I have been working on Refers/Dash AC's and Roof Ac's for 40 years and still working. I can state that the slower the air thru an evap fin will yield colder air. Maybe Canada does not follow laws of Physics:B Those that state faster air flow has NO affect, explain WHY on both Dash Ac's and especially roof Ac's the units can freeze up while on LO SPEED and the fix is to run on HIGH SPEED to prevent freeze ups when there is no tstat used to prevent freezing??????? I stand by my 40 years of experience on what I have stated. Doug
