HVAC companies in Bay St Louis, MS 39520
2 HVAC companies, with local market data for this ZIP.
General contractors 18HVAC 2Carpentry, drywall and windows 2Electricians 1Concrete and masonry 1Excavation and demolition 1Fences and decks 1Flooring and tile 1Remodeling 1
Area profitability, HVAC58 / 100Moderate market, balanced field
Typical home value$240,000−1.3% in the past year
New homes permitted, 2025243Hancock County
Homeowners75.0%7,002 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
All Phase A/C & HeatingHVAC contractor · 415 State St, Bay St Louis(228) 363-5210 · hvaccontractorbaystlouis.com
STAY COOL Heating & Air LLCHVAC contractor · 6015 W Forrest St, Bay St Louis(228) 363-4893 · staycoolheatingair.com
HVAC in ZIP 39520 at a glance
Local building angle: Hancock County permitted 243 new homes in 2025. 48% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.