Derek wrote:
Most cars tend to have black radiators, condesors etc. but I've
noticed some oil coolers and sleeve type air units use silver
(aluminum).

Is this just a styling issue with cars and refridgerators etc., or is
one colour better for radiators?

Similarly, all the evaporators I recall seeing, have all been in their
raw metal colour. Does it make much difference at the end of the day?

Thanks.

I've got a really old book on steam heating and plumbing that had a
write-up on the effects of color on radiators. Turns out radiators
painted black or a dark color were slightly more efficient than
unpainted or light-colored ones. The difference was very slight in
those tests and at the temperatures they were using. Probably added
manufacturing cost has something to do with it, coupled with the very
slight efficiency boost that can be had from black vs. as-is. On the
wrecks I've robbed,radiators were uniformly black, A/C components were
in the white. Might just be tradition on the radiators' color.

Stan