In the winter, you want to make sure your furnace keeps your home warm and your family comfortable. Homeowners experience short-cycling or overheating issues with their furnaces. With short cycling, the furnace turns on and off frequently. Sometimes it won't make any heat at all before shutting down. Common reasons your furnace may be short cycling include overheating, bad flame sensor, dirty furnace filter, blocked exhaust vent or heat grates, improper thermostat placement, or having a furnace that is too big for your home. Your furnace may turn off prematurely if it is overheating. Almost immediately after lighting, the furnace flame will go out if the flame sensor or flame rod is bad. Your furnace can short cycle and overheat if it has a dirty filter. You may notice that your furnace shuts off only a few minutes before your home is warm. Overheating can also be caused by blocked heat grates, which don't let enough air out. Blocked exhaust vents can also cause overheating and short cycling, but it is a potentially dangerous reason since carbon monoxide can leak through. The location of your thermostat matters because if your thermostat is getting warmed before the rest of the house, it will cause your furnace to turn off prematurely. Most homeowners install the thermostat themselves. It's not uncommon for homes to have too large furnaces because the installer thought bigger was better. This is not true, however, and can lead to short cycling of your unit. The best solution, if this is the cause of your furnace's short cycling, is to replace it. Short cycles, temperature swings, and high heating bills may indicate this is the issue.

In the winter, you want to make sure your furnace keeps your home warm and your family comfortable. Homeowners experience short-cycling or overheating issues with their furnaces. With short cycling, the furnace turns on and off frequently. Sometimes it won't make any heat at all before shutting down. Common reasons your furnace may be short cycling include overheating, bad flame sensor, dirty furnace filter, blocked exhaust vent or heat grates, improper thermostat placement, or having a furnace that is too big for your home. Your furnace may turn off prematurely if it is overheating. Almost immediately after lighting, the furnace flame will go out if the flame sensor or flame rod is bad. Your furnace can short cycle and overheat if it has a dirty filter. You may notice that your furnace shuts off only a few minutes before your home is warm. Overheating can also be caused by blocked heat grates, which don't let enough air out. Blocked exhaust vents can also cause overheating and short cycling, but it is a potentially dangerous reason since carbon monoxide can leak through. The location of your thermostat matters because if your thermostat is getting warmed before the rest of the house, it will cause your furnace to turn off prematurely. Most homeowners install the thermostat themselves. It's not uncommon for homes to have too large furnaces because the installer thought bigger was better. This is not true, however, and can lead to short cycling of your unit. The best solution, if this is the cause of your furnace's short cycling, is to replace it. Short cycles, temperature swings, and high heating bills may indicate this is the issue.

Making sure the furnace keeps your home warm

 

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