Advanced Service Air Conditioning & Heating, LLC
HVAC contractor in Middletown, MD 21769
About this company
Advanced Service Air Conditioning & Heating, LLC is listed as an HVAC contractor at 1929 Mountain Church Rd in Middletown, Maryland, in Frederick County. It is one of 3 HVAC companies in ZIP 21769.
Other HVAC companies nearby
Air Doctor Heating and Air6115 Appletown Rd, Boonsboro
4.1 mi(301) 799-7200
Brake Heating and Air7097 Fern Ln, Middletown
5.0 mi(240) 674-4514
Bob Wright's Service4806 Old National Pike, Frederick
5.4 mi(301) 698-0272
Frederick Heating & Air Conditioning4801 Broad Run Rd, Jefferson
5.4 mi(240) 674-0814
South Mountain Mechanical Contractors10248 Rollingridge Ct, Myersville
5.6 mi(301) 293-9883
Housing market around ZIP 21769
Figures describe the local area, not this company.
Typical home value$558,000+0.1% past year · +58% in 10 years
Typical rent$1,824
12-month value outlook+0.2%Roughly flat
New homes permitted, 20251,168Frederick 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: Frederick County permitted 1,168 new homes in 2025, including 354 apartment units. 27% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.