HVAC companies in Gaithersburg, MD 20877
14 HVAC companies, with local market data for this ZIP.
General contractors 51Roofing and exteriors 15HVAC 14Remodeling 10Electricians 5Painting 3Concrete and masonry 3Garage doors 3Fences and decks 2Flooring and tile 1Other construction trades 1Carpentry, drywall and windows 1
Area profitability, HVAC58 / 100Strong market, crowded field
Typical home value$468,000−1.9% in the past year
New homes permitted, 20251,411Montgomery County
Homeowners43.1%12,880 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Air Quality Heating & Air ConditioningHVAC contractor · 100 Tulip Dr, Gaithersburg(301) 869-6731 · airandheat.net
America's Green Heating & Air Conditioning CompanyHVAC contractor · 8543 Ziggy Ln, Gaithersburg(301) 208-0800 · aghvac.com
Bethesda Refrigeration ServicesHVAC contractor · 9016 Edgewood Dr, Gaithersburg(301) 926-8375 · bethesdarefrigerationhvac.com
Clean Air SolutionsHVAC contractor · 14 Whetstone Dr, Gaithersburg(301) 760-9515 · cleanairsolutionllc.com
DIY Comfort DepotHVAC contractor · 16021 Industrial Dr, 16021 Industrial Dr, 7, Gaithersburg(301) 615-3300 · diycomfortdepot.com
IAQ Duct ServicesHVAC contractor · 37 Shady Spring Pl, Gaithersburg(240) 858-2003 · iaqductservices.com
Metro Services HVACHVAC contractor · 30 N Summit Ave, Gaithersburg(240) 676-1804 · metroserviceshvac.com
NAC Mechanical ServicesHVAC contractor · 15800 Gaither Dr, Gaithersburg(301) 670-6300 · nacgroup.com · 2 drivers, 3 trucks
Parker Pearce Service ExpertsHVAC contractor · 16732 Oakmont Ave, Gaithersburg(301) 476-4577 · parkerpearce.com
Rod Miller Heating & Air ConditioningHVAC contractor · 211 Perry Pkwy, Gaithersburg(301) 587-1517 · rodmillerhvac.com
Santy & Son's, Inc.HVAC contractor · 8 E Diamond Ave, Gaithersburg(301) 924-1838 · santyson.com
SeasonairHVAC contractor · 16001 Industrial Dr, Gaithersburg(301) 670-4750 · colonialwebb.com · 3 drivers, 3 trucks
Sichinava Heating and Air ConditioningHVAC contractor · 396 N Summit Ave, Gaithersburg(240) 778-7621 · sichinavahvac.com
Accel Heating and CoolingHVAC contractor · 16021 Industrial Dr, Gaithersburg(301) 947-8140
HVAC in ZIP 20877 at a glance
Local building angle: Montgomery County permitted 1,411 new homes in 2025, including 559 apartment units. 28% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.