HVAC companies in Saint Charles, MO 63303
3 HVAC companies, with local market data for this ZIP.
General contractors 33Roofing and exteriors 16Electricians 5Fences and decks 3HVAC 3Remodeling 3Painting 2Garage doors 2Concrete and masonry 1Other construction trades 1Carpentry, drywall and windows 1
Area profitability, HVAC69 / 100Strong market, balanced field
Typical home value$356,000+2.1% in the past year
New homes permitted, 20251,661St. Charles County
Homeowners74.1%20,599 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Integrity AireHVAC contractor · 1382 Charlestown Industrial Dr, St Charles(314) 803-3664 · Integrityaire.com
Stokes Comfort Systems Heating & CoolingHVAC contractor · 2570 S Old Highway 94, St Charles(314) 582-0555 · stokeshvac.com
Blatz Mechanical LLCHVAC contractor · 2091 Exchange Dr, Saint Charles(636) 244-9155
HVAC in ZIP 63303 at a glance
Local building angle: St. Charles County permitted 1,661 new homes in 2025, including 284 apartment units. 24% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.