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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.
A+ Derr Heating & Cooling Your Call For Comfort!​ Kentucky & Indiana's Heating, Cooling & IAQ Experts Deals & Financing

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0% APR For Up To 18 Months

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Our Deals

Save On Our Services Today

New Installation Tax Season Savings

Up To $2500 Off

Request Service Expires 02/28/2023
*See dealer for details
New Savings! With New Installation

Free Water Heater

Request Service Expires 02/28/2023
*Or a factory discount of equal value - see dealer for details
New Platinum Maintenance Plan

$25 OFF

Request Service Expires 02/28/2023
*See dealer for details
Furnace Tune-Up + Safety Inspection

$98

Request Service Expires 02/28/2023
*New customers qualify for a FREE smoke detector
Any IAQ Products Up To $100

10% OFF

Request Service Expires 02/28/2023
*See dealer for details
+ Free Diagnostic With Any Repair

10% OFF

Request Service Expires 02/28/2023
*See dealer for details
New Installation Tax Season Savings

Up To $2500 Off

Request Service Expires 02/28/2023
*See dealer for details
New Savings! With New Installation

Free Water Heater

Request Service Expires 02/28/2023
*Or a factory discount of equal value - see dealer for details
New Platinum Maintenance Plan

$25 OFF

Request Service Expires 02/28/2023
*See dealer for details
Furnace Tune-Up + Safety Inspection

$98

Request Service Expires 02/28/2023
*New customers qualify for a FREE smoke detector
Any IAQ Products Up To $100

10% OFF

Request Service Expires 02/28/2023
*See dealer for details
+ Free Diagnostic With Any Repair

10% OFF

Request Service Expires 02/28/2023
*See dealer for details
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.

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!

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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.

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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

Proudly Serving

Kentuckiana & The Tri-State Region

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