HVAC companies in Frederick, MD 21701
13 HVAC companies, with local market data for this ZIP.
General contractors 51Roofing and exteriors 17HVAC 13Remodeling 11Electricians 8Other construction trades 6Concrete and masonry 4Carpentry, drywall and windows 4Excavation and demolition 2Painting 2Garage doors 1Flooring and tile 1Fences and decks 1
Area profitability, HVAC59 / 100Strong market, crowded field
Typical home value$443,000−1.0% in the past year
New homes permitted, 20251,168Frederick County
Homeowners66.2%17,662 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Alexair Heating & Cooling,LLCHVAC contractor · 427 Megan Ct, Frederick(301) 302-9415 · alexairllc.com · 4 drivers, 73 trucks
BPM Heating, Cooling & PlumbingHVAC contractor · 300 E 4th St Unit A, Frederick(240) 200-0887 · bpmhvac.com
Brick Street Plumbing & HVACHVAC contractor · 47 E All Saints St, Frederick(301) 969-4911 · brickstreetplumbinghvac.com
Frederick Air, Inc.HVAC contractor · 3 King Ave, Frederick(301) 783-1992 · frederickair.com
Holtzople Heating & Air ConditioningHVAC contractor · 47 S Carroll St, Frederick(866) 500-4328 · holtzople.com
Honest Air Heating & Air ConditioningHVAC contractor · 511 N Bentz St, Frederick(240) 931-0112 · honestairhvac.com
Maryland Mechanical Services HVACHVAC contractor · 6134 Pine Crest Ln, Frederick(240) 498-0091 · mmshvacllc.com
May's Heating & Air ConditioningHVAC contractor · 8420 Gas House Pike, Frederick(301) 660-1400 · Maysheatingandac.com
Precision Heating & Cooling, Inc.HVAC contractor · 10542 Liberty Rd, Frederick(301) 898-8290 · idohvac.com · 1 driver, 1 truck
Tetteris Heating and AirHVAC contractor · 11005 Horseshoe Dr, Frederick(443) 676-8928 · tetterisheatingandair.com · 1 driver, 1 truck
Tetteris Heating and AirHVAC contractor · 11005 Horseshoe Dr, Frederick(443) 676-8928 · tetterisheatingandair.com · 1 driver, 1 truck
TriState Home ServicesHVAC contractor · 82A Wormans Mill Court, Frederick(301) 288-3655 · tristatehomeservices.com
Warner ServiceHVAC contractor · 217 Monroe Ave, Frederick(301) 200-9774 · warnerservice.com
Wenbrooke Services - AC Repair, Plumbing, Heating And ElectricalHVAC contractor · 617 W Patrick St Ste 220, Frederick(240) 847-1044 · wenbrooke.com
HVAC in ZIP 21701 at a glance
Local building angle: Frederick County permitted 1,168 new homes in 2025, including 354 apartment units. 25% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.