Most homeowners pay $7,000-$12,500 to replace a gas furnace and central air conditioner together; cost depends on system size, efficiency, and labor. This article breaks down the combined replacement cost and the main drivers for gas furnace and AC replacement cost so homeowners can budget accurately.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Complete Furnace + AC Replace | $5,500 | $9,000 | $15,000 | Typical single-family home, 2.5-3.5 ton system |
| Furnace Only | $2,000 | $3,800 | $6,500 | 80%-98% AFUE, includes basic hookup |
| AC Condenser Only | $2,000 | $4,200 | $7,500 | 1.5-5 ton, 13-20 SEER |
| Install Labor | $800 | $2,000 | $4,500 | Regional variation, complexity |
| Permit & Misc | $150 | $450 | $1,200 | Permits, disposal, minor duct work |
Typical Total Price For Replacing Furnace And Central AC
Replacing both systems together commonly totals $7,000-$12,500 for a 2.5-3.5 ton matched system with mid-efficiency equipment and standard labor in suburban areas.
Bundling furnace and AC replacement usually lowers per-unit labor and simplifies duct and control matching, reducing combined cost by 5%-15% versus separate installs.Assumptions: 2.5-3.5 ton, 80-96% AFUE furnace, 14-16 SEER AC, normal access.
Breakdown Of Major Quote Components For Furnace + AC Replacement
| Materials | Labor | Equipment | Permits | Delivery/Disposal |
|---|---|---|---|---|
| $2,300-$7,000 (furnace, coil, condensing unit) | $800-$3,500 () | $200-$1,500 (tools, refrigerant recovery) | $100-$800 | $50-$600 |
Material choice and contractor labor time are the largest single line items in an HVAC replacement quote.
How System Size And Efficiency Change The Final Price
System tonnage and efficiency ratings shift prices: 2 ton to 5 ton ranges and AFUE/SEER brackets affect equipment cost and permit needs.
Expect equipment price jumps of about $600-$1,200 per ton and $700-$2,500 extra for upgrading from 14 SEER to 18-20 SEER.Example thresholds: 2.0-2.5 ton, 2.5-3.5 ton, 3.5-5.0 ton; AFUE 80%-83% vs 95%-98%.
Site Conditions And Ductwork That Increase Quotes
Changes like extensive duct repair, long refrigerant lines, 2nd-story condenser placement, or cramped furnace closets add labor and materials.
Large duct modifications typically add $1,200-$5,000; a long-run refrigerant line set can add $300-$1,200 if beyond 40 linear feet.Thresholds: duct runs >50 linear ft, additional plenums, attic or crawlspace access difficulty.
Practical Ways To Lower Replacement Price On Furnace And AC
Control scope by replacing matched components only when necessary, choose mid-efficiency models, schedule installs in shoulder seasons, and obtain multiple quotes.
Saving tactics: replace both systems together to save labor, accept a 14-15 SEER unit instead of 18+ SEER to save $1,000-$3,000, and provide clear access to reduce labor hours.
Regional Price Differences And What To Expect In Your Area
Prices vary by region: Northeast and West Coast often run 10%-25% higher than Midwest and South due to labor and permit costs.
| Region | Typical Delta | Average Combined Price |
|---|---|---|
| Midwest | Baseline | $7,000-$10,000 |
| South | -5% to 0% | $6,800-$9,500 |
| Northeast | +10% to +20% | $8,000-$12,000 |
| West Coast | +15% to +25% | $8,500-$13,500 |
Expect the highest dealer and permit-related charges in expensive metro markets; rural installs may be cheaper but could include travel fees.
Typical Job Duration, Crew Size, And Labor Rates
Most combined replacements take 10-16 hours of labor with a 2-3 person crew; smaller jobs can be done in one day, complex jobs need 2+ days.
Budget labor at $75-$125 per hour per tech; a common labor subtotal is $800-$2,500 depending on complexity.Assumptions: one-day installs = 10-12 hours, complex = 16-24 hours.
Common Add-Ons And Extra Fees That Affect Final Price
Add-ons include zoning dampers ($300-$1,200 per zone), new thermostat upgrades ($150-$600), refrigerant recharges ($150-$500), and safety/combustion testing ($100-$300).
Account for potential extras: expect $400-$2,000 in reasonable contingency for unforeseen repairs once old equipment is opened up.