HVAC companies in Mt Airy, MD 21771
7 HVAC companies, with local market data for this ZIP.
General contractors 70Electricians 10Roofing and exteriors 8Concrete and masonry 7HVAC 7Remodeling 6Other construction trades 5Excavation and demolition 4Carpentry, drywall and windows 3Fences and decks 1Garage doors 1Painting 1
Area profitability, HVAC71 / 100Strong market, crowded field
Typical home value$626,000+0.8% in the past year
New homes permitted, 20251,168Frederick County
Homeowners94.0%10,879 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
ASC Heating & Air ConditioningHVAC contractor · 4906 Fleming Rd, Mt Airy(301) 854-6788 · aschvac.com
Exxel Mechanical ServicesHVAC contractor · 7943 Dollyhyde Rd, Mount Airy(410) 921-3829 · exxelmechanical.com
Fick's MechanicalHVAC contractor · 203 Cross St, Mt Airy(443) 340-1756 · ficksmechanical.com
Honest Air Heating & Air ConditioningHVAC contractor · 13001 Penn Shop Rd, Mount Airy(301) 943-0833 · honestairhvac.com
J M Fletcher Heating & Air Conditioning Co IncHVAC contractor · 6156 Woodville Rd, Mt Airy(301) 829-7980 · jmfletcher.com
Mathers Mechanical, LLC.HVAC contractor · 14916 Chelsea Cir, Mount Airy(240) 394-0194 · mathersmechanical.com
One Hour Air Conditioning & HeatingHVAC contractor · 2702 Back Acre Cir, Mount Airy(301) 540-1111 · onehourairmaryland.com
HVAC in ZIP 21771 at a glance
Local building angle: Frederick County permitted 1,168 new homes in 2025, including 354 apartment units. 24% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.