HVAC companies in Ellicott City, MD 21043
6 HVAC companies, with local market data for this ZIP.
General contractors 18HVAC 6Roofing and exteriors 3Concrete and masonry 3Electricians 2Garage doors 2Painting 2Carpentry, drywall and windows 2Other construction trades 1Remodeling 1Flooring and tile 1
Area profitability, HVAC74 / 100Strong market, balanced field
Typical home value$627,000+0.2% in the past year
New homes permitted, 2025728Howard County
Homeowners66.9%17,246 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Enova Heating & Air Conditioning, LLCHVAC contractor · 4380 Montgomery Rd, Ellicott City(410) 253-4202 · enovaheatingairconditioning.com
Kingdom Comfort Heating & CoolingHVAC contractor · 6081 Otterbein Lane, Ellicott City(301) 200-1219 · kingdomcomforthvac.com
Maryland Heating & CoolingHVAC contractor · 4943 Roundhill Rd, Ellicott City(410) 465-0081 · maryland-heating-cooling.hub.biz
No -Frost Air Conditioning & Heating CoHVAC contractor · 4990 Waterloo Rd, Ellicott City(410) 461-6422 · no-frost.com
Strauss MechanicalHVAC contractor · 5304 E Glen Rd, Ellicott City(410) 750-9443 · straussmechanical.com
Supreme Service TodayHVAC contractor · 8585 Baltimore National Pike Unit 7, Ellicott City(410) 788-1114 · supremeservicetoday.com
HVAC in ZIP 21043 at a glance
Local building angle: Howard County permitted 728 new homes in 2025, including 379 apartment units. 34% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.