I’m not sure what you’re saying. You have a forced air system with a cold air return? What did you cut a hole into then?
Running the circulation fan constantly usually doesn’t help. If you have any ducting buried underground or in an attic (unconditioned), you’re just going to waste electricity using the fan, and dumping heat through the ducting into the attic or wherever.
Most systems have 3 fan settings 1) auto - run fan when heat or cooling are being called for 2) on - run constantly which is a waste 3) circulate - run fan for 2 minutes or so, every 10 minutes or so. Option 3 is what you want. But realistically “auto” is probably best unless you’re generating a few hundred watts or more in that one room.
A box fan in an open door will probably serve you better. Because it’s not pushing conditioned air through unconditioned space. It’s all staying inside the rooms and hallways.
I’m not sure what you’re saying. You have a forced air system with a cold air return? What did you cut a hole into then?
Running the circulation fan constantly usually doesn’t help. If you have any ducting buried underground or in an attic (unconditioned), you’re just going to waste electricity using the fan, and dumping heat through the ducting into the attic or wherever.
Most systems have 3 fan settings 1) auto - run fan when heat or cooling are being called for 2) on - run constantly which is a waste 3) circulate - run fan for 2 minutes or so, every 10 minutes or so. Option 3 is what you want. But realistically “auto” is probably best unless you’re generating a few hundred watts or more in that one room.
A box fan in an open door will probably serve you better. Because it’s not pushing conditioned air through unconditioned space. It’s all staying inside the rooms and hallways.