HVAC companies in Catonsville, MD 21228
5 HVAC companies, with local market data for this ZIP.
General contractors 36Remodeling 6HVAC 5Roofing and exteriors 5Concrete and masonry 2Painting 2Electricians 2Fences and decks 2Carpentry, drywall and windows 1Other construction trades 1Garage doors 1Flooring and tile 1
Area profitability, HVAC67 / 100Strong market, balanced field
Typical home value$425,000+1.3% in the past year
New homes permitted, 20251,531Baltimore County
Homeowners71.0%19,614 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
A-Z Heating AC & RefrigerationHVAC contractor · 1012 Leslie Ave # B, Catonsville(410) 944-4810 · azheatingac.com · 4 drivers, 1 truck
Carver Heating & CoolingHVAC contractor · 640 Frederick Rd, Catonsville(410) 621-7552 · pvairmd.com
Interclimate AC&HeatingHVAC contractor · 9 Wade Ave, Catonsville(443) 692-0159 · interclimate.us
Elkridge AC & HeaHVAC contractor · 320 STONEWALL Rd, Catonsville(410) 796-5492
The John E. Ruth Co.HVAC contractor · 5621 Old Frederick Rd, Catonsville(410) 747-0678 · 1 driver, 1 truck
HVAC in ZIP 21228 at a glance
Local building angle: Baltimore County permitted 1,531 new homes in 2025, including 379 apartment units. 9% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.