HVAC companies in Wilmington, DE 19802
1 HVAC companies, with local market data for this ZIP.
General contractors 13Concrete and masonry 2Electricians 1Roofing and exteriors 1Excavation and demolition 1Garage doors 1Other construction trades 1HVAC 1
Area profitability, HVAC43 / 100Soft market, balanced field
Typical home value$199,000−2.8% in the past year
New homes permitted, 20251,322New Castle County
Homeowners48.5%10,504 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
William G Day CompanyHVAC contractor · 1603 Jessup St, Wilmington(302) 476-2808 · williamgdayco.com
HVAC in ZIP 19802 at a glance
Local building angle: New Castle County permitted 1,322 new homes in 2025, including 188 apartment units. 9% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.