Can't recall off hand. I did some testing when we first installed it but that was a while ago. It does not work wonderfully at idle but is fine when moving,even in the city. Of course, I'm in Winnipeg and not Florida so it may work better for me than it would for you. We do get some hot weather though and it worked fine for me this summer. Remember, this is a 32 year old car and I don't think it was ever as good as the new ones are even when it was new. I have an 02 Ford Supercrew and the AC is colder in it.

Randy

1995 V6 SR5 5 speed 4X4 - 4Runner - dark blue