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Thermostat for variable speed blower
Greetings. In my new house I have an Amana (AMVC950905DXAB) gas furnace and Goodman A/C. I installed an ecobee thermostat last year, and since I only have 4 wires, I used the G wire for C, since the ecobee needed a C wire. The heating/cooling in the house seems uneven, so I thought I'd try leaving the fan on all the time, but of course, that means I need the G wire. I bought a cheap Honeywell thermostat and hooked it up, but "fan on" doesn't work. I think it's because I have a variable speed blower, two-stage furnace, and it needs some other kind of voltage. Is this right? If so, can anyone recommend a thermostat that will work? and doesn't need a C wire?
And what about the uneven temp in the house? Is leaving the fan on the right thing to do? Honeywell sells sensors for other rooms that communicate with the t-stat -- does anyone have experience with those?