Interesting....not one picture of an oven on your home page...I would expect to see at least a comparison of a dirty one and then the after pic after you had cleaned it. I am shocked actually, that a picture of the service is nowhere to be seen upon landing on the most important page of your website.
There is one pic on the about us page (strange place to put a before and after pic anyway) which to me looks like it has had the dirt photoshopped onto the left side of the image.
Get some real pics on there of the before and after of real customers ovens. Or do you have no control over the website with it being provided by the franchise? Which is another thing, its too franchisy looking. it loses the local feel to it.
Pages dedicated to the franchise and the big banner at the bottom - why should the franchise get any part of your website apart from perhaps a link in the footer?
Have you researched which keywords are actually the best to use? Do you get any say in optimising your website for different keywords?