On 4/1/2012 6:58 PM, Stormin Mormon wrote:
I didn't think you saw what I wrote.

Christopher A. Young
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wrote in message
...
On 3/31/2012 3:09 PM, Ed Pawlowski wrote:
On Sat, 31 Mar 2012 11:06:48 -0400, "Stormin Mormon"
wrote:

It's been my experience that copper is a harder metal, and much easier
to
work with, in terms of soldering or brazing. I've not tried aluminum, I'd
just expect it to melt out from under.

With no data except my gut hunch, I'd not put aluminum unit in my own
home.
Until it had been on the market for several years.

It has been on the market for years. It is cheaper to build, more
difficult to field repair.

All aluminum coils were starting to come into play in the late 1960's.
I worked for a company that made HVAC units until 1970 and we made our
own copper tubed coils and they started to buy aluminum coils.
Thanks Ed for your reply and information. I just noticed that you have
taken the time to provide useful and helpful information which I
appreciate very much, and I am going to go with the copper / Lennox
approach. My very limited experience working with aluminum leads me to
the same conclusion you state and copper seems like the better choice. I
am guessing that aluminum is becoming popular more as a result of rising
copper costs than other, technical reasons.

Thanks again.


For reasons unknown, your prior post did not show up but I do appreciate your reply now that I have read it. My gut reaction closely follows your advice and opinion, and I am committed to copper for this next a/c unit.

Tonight I did find this article (see link below) from a company which
apparently offers (only) aluminum and not copper heat exchangers /
coils, and they offer claims that aluminum is superior, but I am not
convinced. If they offered both and showed the relative benefits of
each, I might find it more convincing.

I guess I am both too old and also too old-fashion to get very excited
about an all aluminum solution. Since Trane is the only A/C manufacturer
using it as far as I know, I have to believe it is not the obviously
better solution, especially given the relative costs of copper versus
aluminum.

Thanks again for replying.

http://www.hydro.com/en/Subsites/Hyd...um-and-copper/