Why a Dirty Coil Causes Heating Issues And Why It Can Trigger Your High Limit Switch
A dirty coil is one of the most common — and most overlooked — causes of heating system performance problems. When dust, debris, and buildup accumulate on the evaporator or furnace coil, your HVAC system cannot move air properly. This restricted airflow leads to overheating, safety shut-offs, and uncomfortable temperature swings. One of the biggest
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