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Furnace Replacement Cost in Alton, IL
Detailed pricing guide with local market adjustments and material comparisons
Alton Average
$2,125–$5,950
Market Tier
Small City
Cost Breakdown
Furnace Replacement Cost in Alton
Small CityLowAverageHigh
$2,125$4,038$5,950
Market Tier
Small City (0.85x)
Small city with below-average costs
Material Cost Comparison
Furnace unit(Budget)
$1,594–$4,463Vent pipe(Mid-Range)
$2,125–$5,950Gas connector(Premium)
$2,975–$8,330Factors that affect your cost
- Furnace size (BTU capacity)
- Efficiency rating (AFUE)
- Gas vs electric
- Single-stage vs two-stage vs modulating
- Ductwork modifications
- Venting changes (standard vs high-efficiency)
- Permit and inspection fees
Get Quotes in Alton
Dole Heating & Air Conditioning
Saint Louis, MO
(314) 631-6900Jersey heating and cooling llc
Saint Louis, MO
(314) 906-7227Welsch Heating & Cooling
Saint Louis, MO
(314) 872-8070St Louis Heating and Cooling
Saint Louis, MO
(314) 736-3400Founding Member
Premium spot in Alton
Ambassador
Lead the Alton community
Founding Member
Premium spot in Alton
Alton Housing Market
Median Household Income
$53,005
Median Home Value
$99,500
Median Rent
$948/mo
Homeownership Rate
57.1%
Population
25,430
Median Year Built
1953
Source: U.S. Census Bureau, ACS 2023 5-Year Estimates
Track Your Costs
Replacement
Furnace Replacement
Date
April 2026
Cost
$4,038
Vendor
Your local pro
Warranty
10-year material warranty
Alton average: $2,125–$5,950
Before
Issue documented with photos
After
Repair completed, area sealed
Materials Used
Furnace unitVent pipeGas connectorCondensate line (high-efficiency)
Warranty Details
10-year material warranty
Auto-Checkup Created
"Furnace Inspection" — every 12 months
Added by youApril 2026
Property Health Score
Good
86
hvac category +18 pts(68 → 86)
Documentation19/25
Maintenance20/25
Warranty22/25
Investment21/25
Your health score is calculated based on documentation completeness, maintenance currency, warranty coverage, and investment tracking.
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Smith & Sons
ConnectedHVAC technician
4.9(47)
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JR
J&R Home Services
HVAC technician
4.7(23)
From $95/hr
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Title:HVAC tech
Category:HVAC technician
Date:2026-04-08
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Cost FAQ
What is the average cost of furnace replacement in Alton?
The average cost of furnace replacement in Alton, IL ranges from $2,125 to $5,950. The final price depends on Furnace size (BTU capacity), Efficiency rating (AFUE), Gas vs electric.
What factors affect furnace replacement cost?
Key factors include: Furnace size (BTU capacity), Efficiency rating (AFUE), Gas vs electric, Single-stage vs two-stage vs modulating, Ductwork modifications, Venting changes (standard vs high-efficiency), Permit and inspection fees. In Alton, local labor rates and material availability also influence pricing.
How do I get accurate quotes for furnace replacement in Alton?
Get at least 3 quotes from licensed professionals in Alton. Use Fizbo SmartSearch to find and compare local hvacs, read reviews, and request estimates — all in one place.