Don't listen to James. It needs work. It's very hard to tell what the items are in the pictures. I think you need a cleaner less colourful/cluttered design. It's not very professional looking. The customer may be asking for this stuff. If that is the case you have my sympathy. To start, I would ditch the rainbow.
I hate to say it but I would abandon everything you've got there. I think you've gone off in the wrong direction with it. Start over with something completely different and just see where it takes you.
the problem with those A/C cutouts is no one will know what they are....... if you're going to put an A/C unit on there, put what everyone see's and recognizes. The colors are not bold enough, if you're going to go rainbow, go full blown rainbow, but you better find some contrast.
Try for something that makes sense. EVERY Heating & Air design I see has the red/blue fade or divide, with icons to symbolize hot and cold. Unfortunately the guys name doesn't give you anything to work off of, so you have to come up with the image on your own, not everyone wants dragons and clouds though.
Sometimes it's best to close the file and start all over again.. maybe sketch something out on paper until you get a new idea. The problem with designing on the computer is UNDO.
I can't give you the ideas, that's your job, but I can help tell you what's wrong.
Sorry Brian, You need to start over. You must get rid of that cloud and dragon. They're awful. I like the direction signmeup is going. If you need to use pics of equipment, find a pic that doesn't show the guts and put it off to the side, not behind.