The AC is not working good

Hubby said that he need to have our auto air conditioning check because it is not working really good now, since the weather its getting hotter. He said that the AC on his truck seems to work good at first then stop. He thinks that the Compressor is going bad. He really needs to check the 1airconditioning.com website because they have good quality product and at great prices. They also offer a free shipping and all parts carry a warranty. So where can you go wrong with that?