I have a two stage high efficiency Carrier furnace installed in 2000 that we’ve been having trouble with every winter. The furnace will intermittently stop running and won’t come on unless the front cover to the furnace is pushed or the thermostat is clicked off and then on (the latter doesn’t always work though and we have to go push the door anyway). We change the air filters every month, and even had the thermostat (programmable) changed twice, the last time by a service tech. Nothing seems to work. The manufacturer said that since the furnace kicks on when the door is pushed or the thermostat is turned off and then on, its a thermostat problem. The manufacturer of the thermostat (Honeywell) says that the thermostat is working properly and that its the furnace that is the issue. Anyone got any ideas to fix this furnace since these two companies aren’t being any help? Thanks in advance!

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Where is the best place to mount a humidifier, on supply or return duct? Or does it not matter?

Thanks for any info.
Is it best to mount a humidifier on the supply or return duct? Does it matter? The furnace is a high efficiency model, 2yrs old & has an Air Bear media filter.

Thanks for any info.

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