+) are both "HVAC," and they share almost nothing on price. Second, home size and the resulting equipment capacity — each ton of cooling and each 20,000-BTU step of heating adds real money. Third, efficiency ratings: the jump from minimum-efficiency (14.3 SEER2, 80% AFUE) to premium (20+ SEER2, 98% AFUE) can double equipment cost while cutting operating bills 20–40%. Fourth, the installation context — ductwork condition, electrical panel capacity, gas line routing, venting constraints — which is invisible in online estimates but adds $1,000–$5,000 to real projects.

How to use these cost guides: start with the guide matching your project (furnace replacement, new AC, full system), note the national average and range, then work through the cost factors to adjust for your home's specifics — fuel type, climate, equipment tier, and installation complexity. Every guide includes realistic state-level planning ranges, an honest breakdown of what's included in a quote versus what surfaces as extras, and the questions that separate thorough contractors from box-swappers. Use the numbers to establish a planning budget and to sanity-check bids — then get three to four itemized in-home quotes with load calculations, because no guide can see your ductwork. The quotes, not the guides, set your final budget; the guides make sure you understand the quotes.

All HVAC cost guides (8)

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