HVAC companies in La Plata, MD 20646
3 HVAC companies, with local market data for this ZIP.
General contractors 27Roofing and exteriors 4Concrete and masonry 3Remodeling 3Excavation and demolition 3HVAC 3Electricians 2Other construction trades 2Garage doors 2Fences and decks 1
Area profitability, HVAC67 / 100Strong market, balanced field
Typical home value$473,000−0.6% in the past year
New homes permitted, 2025935Charles County
Homeowners86.5%7,657 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
On Q ServicesHVAC contractor · 100 Centennial St, La Plata(240) 412-5585 · onqservicesllc.com
Preferred Mechanical SolutionHVAC contractor · 402 Hickory Cir, La Plata(301) 392-9800 · preferred-mechanical.com
SMO EnergyHVAC contractor · 109 N Maple Ave, La Plata(888) 222-3720 · smoenergy.com
HVAC in ZIP 20646 at a glance
Local building angle: Charles County permitted 935 new homes in 2025. 28% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.