24/7 Air Conditioning Services In KY & IN | AC Repair
24/7 Emergency Service
HVAC emergencies happen when you least expect them. Contact the professionals at A+ Derr to take care of your issue. We have the necessary skills and tools to fix your system so you can safely use it once again. Call our team at (833) 232-4328 to get emergency HVAC services in Louisville, KY, Evansville, IN, or the surrounding areas.
$98 Furnace Tune Up + Safety Inspection Deals & Financing

Dependable AC Installation and Repair Service in Evansville & Louisville

Your home is the place that you should feel the most comfortable in, but when your air conditioning stops working, it can quickly lead to an uncomfortable environment. When that happens, it’s time to call in the experts at A+ Derr, who can help with any cooling system issues that you might be having.

Having problems with your air conditioning? Give us a call at (833) 232-4328 or contact us online!

AC Installation, Repair & Maintenance Services

Whether you need help with installing an entirely new air conditioner, repairing the one you currently have, or simply having a routine maintenance check scheduled, our team is ready and able to help.

How To Tell if Your AC Unit Needs To Be Repaired or Replaced

The best way to tell if your air conditioning needs to be repaired or replaced is to have one of our skilled professionals take a look, but there are some signs you can be on the lookout for at home, such as:

  • Your air conditioning blowing out warm air
  • The thermostat not working
  • Strange noises coming from the AC unit
  • Odd smells coming from the AC unit

Want to schedule an inspection with one of our technicians? Call us at (833) 232-4328 or schedule an appointment online!

A+ Derr Is a Lennox Premier Dealer

Lennox Premier Dealer logo

At A+ Derr, we believe in providing you with the best air conditioning products in the market. That’s why we are proud to be a Lennox Premier Dealer! As a Premier Dealer, we have access to top-of-the-line AC products so that you can benefit from their enhanced cooling power. Lennox systems are energy-efficient, powerful, and reliable.

To learn more about Lennox products or to schedule an air conditioner replacement, contact A+ Derr at (833) 232-4328.

24/7 Repair Service Available

We know that your air conditioning doesn’t always break during convenient business hours, so we offer 24/7 repair services. Whenever your AC breaks, one of our team members will be here to take your call!

Benefits of System Maintenance

Having a yearly system maintenance check performed on your air conditioning system helps to identify problems with your system that could become larger issues later. This will protect you against a broken AC and will also save you money on costly repairs later on down the line.

Frequently Asked AC Questions

If your unit is older than 10 years old, it is a good time to start at least considering purchasing a new air conditioning unit.

SEER stands for Seasonal Energy Efficiency Rating and will tell you how energy-efficient your unit is — the higher the SEER number on your unit, the more efficient the unit is.

The cost of a new HVAC or air conditioning system depends on your home and comfort needs. To get you the most accurate cost, please schedule an appointment with one of our comfort advisers. All estimates are free of charge and will ensure you are getting a precise and accurate price. Furthermore, with our 0% financing, we have actually seen AC and HVAC systems pay for themselves.

To calculate the appropriate HVAC system size, we would need to schedule one of our comfort advisers to visit your home. Square footage, windows, insulation and ceiling height are just a few of the relevant items that will determine the type of AC system you need.

Why Choose A+ Derr?

A+ Derr has been proudly serving Evansville and Louisville for almost 50 years and has unsurpassed customer service. You can count on us for free estimates on our replacement quotes and 100% satisfaction guarantee on any product installed by us within the first year.

When you need air conditioning repairs, maintenance, or installations, call the A+ Derr team at (833) 232-4328 or contact us online!

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What To Expect

Discover The A+ Derr Difference

24/7 Heating & Cooling Repairs​

Heating and cooling emergencies can happen on nights, weekends, and holidays, so you can trust us to be there no matter when you need us.

Licensed & Experienced Technicians​

Our experts have the expertise and training to deliver the highest quality services every time.

100% Satisfaction Guarantee​

Our team is dedicated to ensuring your 100% satisfaction with every HVAC service we perform.

Superior Heating & Cooling Equipment​

We provide unmatched HVAC services using only the highest quality parts and equipment for our customers.

Locally Owned & Operated​

Since we’re based in Kentuckiana, we know the needs of Evansville, Louisville, and surrounding communities.

50+ Years in Business​

For over 50 years, A+ Derr has provided high-quality service, products, and results for Kentuckiana's residents.

24/7 Heating & Cooling Repairs​

Heating and cooling emergencies can happen on nights, weekends, and holidays, so you can trust us to be there no matter when you need us.

Licensed & Experienced Technicians​

Our experts have the expertise and training to deliver the highest quality services every time.

100% Satisfaction Guarantee​

Our team is dedicated to ensuring your 100% satisfaction with every HVAC service we perform.

Superior Heating & Cooling Equipment​

We provide unmatched HVAC services using only the highest quality parts and equipment for our customers.

Locally Owned & Operated​

Since we’re based in Kentuckiana, we know the needs of Evansville, Louisville, and surrounding communities.

50+ Years in Business​

For over 50 years, A+ Derr has provided high-quality service, products, and results for Kentuckiana's residents.

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Our Reviews

See What Your Neighbors Are Saying

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.

Amanda A.

Dylan came today for our tune up and as usual, we are very pleased with our service.

Haley B.

Awesome service. They make it easy and painless to keep our new HVAC up and running at top efficiency!

Hal B.

Nicholas has always been so polite and professional. We feel very comfortable having him in our home and know that his inspections are thorough.

Vicki L.

Texal and his crew came out on time. Had 2 new systems put in. The service was great. Highly recommend.

Beverly G.