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New Furnace Cost in Oklahoma

Typical range: $3,800-$8,500 · Most common: $4,800-$6,500

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A new gas furnace in Oklahoma typically runs $3,800-$8,500 installed. The biggest factor is efficiency tier — 80% AFUE versus 95%+ AFUE makes a real cost difference both upfront and on your gas bill. Here is what to expect.

Detailed Pricing Breakdown

Service / PartCost Range
80% AFUE — single-stage (basic)
Simple, reliable, vents through traditional chimney/flue. Best choice if you want to keep existing venting.		$3,800-$5,000
90-95% AFUE — single-stage (high-efficiency)
Condensing furnace that vents through PVC. Requires new venting work but saves ~15% on gas bills.		$5,000-$6,500
96%+ AFUE — two-stage
Better comfort (modulates output), quieter, best efficiency. Often worth the premium on larger homes.		$6,500-$8,000
96%+ AFUE — variable speed (premium)
Continuously variable output for the best comfort and lowest noise. Best for homes with comfort issues.		$7,500-$8,500
Add: new ductwork modifications
If existing ducts are undersized for the new system.		+$500-$2,500
Add: gas line resizing
New high-efficiency furnaces sometimes need larger gas line.		+$300-$800
Add: new venting (PVC for condensing units)
Required when going from 80% to 90%+ AFUE.		+$400-$900
Add: new electrical/breaker work
Older homes sometimes need an upgraded circuit.		+$200-$500

All prices are for the OKC metro area. Actual quote may vary based on your specific situation.

What Pushes Cost Up

  • Larger BTU output for bigger homes
  • High-efficiency (95%+ AFUE) tier
  • Variable-speed equipment
  • Premium brand (Trane, Carrier, Lennox)
  • Difficult equipment location
  • Concurrent ductwork or venting work

What Lowers Cost

  • Small home with low BTU requirement
  • 80% AFUE basic tier
  • Standard single-stage operation
  • Mid-tier brand (Goodman, Rheem)
  • Existing venting compatible

Why Get a Free In-Home Estimate

The ranges on this page are honest, but every home is different. A free in-home estimate gives you a firm quote based on your actual equipment, home size, ductwork condition, and electrical setup. We perform proper load calculations rather than ballpark guesses, and we give you 2-3 options at different price points so you can choose what fits your budget.

No pressure, no upselling, no surprise add-ons after the work starts. ARP Heat And Air is licensed (OK CIB #00125054), insured, and

Pricing by Scenario

Typical pricing for common OKC-metro situations. Exact pricing depends on your specific home and system.

ScenarioTypical Range
80% AFUE single-stage (budget)
Basic reliable furnace — good for mild climates		 $2,500 – $4,500
90% AFUE single-stage (standard)
Good efficiency, reasonable price		 $3,500 – $5,000
95%+ AFUE two-stage (popular)
Best value for Oklahoma winters		 $4,500 – $6,000
96-98% AFUE modulating variable-speed
Premium tier — highest efficiency		 $5,500 – $7,500
Complete replacement with new ductwork
95% furnace + full duct rework		 $8,000 – $12,000

Frequently Asked Questions

What's the best furnace efficiency for Oklahoma?
For OKC-metro homes, 95%+ AFUE two-stage is the sweet spot. Oklahoma winters aren't extreme enough to justify the premium for 98% modulating in most homes, but the efficiency step from 80% to 95% pays back quickly in gas savings.
Can I put a new furnace on old ductwork?
Usually yes, if the ductwork is properly sized and in good condition. New high-efficiency furnaces have specific airflow requirements — we verify static pressure and return sizing before installing to make sure the match works.
Do I need to vent the new furnace differently?
90%+ AFUE furnaces use sealed combustion with PVC venting rather than metal flue. If you're upgrading from an 80% unit, we install new PVC intake and exhaust runs. 95%+ units require a condensate drain as well.
What about ONG rebates on new furnaces?
Oklahoma Natural Gas offers rebates up to $2,500 for qualifying 95%+ AFUE gas furnaces. We identify eligible rebates at estimate time and handle the paperwork. See our full rebates page for current amounts.
How long does furnace installation take?
Standard furnace replacement: one day. Installations requiring new venting, new gas lines, or ductwork modifications: can extend to two days.

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