Request Service
Our Deals
Save On Our Services Today
Heating, Cooling & Indoor Air Quality Services in Northern Kentucky & Southern Indiana
Serving the Area for Over 50 Years
When your AC or heating system doesn’t turn on, day or night, you need an expert team you can trust for prompt and exceptional services. That’s A+ Derr Heating & Cooling! Our highly trained and experienced technicians are ready to help restore your heating, cooling, and indoor air quality systems 24/7 so your home is fully functional again. With the A+ Derr team on your side, you can rest easy knowing you can get the home services you need when you need them. We are a fourth-generation family-owned company and work hard to provide our customers with the best HVAC services and solutions for their budgets. We have served Evansville, Louisville, and the surrounding areas for over 50 years.
Contact A+ Derr Heating & Cooling online today for any HVAC or IAQ services you need in Evansville, Louisville, or the surrounding area. Schedule an appointment online or call (833) 232-4328!
Heating Services for Your Home
At the height of the winter in Kentuckiana, you need your heating system to work correctly. Our team has the expertise to get your heating system back to work quickly so you and your family can be as comfortable as possible. We offer installation, replacement, repair, and maintenance services for various heating systems, including furnaces, heat pumps, and ductless mini-splits.
Our Cooling Services
A properly functioning cooling system is essential to be comfortable in your home during the summer heat. Whether your AC needs to be repaired on the hottest day of the year, you need routine maintenance, or you want to install a new system at your Kentuckiana home, you can trust our experienced technicians at A+ Derr to handle the job efficiently and effectively. We can service traditional air conditioning units, heat pumps, and ductless mini-splits.
Indoor Air Quality Services
Your family’s health and sleep quality can be affected by contaminants and irritants from poor indoor air quality. However, installing indoor air quality systems, such as air cleaners or purifiers, can improve air quality, reducing these effects and providing clean air. A+ Derr offers indoor air quality services, including duct cleaning, ensuring your home’s air is safe for you and your family!
Call the A+ Derr team at (833) 232-4328 or contact us online for heating, cooling, or indoor air quality services in the Kentuckiana area today!

Request Service

Why Choose A+ Derr?
Your Call for Comfort!
- Unparalleled customer service
- 100% satisfaction guarantee
- Locally owned & operated
- Same-day & emergency services
- Licensed & insured
- Background-checked technicians
- Military, veteran & senior discounts
- No overtime charges