How Much Does Furnace Replacement Cost in St. Louis, MO?
St. Louis pricing is 12% below the national average. Updated for 2026.
Based on local labor rates, varied climate conditions, and St. Louis's diversified economy.See our methodology
Furnace Replacement Pricing in St. Louis, MO
St. Louis is one of the more affordable markets for furnace replacement, with costs running about 12% below the national average. The city's diversified economy and balanced labor market create favorable conditions for competitive pricing. Getting multiple quotes from the 295K-population metro area is straightforward.
Local climate plays a direct role in furnace replacement costs here. Harsh winters and hot summers mean year-round service needs; freeze-thaw cycles affect foundations.
Market-specific factors matter in St. Louis: moderate cost of living keeps contractor rates affordable.
St. Louis has moderate permitting requirements. Depending on the scope of your furnace replacement project, you may need local permits. A licensed contractor will handle the permitting process as part of the job in most cases.
St. Louis vs National Average
What Affects Furnace Replacement Cost in St. Louis?
Fuel Type
Gas: $3,000-$6,000. Electric: $2,000-$4,500. Oil: $4,000-$7,500
Efficiency
80% AFUE: $2,500-$4,000. 95%+ AFUE: $3,500-$6,500
Size
Undersized or oversized units waste energy. Proper sizing by a pro is essential.
St. Louis Market Conditions
moderate cost of living keeps contractor rates affordable
Local Climate Impact
harsh winters and hot summers mean year-round service needs; freeze-thaw cycles affect foundations
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Top-Rated Furnace Replacement Pros in St. Louis, MO
4 providersFirst Choice Plumbing
✅ VERIFIEDHeritage Restoration
✅ VERIFIEDApex Electrical
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Tips to Save on Furnace Replacement in St. Louis
- 1.Buy during summer when HVAC companies are less busy
- 2.A 95%+ AFUE furnace costs more upfront but saves 20-30% on heating bills
- 3.Get 3+ quotes and ask about rebates
- 4.Check for utility company and federal tax incentives
📈 Furnace Replacement in St. Louis Cost Trends (2020–2024)
Prices have increased +17.8% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $3,363 | — |
| 2021 | $3,504 | +4.2% |
| 2022 | $3,732 | +6.5% |
| 2023 | $3,837 | +2.8% |
| 2024 | $3,960 | +3.2% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Furnace Replacement in St. Louis
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Frequently Asked Questions
How long does a furnace last?
Most gas furnaces last 15-20 years. Electric furnaces can last 20-30 years. Oil furnaces typically last 15-25 years.
What size furnace do I need?
A general rule is 30-60 BTUs per square foot, but climate, insulation, and home layout all factor in. A Manual J calculation gives the most accurate sizing.
Why does furnace replacement cost different in St. Louis than other cities?
St. Louis's costs reflect local labor rates driven by the diversified economy, varied climate conditions that affect materials and scheduling, and moderate permitting requirements. The balanced labor market also influences competitive pricing.
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