Gas Furnace With Central Air Cost: Typical Prices and Ranges 2026

Buyers replacing or installing a gas furnace with central air typically pay between $4,500 and $12,500 depending on system size, efficiency, ductwork, and labor. This article breaks down the cost of gas furnace with central air installations, including low-average-high ranges and the main factors that drive price.

Item	Low	Average	High	Notes
Full Furnace + Condenser Install	$3,500	$7,500	$14,000	Includes standard ductwork, 60k–80k BTU furnace, 2–3 ton AC
Furnace Only (Install)	$1,800	$3,800	$6,500	New furnace, existing AC kept; mid-efficiency model
Condenser/AC Only	$1,600	$3,700	$7,200	2–3 ton split system, includes refrigerant charge
Duct Repair/Upgrade	$500	$2,200	$6,000	Minor sealing to full duct replacement

Typical Total Price For Installing a Gas Furnace With Central Air

Assumptions: Single-family home, 1,500–2,500 sq ft, standard access, Midwest labor rates.

Most homeowners pay $4,500-$12,500 for a combined gas furnace and central air installation.

Low-range $3,500 assumes a basic 60k–70k BTU furnace paired with a 2-ton AC, simple hookups, and minimal duct work. Average $7,500 represents a 80k–100k BTU furnace with a 2.5–3 ton AC, mid-efficiency (80–95% AFUE, 14–16 SEER), and moderate duct sealing. High-end $10,500-$14,000 covers high-efficiency furnaces (95%+ AFUE), 16–20 SEER AC, significant duct replacement, and difficult access or multi-story homes.

Breakdown Of The Main Quote Items And Labor Formula

Component	Materials	Labor	Equipment	Delivery/Disposal
Furnace	$700-$4,000	$400-$1,200	$50-$200	$50-$200
Air Conditioner Condenser	$900-$6,000	$500-$1,500	$100-$300	$75-$250
Ductwork / Sealing	$200-$2,500	$300-$2,000	$0-$250	$0-$150
Controls & Thermostat	$50-$600	$75-$250	$0	$0

Labor typically runs $75-$125 per hour; total labor hours for a combined install usually range from 8–24 hours.

How System Size, Efficiency, And Ductwork Change The Final Price

Larger homes and higher efficiency ratings produce the biggest price swings: every additional ton of AC adds about $900-$2,200 to equipment cost.

Specific drivers with numeric thresholds: furnace capacity — 60k–80k BTU suits ~1,200–2,000 sq ft; 90k–120k BTU for 2,000–3,500 sq ft. AC sizing — 2 ton covers ~800–1,200 sq ft, 3 ton 1,200–1,800 sq ft, 4 ton 1,800–2,800 sq ft. Efficiency brackets: 80–85% AFUE (budget), 90–95% AFUE (mid), 95%+ AFUE (high) for furnaces; 13–15 SEER (budget), 16–18 SEER (mid), 19+ SEER (premium) for AC.

Common Site Conditions And Add-Ons That Increase Pricing

Restricted access, multi-story equipment lifts, asbestos abatement, or major electrical upgrades can add $500-$4,000 or more.

Examples: straight swap with easy attic access—no extra; long duct runs or new trunk lines—$1,000-$4,500; electrical panel upgrade to support condenser—$800-$3,000; permit fees and inspections—$50-$400 depending on locality.

Practical Ways To Lower The Cost Of a Combined Furnace and Central Air Install

Controlling scope and timing cuts cost: choose mid-efficiency equipment, schedule in shoulder seasons, and fix or reuse ductwork when practical.

Specific tactics: get three written quotes and compare equipment models; bundle furnace and AC into one contractor package to reduce markup; accept a 14–16 SEER AC instead of 20 SEER to save $1,000-$3,000; perform minor drywall or access prep ahead of crew to reduce labor hours.

Regional Price Differences And What To Budget By Area

Assumptions: same equipment, similar labor skill; urban vs. rural deltas considered.

Expect about 10%-25% higher prices in coastal and high-cost cities versus the Midwest and parts of the South.

Region	Typical Range	Delta vs Midwest
Midwest	$4,000-$9,000	Baseline
South	$3,800-$8,500	-5% to 0%
West Coast	$5,000-$12,500	+15% to +40%
Northeast (urban)	$5,200-$13,000	+20% to +45%

Real-World Quote Scenarios To Expect When Shopping

Three representative quotes help translate ranges into realistic projects.

Scenario	Specs	Labor Hours	Price
Budget Swap	60k BTU furnace, 2 ton AC, reuse ducts	8–12 hours	$3,500-$5,000
Mid-Level Replacement	90k BTU furnace, 3 ton AC, duct sealing	12–18 hours	$6,500-$9,000
High-End Upgrade	110k BTU furnace 95% AFUE, 3.5 ton 18+ SEER, new trunk ducts	18–30 hours	$10,500-$14,000+

Questions That Directly Affect The Final Price

Ask installers about included warranties, expected seasonal rebates, and whether permits and final testing are part of the quoted price.

Key price-impacting questions: Is ductwork assessed and quoted separately? Are refrigerant and refrigerant recovery included? Does the quote include startup, thermostat programming, and a carbon monoxide test? Answers to these will typically change the total by $100-$1,500.