HVAC companies in Glenwood, MD 21738
1 HVAC companies, with local market data for this ZIP.
Area profitability, HVAC74 / 100Strong market, crowded field
Typical home value$977,000+2.5% in the past year
New homes permitted, 2025728Howard County
Homeowners98.2%1,166 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Asc HVACHVAC contractor · 2720 Hobbs Rd, Glenwood(301) 854-6788 · aschvac.com
HVAC in ZIP 21738 at a glance
Local building angle: Howard County permitted 728 new homes in 2025, including 379 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.