Hi Dave, what was that you said.This is a CCM (Walker Radiator) fan. Like Al, it is thermostatically operated (a Painless Wiring kit) and is about as quiet as any fan that size can be. Even with my open car, difficult to hear - but too many hours in my young days before OSHA have not helped my hearing either.
To quote some of my Commonwealth friends "Ehhhhhh", which when I do it, upsets my very soft spoken wife ENORMOUSLY. I had my hearing checked a couple months ago - the graph the doctor showed me was NOT pretty and was told I should see a hearing aid specialist. If I do that, then all those honey do's couldn't stay unheardHi Dave, what was that you said.