read our reviews | 4.9 
Serving Louisville and Evansville heating, cooling and air quality needs for over 45 years! Price Match Guarantee!
Expert Heating & Cooling Services
in the Evansville & Louisville Areas
Comfort is a top priority for any home or business, so when it comes to caring for your heating and air conditioning equipment, it is important to choose a qualified HVAC company. At A+ Derr Heating & Cooling, we are one of the leading heating and air conditioning specialists in Evansville, IN, Louisville, KY, and the surrounding areas. 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. Our motto is “Service Today or You Don’t Pay!” and we stand behind our work with a 100% satisfaction guarantee.
Need help with your heating or air conditioning system? Call (833) 232-4328 or contact us online to schedule HVAC service and repairs in Evansville, Owensboro, or Louisville.
Convenient & Reliable Heating & Cooling Repair Services
We are proud to offer reliable Evansville AC repair services to residential and commercial customers with fast response times and the most accurate solutions around. Our team of continually trained experts will work quickly to make a diagnosis and offer suggestions to repair or replace. You can always expect honesty from our staff, as well as upfront pricing that is free of hidden costs.
Adding additional benefit to our air conditioning repair service, we offer convenient appointment times with hard-to-find evening and Saturday appointments and no overtime charges! At A+ Derr Heating and Cooling, we understand the stress and inconvenience of a broken AC, and as a result, we do everything we can to counteract it with the utmost level of convenience and satisfaction!
Convenient & Reliable Heating & Cooling Repair Services
When you are having problems with your heating or air conditioning system, make A+ Derr your first call. We have one of the area’s largest teams of licensed and experienced HVAC service technicians, and we can provide prompt service 24/7. Our experts will evaluate your furnace or air conditioner and recommend the best heating or air conditioning repairs for your budget. If repairs are not an economical choice based on the age, condition, and efficiency of your system, we also offer heating and AC replacements. We provide reliable and long-lasting installations, and if you are not happy with your new system in a year’s time, we will buy it back!
Call (833) 232-4328 to schedule HVAC repairs or to request a quote for heating or AC replacement.
HVAC Maintenance & Indoor Air Quality Services for Evansville & Louisville Homes
When you want your furnace or air conditioner to last as long as possible, choose HVAC maintenance services from our team at A+ Derr. We will provide all the preventative maintenance your heating or air conditioning system needs for maximum comfort and reliability, and we will inspect your system carefully to spot problems before they cause a breakdown. We can also protect the indoor air quality of your Evansville or Louisville home or business with whole-home air filtration, UV air cleaners, air purifiers, and more.
Give us a call at (877) 914-1764 or reach out online to schedule HVAC maintenance or indoor air quality services in Louisville or Evansville.
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Special Offers
Choose the A+ Derr Team for All Your HVAC Needs
At A+ Derr, we have been serving Evansville, Louisville, and the surrounding areas for almost 50 years. We are a fourth-generation family-owned company, and we work hard to provide our customers with the best HVAC services and solutions for their budgets. We offer superior heating and cooling equipment, and we stand behind our products and services with a 100% satisfaction guarantee. Let our team keep your heating and cooling equipment reliable, energy-efficient, and safe.
Call (833) 232-4328 or contact us online to schedule expert heating and air conditioning services in Evansville, Louisville, Owensboro, and beyond.
What Our Customers Are Saying
“Mark came out to take care of me when the technician that had been scheduled was running behind due to unforeseen problems at the home of the client scheduled before me. My experience started with Yvette when I called for information & schedule an appointment. She was very helpful and scheduled me right away. Mark N. came to the house. He was very good w my dog! He then explained the procedure,& found an issue that could save me hassles & $$ in the future. I am very happy with my entire experience & opted for the 6-month service checkup. Thanks to all at A+Derr!”
“Dylan came today for our tune up and as usual, we are very pleased with our service.”
“Jake came and did my spring service yesterday. Their service is very professional, they are always out to get the best deals for anything I may need. I purchased new units from them a couple years ago, and the savings has been so noticeable.”
“Awesome service. They make it easy and painless to keep our new HVAC up and running at top efficiency!”
“Nicholas has always been so polite and professional.
We feel very comfortable having him in our home and know that his inspections are thorough.”
“Texal and his crew came out on time. Had 2 new systems put in. The service was great. Highly recommend.”
