HVAC Replacement Cost in St. Louis, MO
HVAC Replacement in St. Louis, MO costs a median of $7,450, with the middle 50% of projects between $4,500 and $10,618. Based on 33,154 permits filed between January 2018 and September 2026 with City of St. Louis Department of Public Safety. Last recalculated October 1, 2026.
Sourced from 33,154 building permits on file with the City of St. Louis. Source: St. Louis Building Permits.
Types of HVAC Replacement Work in St. Louis
| Type | Typical cost | Range | Projects |
|---|---|---|---|
| AC System | $9,000 | $800 - $30,000 | 79 |
| Boiler | $15,000 | $200 - $30,000 | 61 |
| Ductwork | $11,000 | $150 - $20,550 | 15 |
| Furnace | $4,000 | $600 - $25,000 | 77 |
| Heat Pump | $7,950 | $1,000 - $25,000 | 40 |
What Most Homeowners Paid
Each bar counts the projects filed in that price range.
| Price range | Projects |
|---|---|
| $2,000 to $3,800 | 3,940 |
| $3,800 to $5,600 | 6,716 |
| $5,600 to $7,400 | 4,301 |
| $7,400 to $9,200 | 5,482 |
| $9,200 to $11,000 | 3,539 |
| $11,000 to $12,800 | 2,057 |
| $12,800 to $14,600 | 1,329 |
| $14,600 to $16,400 | 1,327 |
| $16,400 to $18,200 | 724 |
| $18,200 to $20,000 | 729 |
Featured Contractors in St. Louis
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Public record data. HomeQuotr does not alter, estimate, or interpolate permit values.
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Common Questions About HVAC Replacement Costs in St. Louis
The median hvac replacement project in St. Louis, MO costs $7,450, based on 33,154 building permits. Most projects fall between $4,500 and $10,618.
The middle 50% of hvac replacement projects in St. Louis fall between $4,500 and $10,618. Costs vary with project scope, materials, property size, and local labor rates.
This estimate is based on 33,154 building permits filed between January 2018 and September 2026 with St. Louis Building Permits.
Every price comes from building permits filed with city and county governments. When a contractor pulls a permit, they declare the project value. HomeQuotr aggregates those declared values for St. Louis. Not surveys, not estimates, not self-reported data.
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