DE Duffey & Sons Inc
HVAC contractor in East Whiteland Twp, PA 19355
About this company
DE Duffey & Sons Inc is listed as an HVAC contractor at 8 N Bacton Hill Rd in East Whiteland Twp, Pennsylvania, in Chester County. Federal motor carrier records list 7 drivers and 9 trucks for the company. It is one of 5 HVAC companies in ZIP 19355.
Other HVAC companies nearby
PJ MAC HVAC Service and Repair627 Swedesford Rd, East Whiteland Twp
0.2 mi(610) 424-6448
Chester County Fuel Oil380 Three Tun Rd, East Whiteland Twp
1.9 mi(610) 344-7234
Ervin Moser Service INC1132 Greenhill Rd, West Chester
3.1 mi(610) 430-0606
Brandywine Valley Heating & Air Conditioning Inc.302 Commerce Dr, West Whiteland Twp
3.2 mi(610) 692-3900
Entek Systems305 National Rd, Exton
3.4 mi(610) 280-9100
Housing market around ZIP 19355
Figures describe the local area, not this company.
Typical home value$786,000+2.4% past year · +65% in 10 years
Typical rent$2,549+4.6% past year
12-month value outlook+1.4%
New homes permitted, 20251,400Chester County
Days to sale agreement15Philadelphia metro · 13 a year ago
Listings with a price cut26.3%Philadelphia metro
Sale price vs list100.1%Philadelphia metro
New construction sales229Philadelphia metro, Aug · −25% 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: Chester County permitted 1,400 new homes in 2025, including 304 apartment units. 33% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.