HVAC companies in Sandwich, IL 60548
4 HVAC companies, with local market data for this ZIP.
General contractors 12HVAC 4Carpentry, drywall and windows 4Remodeling 2Concrete and masonry 1Electricians 1Garage doors 1Fences and decks 1Excavation and demolition 1Roofing and exteriors 1Other construction trades 1
Area profitability, HVAC55 / 100Moderate market, crowded field
Typical home value$323,000+4.8% in the past year
New homes permitted, 2025264DeKalb County
Homeowners82.1%4,355 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
All Service Heating & Air ConditioningHVAC contractor · 900 Vincent Dr, Sandwich(630) 859-1090 · allservicehvac.com
Just In Time Heating, Air Conditioning & Plumbing ServicesHVAC contractor · 485 Duvick Ave, Sandwich(815) 570-4074 · justintimeheroes.com
Thatcher Mechanical Heating and Air ConditioningHVAC contractor · 2421 Griswold Springs Rd Unit C, Sandwich(630) 552-1609 · thatchermechanical.com
Tri-County Heating & Air CondHVAC contractor · 875 Piper Way, Sandwich(815) 786-7000 · tricountysystems.net
HVAC in ZIP 60548 at a glance
Local building angle: DeKalb County permitted 264 new homes in 2025, including 18 apartment units. 22% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.