J&K Air Conditioning
HVAC contractor in Gaithersburg, MD 20879
About this company
J&K Air Conditioning is listed as an HVAC contractor at 18775 N Frederick Ave in Gaithersburg, Maryland, in Montgomery County. It is one of 17 HVAC companies in ZIP 20879.
Other HVAC companies nearby
Boland30 W Watkins Mill Rd, Gaithersburg
1.1 mi(240) 306-3000
Clean Air Solutions14 Whetstone Dr, Gaithersburg
1.6 mi(301) 760-9515
Rod Miller Heating & Air Conditioning211 Perry Pkwy, Gaithersburg
1.7 mi(301) 587-1517
United Air Temp845 Quince Orchard Blvd Ste E, Gaithersburg
1.8 mi(410) 709-8977
J M Service Inc9905 Tambay Ct, Montgomery Village
1.9 mi(240) 443-0050
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.