HVAC companies in Glen Arm, MD 21057
4 HVAC companies, with local market data for this ZIP.
General contractors 7HVAC 4Other construction trades 2Concrete and masonry 2Remodeling 2Garage doors 1
Area profitability, HVAC65 / 100Strong market, crowded field
Typical home value$644,000+2.6% in the past year
New homes permitted, 20251,531Baltimore County
Homeowners85.1%1,556 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
A-Team Heating and Air ConditioningHVAC contractor · 5234 Glen Arm Rd E, Glen Arm(410) 663-1330 · ATeamHVAC.com
Flanagan EnterpriseHVAC contractor · 5234 Glen Arm Rd, Glen Arm(410) 444-6922 · flanaganenterprise.com · 2 drivers, 2 trucks
S&L Prime A/C and HeatingHVAC contractor · 12076 Glen Arm Rd, Glen Arm(410) 274-4086 · snlprimehvac.com
Triad Mechanical Services, IncHVAC contractor · 12232 Long Green Pike, Glen Arm(410) 592-8081 · triad-hvac.com
HVAC in ZIP 21057 at a glance
Local building angle: Baltimore County permitted 1,531 new homes in 2025, including 379 apartment units. 8% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.