HVAC companies in Great Mills, MD 20634
1 HVAC companies, with local market data for this ZIP.
Area profitability, HVAC51 / 100Moderate market, balanced field
Typical home value$368,000+1.4% in the past year
New homes permitted, 2025282St. Mary's County
Homeowners65.4%2,538 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
A Better Plumber, LLCHVAC contractor · 19405 Brandon Way, Great Mills(301) 994-1000 · abetterplumberllc.com
HVAC in ZIP 20634 at a glance
Local building angle: St. Mary's County permitted 282 new homes in 2025, including 10 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.