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 833-232-4328 to get emergency HVAC services in Louisville, KY, Evansville, IN, or the surrounding areas.

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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 pumps, furnaces, ductless 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.

Recent Jobs and Reviews in Mount Carmel, IL

Job Locations and Reviews

Mount Carmel, IL - Successfully installed a 2-ton tankless water heater system in utility alcove. Unit was properly mounted on wall with all necessary water, gas, and electrical connections completed according to manufacturer specifications. System was tested and is functioning normally with proper temperature regulation.
Ian Hartz
Ian Hartz Checked in
Successfully installed a 2-ton tankless water heater system in utility alcove. Unit was properly mounted on wall with all necessary water, gas, and electrical connections completed according to manufacturer specifications. System was tested and is functioning normally with proper temperature regulation.
Mount Carmel, IL 62863
Mount Carmel, IL - Conducted on-site assessment for a complete HVAC system replacement. Documented current installation location and surrounding area with photos. Customer requested quote for new system options, focusing on energy-efficient "green" solutions. Will prepare detailed estimate with multiple replacement options including equipment specifications and efficiency ratings.
Danny Mercer
Danny Mercer Checked in
Conducted on-site assessment for a complete HVAC system replacement. Documented current installation location and surrounding area with photos. Customer requested quote for new system options, focusing on energy-efficient "green" solutions. Will prepare detailed estimate with multiple replacement options including equipment specifications and efficiency ratings.
Mount Carmel, IL 62863
Responded to service call for water in crawl space. Upon inspection, discovered crawl space contained significant accumulation of nesting materials and debris around plumbing infrastructure. Evaluated moisture issues and assessed potential need for sump pump installation to address ongoing water intrusion.
Responded to service call for water in crawl space. Upon inspection, discovered crawl space contained significant accumulation of nesting materials and debris around plumbing infrastructure. Evaluated moisture issues and assessed potential need for sump pump installation to address ongoing water intrusion.
Isaac Gore
Isaac Gore Checked in
Responded to service call for water in crawl space. Upon inspection, discovered crawl space contained significant accumulation of nesting materials and debris around plumbing infrastructure. Evaluated moisture issues and assessed potential need for sump pump installation to address ongoing water intrusion.
Mount Carmel, IL 62863
Responded to no heat complaint for a 6-7 year old system that was experiencing delayed ignition, loud banging noise during operation, and failure to maintain consistent heating cycles. Diagnostic inspection revealed gas pressure irregularities causing improper combustion. Adjusted gas valve settings, cleaned flame sensor and burner assembly to eliminate ignition delay and combustion issues. System now ignites properly with normal operation and consistent heat output.
Responded to no heat complaint for a 6-7 year old system that was experiencing delayed ignition, loud banging noise during operation, and failure to maintain consistent heating cycles. Diagnostic inspection revealed gas pressure irregularities causing improper combustion. Adjusted gas valve settings, cleaned flame sensor and burner assembly to eliminate ignition delay and combustion issues. System now ignites properly with normal operation and consistent heat output.
Danny Mercer
Danny Mercer Checked in
Responded to no heat complaint for a 6-7 year old system that was experiencing delayed ignition, loud banging noise during operation, and failure to maintain consistent heating cycles. Diagnostic inspection revealed gas pressure irregularities causing improper combustion. Adjusted gas valve settings, cleaned flame sensor and burner assembly to eliminate ignition delay and combustion issues. System now ignites properly with normal operation and consistent heat output.
Mount Carmel, IL 62863
Successfully installed a complete GREEN3T HVAC system with model number 18 99 DS. The installation included proper connection of the furnace unit with PVC venting and integration with the existing water heater system. All components were properly mounted, connected, and tested for optimal performance.
Successfully installed a complete GREEN3T HVAC system with model number 18 99 DS. The installation included proper connection of the furnace unit with PVC venting and integration with the existing water heater system. All components were properly mounted, connected, and tested for optimal performance.
Ian Hartz
Ian Hartz Checked in
Successfully installed a complete GREEN3T HVAC system with model number 18 99 DS. The installation included proper connection of the furnace unit with PVC venting and integration with the existing water heater system. All components were properly mounted, connected, and tested for optimal performance.
Mount Carmel, IL 62863
Inspected existing HVAC system at customer's request via Justin. Evaluation revealed aging condenser unit mounted on concrete pad showing significant rust on fan grille, weathered housing with staining, and deteriorated insulation on refrigerant lines. Interior inspection included examination of air vent/return grille placement and condition. Recommended full system replacement due to age-related deterioration and potential efficiency issues.
Inspected existing HVAC system at customer's request via Justin. Evaluation revealed aging condenser unit mounted on concrete pad showing significant rust on fan grille, weathered housing with staining, and deteriorated insulation on refrigerant lines. Interior inspection included examination of air vent/return grille placement and condition. Recommended full system replacement due to age-related deterioration and potential efficiency issues.
Justin Murtishaw
Justin Murtishaw Checked in
Inspected existing HVAC system at customer's request via Justin. Evaluation revealed aging condenser unit mounted on concrete pad showing significant rust on fan grille, weathered housing with staining, and deteriorated insulation on refrigerant lines. Interior inspection included examination of air vent/return grille placement and condition. Recommended full system replacement due to age-related deterioration and potential efficiency issues.
Mount Carmel, IL 62863
Responded to service call for 20+ year-old heating system with no operation. Diagnosed failed thermostat (no display) and significant corrosion in exhaust flue. Visual inspection revealed damaged wiring connections and deteriorated internal components. Presented repair options and provided replacement system quote as requested by homeowner due to system age and extent of deterioration.
Responded to service call for 20+ year-old heating system with no operation. Diagnosed failed thermostat (no display) and significant corrosion in exhaust flue. Visual inspection revealed damaged wiring connections and deteriorated internal components. Presented repair options and provided replacement system quote as requested by homeowner due to system age and extent of deterioration.
Justin Murtishaw
Justin Murtishaw Checked in
Responded to service call for 20+ year-old heating system with no operation. Diagnosed failed thermostat (no display) and significant corrosion in exhaust flue. Visual inspection revealed damaged wiring connections and deteriorated internal components. Presented repair options and provided replacement system quote as requested by homeowner due to system age and extent of deterioration.
Mount Carmel, IL 62863
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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

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.