How much does a furnace replacement cost in Frankfort, IL?
US national rangeUpdated Prices checked October 20261 source
A furnace replacement costs $2,823 to $6,896 nationally, typical $4,814. We have no documented price index for Frankfort for this job, so this is the US national range from HomeAdvisor, checked October 2026.
US national range, not adjusted for this city
- Low
- $2,823
- Typical
- $4,814
- High
- $6,896
Furnace replacement cost in Frankfort, IL
We have no documented price index for Frankfort for this job, so the table shows the US national range.
| Estimate | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| US national range | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs (HomeAdvisor) | October 2026 |
Furnace replacement cost by type or size
US national figures in USD, as published by each source.
| Type or size | Price (USD) | Source |
|---|---|---|
| Electric furnace | $2,000 to $7,000 | HomeAdvisor |
| Gas furnace | $3,800 to $10,000 | HomeAdvisor |
| Oil furnace | $6,750 to $10,000 | HomeAdvisor |
What drives the cost of a furnace replacement
Fuel type
Electric furnaces cost least to install; oil costs the most.
Efficiency rating
High-AFUE furnaces cost more up front.
Home size
Furnaces are sized at roughly 30 to 60 BTUs per square foot.
Climate
Colder regions need more capacity.
Removal of the old unit
Removal and disposal typically add $150 to $330.
Permits and what's included in Frankfort
Permit note
Furnace replacement usually needs a mechanical permit, and gas work may need its own. Ask your local building department for the fee.
Rules are set locally; confirm with Frankfort’s building department.
What’s usually included
- The new furnace
- Connection to existing ducts, venting and fuel supply
- Startup and testing
Scopes vary. Get the scope in writing on every quote.
Get furnace replacement quotes in Frankfort
Tell us about the job and we will pass it to local pros. Asking for quotes never changes how we rank anyone.
Two short steps: your name, then how to reach you. Free, and it never changes anyone’s rank.
Top-ranked HVAC contractors in Frankfort
The top 3 of 765 HVAC contractors we rank for Frankfort, IL, by CR Score. Paid placement never changes rank.
- #1TR Miller Heating, Cooling, Plumbing and ElectricalCR Score 644.9from 2,423 Google reviews
- #2King Heating, Cooling & PlumbingCR Score 644.8from 1,060 Google reviews
- #3Air Source 1 Heating & Air ConditioningCR Score 635.0from 664 Google reviews
Furnace replacement cost in Frankfort: questions
How much does a furnace replacement cost in Frankfort, IL?
Do I need a permit for a furnace replacement in Frankfort?
What affects the cost of a furnace replacement?
How many HVAC contractors serve Frankfort?
What is usually included in the price?
Sources
Checked October 2026. Figures are estimates, not quotes.
- HomeAdvisor: Furnace replacement cost · page updated June 17, 2026 · checked October 2026Primary source. Used for: Low, typical and high; prices by fuel; drivers.
Related pages
More cost guides for Frankfort
- Roof replacement cost in Frankfort
- Roof repair cost in Frankfort
- Water heater replacement cost in Frankfort
- AC replacement cost in Frankfort
- Electrical panel upgrade cost in Frankfort
- Interior painting cost in Frankfort
- Exterior painting cost in Frankfort
- Kitchen remodel cost in Frankfort
- Bathroom remodel cost in Frankfort
- Hardwood floor installation cost in Frankfort
- Fence installation cost in Frankfort
- Deck building cost in Frankfort
- Siding replacement cost in Frankfort
- Window replacement cost in Frankfort
- Gutter installation cost in Frankfort
- Attic insulation cost in Frankfort
- Solar panel installation cost in Frankfort
- Garage door repair cost in Frankfort
- Foundation repair cost in Frankfort
- Tree removal cost in Frankfort
- Water damage restoration cost in Frankfort
- Concrete driveway cost in Frankfort
- Drywall repair cost in Frankfort