How Much Does HVAC Installation Cost in St. Louis, MO?
Cost to install a new heating and cooling system. Updated March 2026 with data from BLS, U.S. Census Bureau, and industry surveys.
Typical Cost Range
$3.915 – $8.700
-13% vs national average
$3.915$6.308$8.700
LowNational avg: $7.250High
St. Louis vs State & National Average
| Category | St. Louis | Missouri Avg | National Avg |
|---|---|---|---|
| Average cost | $6.308 | $6.355 | $7.250 |
| Low estimate | $3.915 | $4.766 | $5.438 |
| High estimate | $8.700 | $8.262 | $9.425 |
Detailed Cost Breakdown
| Item | Low | High | |
|---|---|---|---|
| Central AC unit | $2.610 | $6.090 | |
| Furnace | $2.175 | $5.220 | |
| Heat pump | $3.480 | $6.960 | |
| Ductwork modification | $870 | $2.610 | |
| Labor & installation | $1.305 | $3.045 |
HVAC Installation in Nearby Cities
Frequently Asked Questions
How much does hvac installation cost in St. Louis?
In St. Louis, MO, hvac installation typically costs between $3.915 and $8.700. The average is $6.308, which is 13% below the national average.
Is St. Louis expensive for hvac installation?
St. Louis has a cost-of-living index of 87 (100 = national average). HVAC Installation costs are 13% lower than the national average of $7.250.
What factors affect hvac installation costs in St. Louis?
Key factors include local labor costs, cost of materials, market competition, Missouri state regulations, and St. Louis's overall cost of living (index: 87/100). Prices can also vary by season and specific requirements.