Why Does My Furnace Keep Turning Off and On?

Short cycling—when a furnace turns off and on repeatedly—wastes energy, stresses parts, and usually means something simple needs attention. Homeowners in Minnesota see this most when temperatures swing or filters clog. Most furnaces short cycle because of restricted airflow (dirty filter), an overheating safety shut‑off, a mis-sized system, or thermostat/pressure switch issues. Replacing the filter […]


