My parents have been having a problem with their furnace. The furnace seems to run fine most of the time. However, on random occassions, the furnace begins to start up and get ready but it doesn’t ignite and let out heat. So my parents flip the switch off and on to restart the furnace, then it ussually starts up and lets out the heat. This ussually happens at night at least two times a day.
They have called numerous HVAC experts and the gas company to look at the problem and no one has been able to fix it. All the repair people seem to be baffled. The electronic ignition, hot surface module, and thermostat have all been replaced. The gas company has checked to make sure there is no leak. The burners have also been cleaned to make sure no dirt is blocking the furnace from igniting.
The model of the furnace is a ComfortMaker. It is about 20 years old. If you have any recommendations, please let me know. They are considering buying a new furnace and have spent 500 bucks so far in repairs.
Thanks very much for your opinions!