HVAC cost in St. Louis, MO (2026)
For a typical hvac in the St. Louis metro, mid-range typically runs $8,898. Labor here averages 12% above national trade wages, with materials at each tier's quality level and contractor overhead applied the way contractors actually bill.
Standard-tier breakdown, line by line
| Line item | Category | Typical cost |
|---|---|---|
| HVAC equipment (furnace, AC, heat pump) | Material | $4,500 |
| Ductwork and fittings | Material | $1,200 |
| Equipment installation | Labor | $788 |
| Ductwork installation | Labor | $581 |
| Refrigerant, line set, and supplies | Supplies | $400 |
| Remove existing system | Labor | $394 |
| Permits and inspection fees | Supplies | $350 |
| Old equipment disposal and refrigerant recovery | Disposal | $300 |
| Electrical connections | Labor | $234 |
| Thermostat | Material | $150 |
| Total (incl. overhead) | $8,898 |
St. Louis trade wages behind this estimate
| Trade | SOC | Median /hr | vs. national |
|---|---|---|---|
| Heating, Air Conditioning, and Refrigeration Mechanics and Installers | 49-9021 | $35.20/hr | +24% |
| Sheet Metal Workers | 47-2211 | $34.60/hr | +23% |
| Electricians | 47-2111 | $27.90/hr | −11% |
This page shows the typical range. Your project isn't typical — build the line-item estimate for your exact scope in the free iOS app.
Get Renovio for iPhoneHVACs often require permits. See what Missouri requires and who issues it.
Missouri permit guide →HVACs — what homeowners ask
A new HVAC system costs $5,000-$15,000+ depending on system type, home size, and complexity. A basic central air system costs $5,000-$8,000, a mid-range system with heat pump runs $8,000-$12,000, and a high-efficiency system with zoning can exceed $15,000.
Central air conditioners last 15-20 years, furnaces last 15-25 years, and heat pumps last 10-15 years. Regular maintenance (annual tune-ups, filter changes) can extend lifespan significantly.
HVAC sizing depends on home square footage, insulation, climate zone, and window area. A general rule is 1 ton of cooling per 500-600 sqft, but professional load calculations (Manual J) are recommended for accurate sizing.