Damper control is based on outside air temperature and CO2 levels in the room or return air; when conditions are favorable (appropriate outside temperature, CO2 levels not too high), dampers modulate to recirculate some air back into the system, reducing the load on heating and cooling coils and saving energy.
factualpending
Evidence Quote
“And it will usually depend on Outside air temp conditions for one and also the level of Co2 in the room or in [the] in the return duct here and if the conditions are right Then it will channel some of that back in and that means that The heating coil will not need to do as much work”
Created: 8/13/2026, 4:57:53 AM
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