A/C

[KenP]

Get by the disagreement and read this. It may help.
http://elcova.com/groupee/forums/a/t...1131069121/p/1

[HUMMERcustoms.com/TAZ]

I would recommend trying the eletric fan. It appears that with trany coolers etc. that there is not enough cool air moving over condenser coils of a/c. The electric fans move about 5000cfm if I remember right, which is way more than the stock fan. If that is the condition then it will just seem like not enough freon but if you do not bring down the temp of freon good enough coming through condensor you will not get cold air of the evaporator coil like you should.
TAZ

[h2sin]

Out of all the vehicle I have driven in the past, H2's A/C has to be the worst one I just learned to deal with it since I love
everything else.

It does do its job with recirculate mode on but I strongly recommand not using it unless its absolutely necessary since it can cause a mildew smell(possible health risk?)over time

[ira]

TAZ,
my ac doesnt get cold enough.
where did u exactly install the fan?
could you send me some pics?
could i just manualy on and off the fan by switch when i need it?
thanks.

[Beastmaster]

To add:

A properly working (read - airflow through the condenser coils and a properly charged and oiled system) R134a system will reduce the ambient air temp about 30 degrees at the air vent.

If you live in an arid and dry area like Arizona, there are many times where the outside ambient air temp is lower than the inside cabin air temp. (Example - when the outside ambient air temp is 110 degrees F, my inside cabin air temp can he as high as 130, according to the little thermometer clipped to my air vent. This is when my truck is outside in the sun for at least 3 hours in the afternoon)

In situations like this, running on recirculate actually ends up being less efficient than running on a non-recirc setting....hence the joke about Arizona residents finally getting cold air out of their A/C when they get to their destination.

A Spal or Flex-A-Lite fan will do wonders. I have a Spal add on fan for my A/C condenser and I get cold air all the time - even when I'm stuck in traffic.

[GeorgeSSSS]

h24us:

Sorry to hear about your trouble. You would think the H2 dealer would be the MOST knowledgeable person about AC in a place like Las Vegas where keeping your car cool is critical. Unfortunately, AC sometimes seems to be a weakness of the H2 based on other posts I've seen. I'm thinking about installing Flex-A-Lite dual 19" electric fans that come attached to a shroud that exactly fits the brackets on the H2 radiator. I am told this solves the problem. I've heard it also improves gas mileage about 1 mpg by decreasing drag on the engine by about 17 hp.

A cheaper solution might be to buy a replacement fan that has flexible blades attached to the vanes. At low speed, the blades have a sharp angle of attack and move alot of air past the radiator/condensor. At higher speed the flexible blades flatten out and let the air pressure in front of the moving vehicle do the job. I installed a system like this on my car about 35 years ago when I had an overheating 396 Chevy and it solved the problem. Don't know if it would work for you, but I don't believe it would be too expensive to give it a try.

Don't know whether GM would give you warranty grief if you make any of these changes.

There are other people on this forum who know alot more than I do. Maybe some of them will weigh in.

Good luck,

George SSSS