I got the AC on full blast and the room feels cold enough that I need a blanket. So how come every thermometer says the room is at 25C/77F?

Question

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In: Other

Answer 1

Check behind the thermostat for air infiltration. Recently found out why the 65F air from the AC cooled the room way below the 72F setting while the thermostat read 79F. It was mounted on an interior wall with attic access above. The hole for wires behind the thermostat blew out hot air from the attic, keeping the reading high. Some blow-in foam and duck tape over the hole stopped the draft, and now 72F settings makes for a 72F room.

Don’t ask about some future need to pull wires though that wall section. Electric money I save now will pay for that extra wiring charge later.