HVAC companies in O Fallon, MO 63368
4 HVAC companies, with local market data for this ZIP.
General contractors 20Roofing and exteriors 5Painting 4Electricians 4HVAC 4Remodeling 2Excavation and demolition 2Flooring and tile 1Fences and decks 1Carpentry, drywall and windows 1Other construction trades 1Concrete and masonry 1
Area profitability, HVAC72 / 100Strong market, balanced field
Typical home value$416,000+1.2% in the past year
New homes permitted, 20251,661St. Charles County
Homeowners82.0%16,948 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Lennox Stores (PartsPlus)HVAC contractor · 1306 Rustique Sq, O Fallon(636) 362-7210 · lennoxpros.com
Michael's Heating & Air ConditioningHVAC contractor · 2 Baldridge Ct, O'Fallon(636) 294-6860 · michaels-heating-air.com
Nordyne LLCHVAC contractor · 8000 Phoenix Pkwy, O Fallon(636) 561-7300 · nordyne.com
St. Louis RealtyHVAC contractor · 2315 Technology Dr Ste 129, O Fallon(636) 397-7653 · stlouisrealty.net
HVAC in ZIP 63368 at a glance
Local building angle: St. Charles County permitted 1,661 new homes in 2025, including 284 apartment units. 51% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.