Question 1

What is the cheapest temperature to set your AC in NC?

Accepted Answer

78 degrees is the DOE-recommended balance of comfort and efficiency. Each degree below 78 adds roughly 3-4% to your cooling costs. Using ceiling fans allows you to set the thermostat at 78 and still feel comfortable.

Question 2

How much should AC cost per month in North Carolina?

Accepted Answer

A typical Piedmont home spends $150 to $300 per month on cooling during June through August, depending on home size, insulation quality, system efficiency, and thermostat settings. High-efficiency systems and good insulation bring costs toward the lower end.