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.

Call Today 833-232-4328 Schedule Online
SAVE $2,026 On New HVAC Systems
Limited Time Offer
Request Service

Reliable AC Maintenance Services in Evansville, IN & Louisville, KY

Having any household appliance tuned up by a professional is key, and this goes for your AC unit as well. Without proper maintenance, your unit can be met with enough wear and tear that may lead to the need for a repair — or worse — a complete replacement! At A+ Derr Heating & Cooling, we offer comprehensive AC maintenance services designed to keep your unit in check and working to the best of its ability.

Ensure your AC unit is up for the challenge of keeping you and your home cool and comfortable throughout the warmer seasons! Call A+ Derr to schedule your tune-up in Kentuckiana.

Measuring refrigerant pressure with manifold gauge

Keeping Your AC Reliable All Season Long

Regular air conditioning maintenance isn’t just about preventing breakdowns—it’s about making sure your system delivers consistent comfort when you need it most. In Evansville, Louisville, and throughout Kentuckiana, summer weather can push an AC to work harder than at any other time of year. A unit that’s been properly cared for is far less likely to quit on a hot day and is more likely to run efficiently, saving you money on energy costs.

When you schedule service with a trusted local company, you’re getting more than just a quick checkup. A trained technician can spot early signs of wear, clean and adjust components for optimal performance, and confirm your system is running safely. These small steps can add years to the life of your equipment, help keep indoor air clean, and maintain steady cooling even in extreme heat.

Whether you’re preparing for the season ahead or want the peace of mind that comes with a professionally inspected system, investing in maintenance is one of the simplest ways to protect your comfort. With decades of experience serving the community, A+ Derr has the knowledge and commitment to keep your AC performing at its best year after year.

What A+ Derr Checks For During Tune-Ups

At A+ Derr Heating & Cooling, our maintenance services are designed to keep your system performing at its best with thorough inspections, performance testing, and preventative care. Annual tune-ups can help extend your unit’s lifespan and improve efficiency, helping you stay comfortable while avoiding costly repairs.

The maintenance services at A+ Derr were developed to ensure your AC unit will not fail you when you need it the most. These services tackle a number of tasks, including:

  • Checking refrigerant levels
  • Tightening system components
  • Recalibrating the thermostat
  • Lubricating parts as necessary
  • Checking for leaks
  • Running tests to gauge overall performance
  • And more

Benefits Of Getting Your AC Unit Tuned Up

There are several benefits one can enjoy from having their AC unit regularly maintained. Our maintenance services are designed to keep things with your unit working well, and when you decide to work with us, you can experience the following benefits:

  • An extended unit lifespan
  • Increased energy efficiency
  • Heightened performance
  • Lessened risk of breakdowns
  • Lowered monthly operating costs
  • And more!

How Much Longer Can Annual Tune-Ups Extend An AC Unit’s Life Span?

On average, your AC unit will last around 10 to 15 years; however, this number depends on how well it is cared for! Should you stay on top of regular maintenance, your unit will likely survive closer to 15 years, and, in some cases, properly cared for units can last up to 20 years. Maintenance services aim to keep all of your unit’s many components under control, therefore increasing its efficiency and ultimately extending its life.

Can Regular Tune-Ups Help Lower My Electricity Bill?

A comprehensive tune-up includes checking for common issues that can cause energy waste, including refrigerant leaks, a failing blower motor, or dirty coils. When every component is clean and working as it should, and your thermostat is properly calibrated, your AC is ready to operate at optimal efficiency. Keeping your AC well-maintained can help lower your summer electric bill by as much as 15%.

Sign Up For A Maintenance Plan

A+ Derr offers our Ultimate Savings Agreement to make maintenance as easy as possible! By signing up, you’ll receive two yearly HVAC maintenance checks, plus plenty of other benefits. You can enjoy discounts on repairs, priority service, and more.

Why You Should Choose A+ Derr For Exceptional AC Maintenance

A+ Derr Heating & Cooling has delivered excellent AC maintenance services to our community since 1975. Our fourth-generation family-operated company aims to achieve 100% satisfaction, and the well-being and comfort of our clients are our first priority. We also proudly offer 24/7 emergency services alongside free estimates on replacement quotes and service calls!

Make sure your AC unit is ready to go with maintenance services from A+ Derr! Call or contact us online to set up an appointment.

Scheduling AC maintenance before the warmer seasons hit is the best time; doing so will ensure your unit is in its best shape and won’t fail you when you need it the most.

A good rule of thumb is to schedule AC maintenance annually; however, some experts recommend having your unit tuned up every six months for full efficiency.

Yes, having your AC professionally maintained every 12 months can help you save as much as 15% off your electric bill and reduce wear and tear on your unit, adding years to its useful lifespan. You can enjoy even more savings with a maintenance plan. 

Start Saving Today With

Membership Perks

Start Saving Today With

Membership Perks

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.

Review Image
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.