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MN Renovator · 12-24-19, 01:01 AM

You should have more airflow and less temperature rise for best efficiency. 150f into 70f is an 80 degree temp rise. 2-4 cfm per square foot of solar footprint is the rule of thumb I've been told.

12-24-19, 01:01 AM	#4
MN Renovator Less usage=Cheaper bills Join Date: Nov 2010 Location: Minneapolis, MN Posts: 939 Thanks: 41 Thanked 116 Times in 90 Posts	You should have more airflow and less temperature rise for best efficiency. 150f into 70f is an 80 degree temp rise. 2-4 cfm per square foot of solar footprint is the rule of thumb I've been told.