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    fishing1940's Avatar
    fishing1940 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 26, 2009, 03:04 PM
    Exploding Furnace
    Approximately, once a week, I hear an explosion (similar to an M-80 firecracker) coming from my home's furnace area. I think its my Carrier furnace. The unit is about 30 yrs. Old. When the furnace is told to heat the house (via the thermostat), the furnace fires up, then the fan comes on, and while the fan in working, the furnace fire goes out for aboat 10 seconds then refires. This happens until the set temperature is reached. Is this the way a furnace is supposed to work?
    hvacservicetech_07's Avatar
    hvacservicetech_07 Posts: 1,083, Reputation: 75
    Ultra Member
    		  
    #2

    Oct 26, 2009, 05:54 PM

    No, that is not normal. It could be a number of things,maybe a gas valve going bad,gas pressure issue or even dirty burners.

    Either way, I strongly suggest shutting the furnace down and getting a pro out to take a look or the next explosion you hear could be your house.
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