#1 in Clayton
Comfort Zone Mechanical LLC
Clayton, NC
(919) 480-4403
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Common causes: the thermostat set to ‘fan’ or ‘on’ instead of ‘auto,’ a dirty filter causing an overheating shutdown, or a pilot/ignition issue.
Check that the thermostat is on ‘heat’ and ‘auto’ first. If cold air keeps blowing, the system likely needs a tech.
Many shops treat heating failures as priority calls. Call in the morning and say the heat is blowing cold.
Heat pumps briefly blow cool air during defrost in cold weather. If it goes on for more than a few minutes, call.