4 ms·
A fresh air exchanger in an HVAC system. The fresh external air coming in is [warmed|cooled] by the interior air being exhausted.
by throwawayboise 6y ago
A fresh air exchanger in an HVAC system. The fresh external air coming in is [warmed|cooled] by the interior air being exhausted.
- fy20 6y agoAlso know as a heat recovery ventilator. If you are building a new house, read up on these, as you probably want one.