HVAC Replacement Cost in St. Louis, MO
HVAC Replacement in St. Louis, MO costs a median of $7,200, with the middle 50% of projects between $4,395 and $10,430. Based on 31,410 permits filed between January 2018 and April 2026 with City of St. Louis Department of Public Safety. Last updated April 23, 2026.
Sourced from 31,410 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 | $8,000 | $800 - $30,000 | 63 |
| Boiler | $15,000 | $200 - $30,000 | 61 |
| Furnace | $4,000 | $600 - $25,000 | 77 |
| Heat Pump | $7,950 | $1,000 - $25,000 | 40 |
What Most Homeowners Paid
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Half of all projects cost less. Half cost more.