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Thanks but I already tried that. It seems the thermostat does not control the blower, just the heat (no A/C). When the furnace heats up the blower kicks on. I need to manually wire a switch to turn...

Hi,

I would like to add a switch to my furnace so I can turn the fan/blower on and circulate air in our house in the summer.

If you look at picture 'B' below you can see I wire sticking out...