We are a privately held company in Wilmington, DE proudly doing business for 15 years.

Count on us when your HVAC fails Picture this - it's the middle of a cold winter night when your heater stops working. You think that you'll need to wait until at least the morning to get it fixed, but then you remember Hentkowski Inc. We're available when you need us the most, offering flexible hours and emergency appointments. No matter what's wrong with your HVAC, we'll be there in no time to get it working.