HVAC companies in Essex, MD 21221
11 HVAC companies, with local market data for this ZIP.
General contractors 42HVAC 11Roofing and exteriors 10Remodeling 5Electricians 5Other construction trades 2Concrete and masonry 2Fences and decks 2Flooring and tile 2Garage doors 1Painting 1
Area profitability, HVAC45 / 100Moderate market, crowded field
Typical home value$290,000+0.1% in the past year
New homes permitted, 20251,531Baltimore County
Homeowners62.5%17,143 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Aireco SupplyHVAC contractor · 8515 Kelso Dr, Essex(410) 931-4807 · aireco.com
Albright's Mechanical ServicesHVAC contractor · 11 S Marlyn Ave, Essex(410) 834-0148 · albrightsmechanical.com · 1 driver
Liberty Oil Company, Inc.HVAC contractor · 1401 E Homberg Ave, Essex(410) 686-6400 · libertyoil.net · 6 drivers, 9 trucks
Maryland Heating & Air LLCHVAC contractor · 1 Mace Ave, Essex(855) 410-8324 · marylandhvacr.com
Modern Air Conditioning & Heating, Inc.HVAC contractor · 627 Eastern Blvd, Essex(443) 316-1139 · modernairmd.com
Modern ComfortHVAC contractor · 1401 E Homberg Ave, Essex(410) 876-2200 · moderncomfortsystems.com · 10 drivers, 6 trucks
Paramount Heating and Air ConditioningHVAC contractor · 4 Nashua Ct, Essex(410) 650-4031 · paramounthvac.com
R E Michel Co.HVAC contractor · 6 Nashua Ct, Essex(410) 574-1777 · remichel.com
SM Mechanical LLCHVAC contractor · 7110 Golden Ring Rd, Essex(443) 559-5314 · smmechanicalhvac.com
Contemporary Air Systems, Inc.HVAC contractor · 613 Eastern Blvd, Essex(410) 391-3070
General Heating & Cooling IncHVAC contractor · Baltimore(410) 574-6586 · 8 drivers, 5 trucks
HVAC in ZIP 21221 at a glance
Local building angle: Baltimore County permitted 1,531 new homes in 2025, including 379 apartment units. 12% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.