2026 local pricing guide for hvac installation in Saint Louis, MO with cost breakdowns and provider data.
Saint Louis, MO Average
$4,400 – $10,560
Most homeowners pay around $7,480
Low
$4,400
Typical
$7,480
High
$10,560
Based on national averages adjusted for MO cost of living (-12% vs. national average).
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| Project Type | Low | Typical | High |
|---|---|---|---|
| Central AC Install | $3,080 | $4,840 | $7,040 |
| Furnace Install | $2,200 | $3,520 | $5,720 |
| Heat Pump Install | $3,520 | $5,720 | $8,800 |
| Ductless Mini-Split | $1,760 | $3,520 | $6,160 |
| Full HVAC System (AC + Furnace) | $4,400 | $7,920 | $12,320 |
| Duct Installation/Replacement | $1,760 | $3,960 | $7,040 |
Prices adjusted for Saint Louis, MO cost of living. Actual costs may vary. Get multiple quotes for accurate pricing.
HVAC Installation in Saint Louis, MO typically costs $4,400 to $10,560, with most homeowners paying around $7,480. Costs vary based on project scope, materials, and the contractor you hire.
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A straightforward replacement takes 1 to 2 days. New installations with ductwork take 3 to 5 days. Complex projects with zoning systems may take a full week.
Air conditioners and heat pumps last 15 to 20 years. Furnaces last 15 to 25 years. Regular maintenance extends system life and keeps efficiency high.
The minimum SEER2 rating is now 14-15 depending on region. 16-18 SEER offers a good balance of efficiency and cost. 20+ SEER units save the most on energy but have higher upfront costs.
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