September 4, 2026
Kevin Haas arrived around 3:00 PM to troubleshoot our split unit in the music room. He found the problem but time didn’t allow him to correct the problem which I understand. He was very courteous and knowledgeable and answered all my questions.
I called after noon and got service the same day which was great. Hopefully they can finish by next Tuesday.
I was not charged for the service today since the unit is in warranty.
February 18, 2026
Brent Delano was here yesterday. I was very satisfied with his performance. He was friendly and courteous and did the best he could to correct the problem I had with work performed by A+ Derr a few months ago. Thanks… read full review
About A+ Derr Heating & Cooling
A+ Derr Heating & Cooling is a local business specializing in heating, air conditioning, heat pumps, and furnace installations for homes and businesses. They are known for providing reliable, high-quality service at an affordable price. Customers appreciate their fast response times and trained, qualified technicians who thoroughly address any heating or cooling concerns. The company prides itself on completing installations correctly the first time, minimizing disruption for customers.
Reviewers have praised the professionalism and friendliness of the technicians, who go the extra mile to explain systems, answer questions, and ensure customer satisfaction. One customer highlighted the technician's expertise in identifying and resolving a hidden issue, ultimately saving them money on energy costs. Another customer expressed appreciation for the meticulous installation process and the technicians' willingness to go above and beyond to address any concerns. Recent reviews also mention the respectful and thorough approach of the staff, with one customer noting that the technician made sure they understood everything before proceeding with a purchase. Customers have described their experiences as great from estimate to installation, with some emphasizing how the team worked hard under extreme temperatures without sacrificing quality.
In a particularly urgent situation, the crew responded quickly to a broken HVAC system in the middle of the night, installing a new system within 12 hours, and even providing a borrowed window unit for immediate relief. The speedy installation and clear instructions left customers very satisfied and eager to recommend A+ Derr Heating & Cooling for all cooling and heating needs.
Reviews
At 4am I woke up because the bedroom was hot. Realized the A/C had stopped working. Called the A+Derr 24 hour number and booked an appointment for the same day via the AI attendant. By 10a our A/C was working again. Danny arrived, replaced the capacitor and tested the system. Much appreciated given that we are under an extreme heat advisory.
Our technician was amazing! He answered all my questions making sure I understood everything! He took his time and fixed my door that was not staying lached when the before it wasn't fixed. Highly recommend, they have been great so far!!
Photos

Hours
Good to know
- online estimates
- on-site services
- accepts credit cards
- offers military discount
Location
7545 Peachwood Dr, Newburgh, IN 47630
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