HVAC companies in Saint Louis, MO 63121
2 HVAC companies, with local market data for this ZIP.
General contractors 6HVAC 2Other construction trades 2Excavation and demolition 1Roofing and exteriors 1
Area profitability, HVAC31 / 100Soft market, balanced field
Typical home value$91,000−0.4% in the past year
New homes permitted, 2025957St. Louis County
Homeowners51.6%10,916 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Epinger ServicesHVAC contractor · 3822 Avondale Ave, Saint Louis(314) 385-2400 · epingerservices.com
Xcell Williams Heating & CoolingHVAC contractor · 3901 Shirley Ave, Saint Louis(314) 395-9355 · williamsairquality.com
HVAC in ZIP 63121 at a glance
Local building angle: St. Louis County permitted 957 new homes in 2025, including 456 apartment units. 6% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.