The unit works incredibly well. Brian recommends a 180F t’stat,
and I selected a 187F control point for my application. When the a/c is
turned on, the fans come on at 50% level. Because the current is varied,
there is no start up current spike – which is very hard on motors
and alternators alike. The car is operating in between 185F and 190F and
you can’t tell the fans are even working. Because they only draw
enough current to keep the car at the set point, you don’t hear
the noise of them cycling on and off. And the charging system doesn’t
have to deal with, in my case, 35A of continuous draw when they’re
on, and a 75A current spike for a half second or so during fan start up.
Michael Yount |