Top HVAC Service In Mount Carmel, IL | Repair & Installation
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 (877) 936-2170 to get emergency HVAC services in Louisville, KY, Evansville, IN, or the surrounding areas.
$98 System Tune up Deals & Promotions

HVAC & Indoor Air Quality in Mount Carmel

Exceptional climate control does more than keep you comfortable in extreme weather. It also reduces household humidity, minimizes mold, and improves air quality. That’s why A+ Derr is more than just an HVAC company. We strive to improve your quality of life in three core areas: comfort, budget, and energy efficiency. We repair all makes and models of HVAC systems, whether you need to dial down the heat in summer or up in winter. We offer 24/7 emergency repairs and a wallet-friendly maintenance plan to make life a little easier. We install some of the industry’s finest systems as a Lennox Premier Dealer.
Take control of your comfort by calling A+ Derr’s Mount Carmel team at (877) 914-1764 or schedule service online.

Expert Heating

We work with a wide range of HVAC brands and models. Our expertise extends to heat pumpsfurnacesductless mini-splits, and more, so we can help you track down the perfect option for your pocket. Our services include:
  • Heating repair: We’ll diagnose your symptoms correctly and ensure your repair lasts.
  • Heating installation and replacements: HVAC systems have a life span of 10 to 25 years. If your system has reached the end of its life and requires frequent repairs, we offer a 100% satisfaction guarantee for the year after your installation.
  • Heating maintenance: Your system can only perform optimally if serviced at least once a year. Our maintenance plan makes annual services easier to budget for and schedule.
Arrange a heating service with A+ Derr in Mount Carmel by calling us at (877) 914-1764.

Dependable Cooling

We have decades of experience behind us, so we’ve dealt with every air conditioning problem imaginable. We use the latest best practices and high-quality components. We offer: 

  • AC repair: If your AC is leaking, buzzing, or displaying other worrying symptoms, we’ll execute a flawless repair. If your system breaks down during an unforgiving heat wave, our 24/7 emergency team will take care of it promptly.
  • AC installation and replacement: We’re a Lennox Premier Dealer, so we can bring you industry-leading equipment and install it precisely as the manufacturer intended.
  • AC maintenance: An annual service will keep your system’s energy efficiency in top shape and extend its life span.

Indoor Air Quality Solutions

You spend most of your life indoors. Air quality can have a dramatic impact on your health. We maintain, repair, and replace humidifiers, dehumidifiers, and air purifiers. We also offer a fastidious duct cleaning service to keep your air allergen-free and your HVAC system functional.
Take your indoor air quality to new heights by contacting the Mount Carmel A+ Derr team at (877) 914-1764.

Why Choose A+ Derr?

A+ Derr has been a family-owned business for four generations, so we truly understand the importance of old-fashioned values. We strive to offer the finest solutions and products on the market. Our 100% satisfaction guarantee assures you of absolute security. We always offer prompt, trustworthy service and 24-hour emergency repairs. As an A+ BBB-accredited company with a five-star review average, we’ve proven our mettle, and that’s why our clients rate us so highly. 
Call A+ Derr’s Mount Carmel team at (877) 914-1764 for expert HVAC assistance, or schedule an appointment online.

FAQs

If your architecture makes ducts impossible, a mini-split is the perfect option for full zone control. A mini-split can also improve your air quality if you suffer from allergies. You won’t experience accumulated dust and dander with no ductwork hidden from view.

Dirty filters can reduce airflow, rendering your furnace useless, but your fuel source might also be responsible. You might have a faulty gas supply if your pilot light has gone out. Blower motors and ignition switches are equally common.

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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.

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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.

Amanda A.

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

Beverly G.

Beverly G.

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.

Vicki L.

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

Hal B.

Hal B.

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

Haley B.

Haley B.