Coldblast Enterprises - Durham's Expert HVAC Services

Durham's hot, humid summers force air conditioners to work harder and cycle more frequently. This constant strain, combined with high outdoor temperatures, causes the capacitor—which helps start the compressor and fan motors—to overheat and wear out prematurely. Regular maintenance from a local expert like Coldblast can identify a weakening capacitor before it fails completely on the hottest day of the year.

For most Durham homes, we recommend checking your standard 1-inch air filter every month and changing it at least every 90 days. If you have pets, allergies, or are in a newer, tightly-sealed home, you may need to change it monthly. A clogged filter restricts airflow, making your system work harder, increasing energy costs, and contributing to common issues like frozen coils or premature component failure.

Watch for warning signs like weak airflow, unusual noises (buzzing or clicking from the capacitor area is common), longer cooling cycles, or unexpected spikes in your Duke Energy bill. These are often symptoms of the local issues we see daily, such as failing capacitors or restricted airflow. Addressing them early with a call to Coldblast can prevent a minor repair from turning into a major, inconvenient breakdown.