About Us

Air Purification
HVAC / Air Conditioning
Water Heater

Proudly Serving Evansville IN,
Louisville KY & Surrounding Areas


Whether you need complex repairs or complete system installation, we consider it a pleasure to serve several communities throughout Kentuckiana. When you need fast, reliable, and affordable HVAC services, turn to the team at A+ Derr. A+Derr is a 4th generation family operated company that has been serving the Evansville, Newburgh, Boonville, Western Kentucky and Louisville area for nearly fifty years! A+Derr has one of the area’s largest and most responsive technician fleets.


  • Heating
  • Cooling
  • Indoor Air Quality

We offer everything from HVAC maintenance and repairs to HVAC replacements, new installations, and indoor air quality services, plus we are available 24/7 for emergency heating or cooling repairs.

A+ Derr Heating & Cooling logo
7545 Peachwood Drive, Newburgh, Indiana, United States 47630
Open 24 hours
Open 24 hours
Open 24 hours
Open 24 hours
Open 24 hours
Open 24 hours
Open 24 hours