If you have a central HVAC system, it's probably happened to you. The weather outside is boiling hot, and your air conditioning can't seem to keep your house cool.HVAC System Unable to Keep Up on Hot Days a Common Complaint
After more than 20 years in the HVAC business, one of the most common complaints I've heard from homeowners, especially first time homeowners, is that their air conditioning can't keep up on very hot days. Some even insist that their HVAC system must be undersized, or it would do the job.
Unfortunately, the opposite is true. This is due to mandated area average design conditions that are built in to heat load calculations. For instance, the outdoor design temperature for Charlotte, North Carolina is 93