Question: how many kwh does hvac use?
Answer: Air Conditioning and Heating An average central HVAC unit uses about 3500 watts and runs two to three times an hour for 10-15 minutes. In a 24-hour period, your HVAC would use around 28-63 kWh, resulting in about 850-1,950 kWh in a month, depending on the efficiency of your unit.