Johnson Air Systems
HVAC contractor in Mechanicsville, MD 20659
About this company
Johnson Air Systems is listed as an HVAC contractor at 27763 Baptist Church Rd Unit 101 in Mechanicsville, Maryland, in St. Mary's County. It is one of 13 HVAC companies in ZIP 20659.
Other HVAC companies nearby
Cliffs Heating & Air Conditioning27763 Baptist Church Rd 101, Mechanicsville
Under 0.1 mi(301) 884-8167
HeatServ Heating & Air27635 Baptist Church Rd, Mechanicsville
0.7 mi(301) 643-5774
JKS Heating & Cooling28984 Dandelion Dr, Mechanicsville
2.2 mi(301) 884-4410
Grove & Son Hvac27010 Mechanicsville Rd, Mechanicsville
2.6 mi(240) 538-7074
Modern Aire LLC28967 Three Notch Rd, Mechanicsville
3.3 mi(240) 466-3917
Housing market around ZIP 20659
Figures describe the local area, not this company.
Typical home value$439,000+3.0% past year · +53% in 10 years
12-month value outlook+1.5%
Days to sale agreement14California metro · 17 a year ago
New homes permitted, 2025282St. Mary's County
Listings with a price cut29.1%California metro
Sale price vs list99.9%California metro
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: St. Mary's County permitted 282 new homes in 2025, including 10 apartment units. 23% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.