HVAC Cost in Saint Louis, MO in 2026
Most HVAC projects in Saint Louis, MO cost between $5,000 and $16,500. The typical price is $9,000.
Labour and materials in Saint Louis run about 4% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- System size in tons and efficiency rating
- Heat pump versus furnace plus AC
- Ductwork condition and whether it is replaced
- Electrical or gas line changes
Usually included
- Equipment and refrigerant lines
- Installation, startup and commissioning
- New thermostat
- Haul-away of the old unit
Usually extra
- Duct replacement
- Electrical panel upgrades
- Permits and inspections
HVAC contractors in Saint Louis, MO
Businesses listed on Google near Saint Louis, MO. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Academy Air Heating, Cooling, Plumbing and Electric
4.8(7,396 reviews)
4848 Park 370 Blvd Ste F, Hazelwood, MO 63042
Classic Aire Care
4.9(5,594 reviews)
1276 N Warson Rd, St. Louis, MO 63132
Design Aire
4.9(2,724 reviews)
2550 Harley Dr, Maryland Heights, MO 63043
Scott-Lee Company
4.9(2,308 reviews)
11010 Gravois Industrial Ct, St. Louis, MO 63128
Rhymes Heating & Cooling
5.0(1,521 reviews)
10958 Lin Valle Dr, St. Louis, MO 63123
Dole Heating & Air Conditioning
4.9(1,369 reviews)
1920 S Broadway, St. Louis, MO 63104