Just a little update. Well after having only 2 hours of usable sun shine in the last 3 days the temperature in my garage was down to 14C (57.2F). As of noon the temp has climbed to 17C (62.6F). The fan has been running continuously for about 2-1/4 hours now. The inlet air temp is 17C (62.6F) and the outlet air temp is 50C (122F). By the way outside temp is 6C (42.8F). Panel has had full sun for about 1-3/4 hours. Looking good so far