DEVICE RECOVERY INDEX
Furnace repair recovery
Browse stuck repair states for furnace and start with the safest next recovery step.
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Why is my furnace blowing cold air when the heat is on?A furnace blowing cold air often means a dirty flame sensor, tripped limit switch, or thermostat issue. Restart the system and clean the sensor.Moderate · 45 min · 50%
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Furnace Won't Ignite — No Heat When Thermostat CallsWhen the thermostat clicks on but the furnace never fires, the problem is usually the igniter, flame sensor, or gas valve. Start with the simplest fix.Moderate · 30-45 min · 50%
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Furnace blowing cold air when heat is on?Is your furnace running but pushing cold air? Learn how to diagnose and fix common causes like a dirty filter or faulty flame sensor.Moderate · 30 min · 50%
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Why Is My Furnace Blowing Cold Air Instead of Heat?A furnace blowing cold air often means a dirty flame sensor, pilot light issue, or thermostat problem. Diagnose and fix it.Moderate · 30 min · 50%
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Furnace Blower Won't Stop Running? The Limit Switch or Thermostat Fan Is StuckYour furnace blower keeps blowing cold air 24/7 and won't shut off. The fan limit switch is stuck or the thermostat fan setting is on ON instead of AUTO — two free fixes.Easy · 15 min · 50%
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Furnace Short Cycling — Turns On and Off Every Few MinutesA furnace that kicks on and off every few minutes is overheating or misreading conditions. Find the restriction before the heat exchanger cracks from the stress.Moderate · 20-30 min · 50%