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I've been wondering why my Nest thermostat doesn't already have an option to do this. I can turn on the fan manually, but it's not smart enough to do that autom
by dimal 4y ago
I've been wondering why my Nest thermostat doesn't already have an option to do this. I can turn on the fan manually, but it's not smart enough to do that automatically when it's cooler outside than it is inside.
- tadfisher 4y agoYour system only exchanges heat with the outside (via a refrigerant). The fan only circulates air; on its own, it doesn't draw air from the outside (by design; you don't want to be cooling outside air). The system would need to have a second mode and a fresh air intake, as well as wiring and support from your thermostat. It can be done, but HVAC is a slow-moving industry.