Mannix Heating & Cooling
HVAC contractor in Gaithersburg, MD 20879
About this company
Mannix Heating & Cooling is listed as an HVAC contractor at 7824 Beechcraft Ave in Gaithersburg, Maryland, in Montgomery County. It is one of 17 HVAC companies in ZIP 20879.
Other HVAC companies nearby
James A. Wheat and Sons7834 Beechcraft Ave, Gaithersburg
Under 0.1 mi(301) 241-9636
Parker Pearce Service Experts7901 Beechcraft Ave Ste C, Gaithersburg
0.1 mi(301) 548-9000
Bilmin Company, Inc7411 Lindbergh Dr, Gaithersburg
0.3 mi(301) 948-9040
HVAC Precision Services Inc7610 Lindbergh Dr, Gaithersburg
0.5 mi(301) 921-9300
Enviro Aire Mechanical Services7924 Queenair Dr, Gaithersburg
0.5 mi(301) 340-6050
Housing market around ZIP 20879
Figures describe the local area, not this company.
Typical home value$433,000−1.6% past year · +49% in 10 years
Typical rent$1,995+2.9% past year
12-month value outlook+0.2%Roughly flat
New homes permitted, 20251,411Montgomery County
Days to sale agreement19Washington metro · 17 a year ago
Listings with a price cut29.4%Washington metro
Sale price vs list99.7%Washington metro
New construction sales489Washington metro, Aug · −24% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: Montgomery County permitted 1,411 new homes in 2025, including 559 apartment units. 14% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.