Expert Emergency Air Conditioning Repair in Louisville, KY & Evansville, IN

When it’s hot and humid outside, an air conditioner failure can cause considerable discomfort and make your home feel unbearable. At A+ Derr, our team understands the critical importance of reliable cooling during the summer. Our customer support representatives are available around the clock to take your request and schedule your emergency cooling service. Our licensed and insured HVAC technicians service all major brands and maintain a comprehensive inventory of high-quality parts to diagnose the malfunction and restore your system to operation.

When your cooling system fails, contact the professionals at A+ Derr to book your emergency AC service today!

Air Conditioning Repair & Replacement

Day or night, holiday or weekend, our team is available throughout the summer to take your call and schedule your cooling service. When your system requires attention, we will pair you with a qualified technician who can assess the malfunction and complete any necessary repairs.

If a system is beyond repair—whether due to age, safety concerns, or repair costs exceeding half the price of a new unit—we can help you select the ideal replacement. We offer a full range of high-efficiency Lennox systems and complete all necessary load calculations, site prep, and installation to restore reliable comfort to your home, condo, or apartment.

Systems We Offer Emergency Services For

Our technicians have the advanced skills and up-to-date expertise to service various systems. We adhere to the highest quality standards and will provide durable repairs you can depend on.

• Central AC units: We can seal refrigerant leaks, replace damaged fan motors, clear dirty coils, replace faulty thermostats, and more.
• Ductless ACs: Our team can resolve refrigerant leaks, correct electrical malfunctions, replace faulty sensors, and more.
• Heat pumps: Our technicians can seal refrigerant leaks, replace reversing valves, thaw frozen outdoor units, replace defective capacitors, and more.

Signs You Need Emergency AC Services

There are many signs that your AC system requires repairs. Some are subtle, and others are more obvious. If you detect any of the following, we recommend scheduling service without delay:

• Diminished airflow: This can be caused by a faulty blower motor, clogged ducts, or clogged air filters.
• Short-cycling: This can be caused by faulty wiring, electrical shorts, or a system that is improperly sized for the home.
• Leaks: Blown debris, pests, accidents, and age can cause drain pans to clog or refrigerant lines to leak.
• Tripped breaker: This is often caused by improper sizing or internal electrical faults.
• Frozen coils: Frozen coils can be due to dirt accumulation on the coils, lack of refrigerant, and other issues.

Get Your Cooling Back on Track

When the heat is at its peak, waiting for relief isn’t an option. Our team is ready around the clock to handle your AC emergencies with the urgency they deserve. From quick repairs to complete system replacements, we work to restore comfort as fast as possible without cutting corners.

We’ll walk you through your options, answer your questions, and make sure you know exactly what to expect before the work begins. Whether it’s the middle of the night or the hottest day of the year, we’re here to keep your home cool and comfortable.

Call A+ Derr Heating & Cooling at 833-232-4328 or reach out online to schedule emergency AC service in Evansville, Louisville, and surrounding areas.

Choose A+ Derr for Emergency AC Services

At A+ Derr, our 24/7 service will promptly schedule an emergency AC service. Our fourth-generation family-operated company guarantees service today, or you don’t pay! We offer free estimates on service calls and replacements, our 100% satisfaction guarantee, and we’ll always deliver the value you deserve!

Contact A+ Derr today to request emergency AC services for your home!

Frequently Asked Questions

Page Updated on September 16, 2026