I'm a homeowner with a question about ventilation in our home.
The home is recent construction; sealed very tight, one stage gas furnace and one stage A/C.
The builder specified the HVAC contractor install an AirCycler FR (not FR-V) as part of the HVAC system. For those who aren't familiar with the AirCycler, it basically makes a 10 minute call for fan whenever there has been 20 minutes without fan activity. The AirCycler releases it's call if the thermostat makes one.
Connected to my return duct is an undampered six-inch flexible insulated outside air duct.
As I understand it, the builder had at least two things in mind specifying the HVAC this way. First, it provides regular ventilation with fresh air. Second, the fan cycling helps "even out" temperatures throughout the house.
We've lately taken to running the house fan continuously. A concern I have is that this undampered six-inch outside supply is providing us with more fresh air than we need, which would make our furnace work overtime and make the humidifier less effective.
The AirCycler model FR-V would have been able to control an electric damper and only allow fresh air in when needed, but that isn't what we have.
Do you think my concern about "too much" fresh air is off-base, or would you recommend I have a balancing damper (or FR-V controlled electric damper) installed?
P.S. - The furnace has a separate outside duct to provide combustion air.