what is an AC unloader do
#35358 - 06/17/03 02:22 PM Re: Air conditioner unloader. Carpal Tunnel Registered: 07/03/01 Posts: 6122. An unloader ordinarily lifts a valve open so the full capacity of a multi-cylinder compressor is not used.This can make the equivalent of a multi-speed compressor, which would accomplish the same effect of handling more or less cooling as needed.One unloader would do less reduction capacity than two. You would want to know how much reduction you need and what you are using it for.his can make the equivalent of a multi-speed compressor, which would accomplish the same effect of handling more or less cooling as needed. One unloader would do less reduction capacity than two. You would want to know how much reduction you need and what you are using it for.