I'll throw my 2 cents in. First of all, dlcenters, I am very sorry that your application was denied. Maybe with a slight compromise, such as industrial fans or something similiar would make a difference, hopefully something can be worked out.
As far as the problems facing rescue groups, let me tell you some of the expenses and problems I have had as a foster mom (not even as a director, you poor souls!). The weekend of my birthday, I left my sister who was in the hospital just having had a baby and my family that wanted to be with me, to drive 3 1/2 hours ONE WAY to meet a family that desperately wanted to adopt Bosco. They were a lovely family and I mean no disrespect to them, but they took one look at Bosco and said, Oh, My, he's just too big. It says right on the website "a BIG boy..." and in speaking with them, I told them he weighed close to 90 pounds. They gave him little opportunity to show his personality. He was hesitant to go to them, but hey, he had just driven 3 1/2 hours in a Camaro and of course my a/c in my car stopped half way there! Of course he was slightly grumpy, heck, I was grumpy! I have also had potential adopters demand that I mail them videos of fosters because they didn't like "barkers", a different family wanted me to drive all the way to their house (about 4 hours away) and leave a guy overnight to see if it worked. They even said I should be able to find a hotel for around $60.00 a night so I wouldn't have to drive back home (how considerate! no mention of halving it with me). Rescuing is a passion that I have and I love my little lost boys, but sometimes I don't think that all applicants realize the dedication (both financially, emotionally, and time) that foster parents give. I would do anything to get my boys in good homes, but at times, I am at a loss.
Again, I am sorry because I really have a "gut" feeling that your a/c situation is a case of one bad apple spoiling the bunch. Don't give up, there is a special boy or girl that is waiting to find your loving home.