Common Summer A/C Issues & Their Fixes

As temperatures rise in North Carolina, your vehicle’s air conditioning system becomes a necessity, not a luxury. At Yeargan’s Top Notch Automotive, we see a surge of customers each summer dealing with similar A/C problems. Here’s a guide to the most common summer A/C issues—and what you can do to keep your cool on the road.

Weak or Warm Airflow

The Problem: You turn on the A/C and instead of a refreshing blast of cold air, you get

a weak puff—or worse, warm air.

Common Causes:

• Low refrigerant (due to leaks)

• Clogged cabin air filter

• Faulty compressor

• Electrical issues or sensor malfunctions

How We Fix It: Our certified technicians perform an A/C performance check. This includes inspecting refrigerant levels, testing the compressor, and checking airflow through the cabin filter and vents. If a leak is detected, it is recommended that it be isolated and repaired before recharging the system.

Strange Noises When the A/C Is On

The Problem: Clicking, grinding, or squealing when the A/C kicks on? That’s a red flag.

Common Causes:

• Worn-out A/C compressor

• Loose belts or pulleys

• Debris in the blower motor

How We Fix It: We pinpoint the source of the sound and inspect all moving components. Whether it’s a compressor replacement or a simple belt adjustment, we’ll make sure your A/C runs smoothly—and quietly.

Foul Smells from the Vents

The Problem: Instead of clean, cool air, your vents blow musty or moldy-smelling air.

Common Causes:

• Mold or mildew in the evaporator

• Dirty or damp cabin air filter

• Clogged A/C drains

How We Fix It: We recommend replacing the cabin air filter and cleaning the evaporator system and A/C drains. In some cases, a disinfectant treatment or deodorizer can be applied to eliminate lingering odors.

A/C Cuts In and Out

The Problem: Your A/C works… until it doesn’t. It cycles inconsistently or shuts off completely.

Common Causes:

• Faulty pressure switch or relay

• Overheating compressor

• Electrical connection issues

How We Fix It: Our diagnostic process includes checking pressure readings, running system tests, and inspecting electrical circuits. We’ll identify the fault and recommend repair or replacement of any malfunctioning components.

Compressor Failure

The Problem: The heart of your A/C system fails—leaving you sweating in traffic.

Common Causes:

• Old age and wear

• Lack of regular service

• Contaminated or low refrigerant

How We Fix It: If the compressor has failed, we recommend a full system inspection to ensure no debris has spread through the system. A proper flush, replacement, and recharge will get you back on the road in comfort.

Stay Ahead of the Heat

At Yeargan’s Top Notch Automotive, we are offering a free basic A/C performance check and 10% off any needed A/C diagnostics, maintenance, or repairs through June 30, 2025. Whether you’re heading to the beach or commuting across town, we’ll make sure your air conditioning system is running at peak performance.

📅 Book your appointment today online or by calling us at 919-942-9009.

Don’t sweat it—trust the experts at Yeargan’s Automotive to keep you cool all summer long.