Heating & Cooling Maintenance Plan in Louisville, KY & IN
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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.
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USA Membership Plans

Click here for an overview of our membership plans.

Why Become A USA Member

Regular HVAC maintenance performed by a professional is one of the best ways to ensure your heating and air conditioning systems are in peak condition! At A+ Derr, we want to make it as easy as possible for homeowners in the Evansville and Louisville areas to get the most out of their HVAC systems. That’s why we’ve created our Ultimate Savings Agreement! By signing up, you’ll receive two seasonal tune-ups for your HVAC system. Our experienced technicians will thoroughly check your system, tune up its parts, and identify any problem areas that may need repair. After a maintenance appointment with us, your heating and air conditioning systems will be running like new! *Note: plumbing services are currently only offered in our Evansville service area and its surrounding Indiana counties.

When you’re ready to sign up for an HVAC maintenance plan, call A+ Derr at 833-232-4328! You can also contact us online with any questions.

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Membership Plan

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    By submitting this form and signing up for texts, you agree to receive text messages, including appointment reminders, account notifications, review requests and/or surveys, and more from A+Derr at the number provided. Msg & data rates may apply. Msg frequency varies. Unsubscribe at any time by replying STOP and no further messages will be sent. Reply HELP for help or email us at customercare@aplusderr.com. For more information, check out our Privacy Policy and our Terms and Conditions.

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  • This field is hidden when viewing the form
    By submitting this form and signing up for texts, you agree to receive text messages, including appointment reminders, account notifications, review requests and/or surveys, and more from A+Derr at the number provided. Msg & data rates may apply. Msg frequency varies. Unsubscribe at any time by replying STOP and no further messages will be sent. Reply HELP for help or email us at customercare@aplusderr.com. For more information, check out our Privacy Policy and our Terms and Conditions.
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Extended Generator Warranty

Receive 10 Years Parts + Labor
With Installation Request Service Expires 11/30/2025Restrictions apply, call for details.
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Plumbing Safety Check + Flush

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$99 Tankless
Healthy Plumbing Starts Here Request Service Expires 11/30/2025Restrictions apply, call for details.
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Our Services

heating
Cooling
plumbing
Electrical
air quality solutions

Our Services

heating
Cooling
plumbing
Electrical
air quality solutions
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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.

Servicing All Major Makes & Models Of Equipment

We are a Lennox Premier Dealer and also service on all makes and models of equipment, including Goodman, Amana, Carrier, Trane, Rheem & more!

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.

Servicing All Major Makes & Models Of Equipment

We are a Lennox Premier Dealer and also service on all makes and models of equipment, including Goodman, Amana, Carrier, Trane, Rheem & more!

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.

ABOUT US
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Our Reviews

See What Your Neighbors Are Saying

I would recommend A+ Derr and their staff any day! Best service I have ever had! Go to them for your Heating and Cooling needs. You will not be disappointed.

Barbara C.

Barbara C.

Very good service. Knowledgeable HVAC experts always keeping us cool in the summer and warm all winter. This is a great team of professionals from start to finish.

Craig B.

Craig B.

Amazing level of courtesy and professionalism. Communication was great and the price was more than reasonable. Highly recommend.

Chip M.

Chip M.

Guys came and installed two full systems at the house. Respectful, cleaned up after themselves and answered any and all questions. Thank you again!! Definitely recommend!

Jason H.

Jason H.

Very knowledgeable and courteous. Toured me through all the functions of the new unit. Completed work very neatly and respectfully. Would recommend to anyone.

Derek S.

Derek S.

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