I have long wanted to do something about the air quality in the bed roome so it would be nicer to sleep in there. Then I got an idea to make this heat exchanger HRV.

It replaces the air very efficiently heat exchange is not overly good but it is a cheap DIY project that works.

Part 2    • DIY simple cheap easy HRV=fresh air s...  

Fan spec:
ARCTIC SILENT
F12 Silent Extra Quiet Case Fan
120 mm 800 RPM
Airflow 37CFM/62.9m3/h