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fresh air intake into cold air return
I am looking at new 80% furnaces. I heard about new air quality recommendations towards increasing fresh air intake into HVAC systems. I have looked into ERV and HRV but I was discouraged from tying them into the existing HVAC system and that it would be better if they had their own dedicated duct work. Therefore, I found another potential alternative I want to run by the group. It is a motorized, dampered fresh air intake made by Honeywell. A penetration to an outside wall is obviously needed and when there is a call for heat or cold, the damper will open and fresh air will correspondingly be drawn into the cold air return of the furnace. I think it can also be programmed to open as specified intervals (when one is using a furnace with variable speed motor and the fan is recirculating the air constantly). I realize that this puts a slight load on the furnace or AC since in winter one is dumping cold air in the air return return and during summer one is dumping hot air into the cold air return. However, the device is much cheaper than an ERV or HRV.
Does anyone have input on using a device like this? I would have the furnace company install it as part of the job.
Here is a description of the unit:
Edited 11/6/2008 11:40 pm ET by Will92
Edited 11/6/2008 11:42 pm ET by Will92