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Rheem classic 90 plus Summer switch?
grumc1
Member Posts: 1
in Gas Heating
It is sweltering right now and in past homes we’ve been able to turn the furnace fan on with the thermostat. This new to us home has an old style thermostat and I can not figure out where or how to manual run the fan to circulate the air in our home. I’m assuming somewhere there is a “summer switch “ inside the furnace. Can someone provide some insight on this.
0
Comments
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Eh, an old furnace? Look at https://scoophvac.com/furnace-fan-limit-switch/, see if you can't find one of those in your furnace.1
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If you cannot do it as @ratio mentioned you would have to add a fan relay and have at least 3 wires from thermostat to furnace.
I am assuming you have no AC installed now1
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