I didn't think to mention what Sadavis80 wisely mentioned about general cleaning. Good catch!
This is a really good time to clean everything.
We all routinely clean the condenser coil from the front (right?), but now you can get to the back of it and to the fan blades. I also wipe the compressor dome & refrigerant tubing off so the dust isn't there trapping heat.
Some vinly tubing taped to a small wet vac nozzle help get way in.
Bottle brushes help as well. (You can get long coffee urn site glass brushes at a restaurant supply house.) If SWMBO is not home, I also blow the whole thing out with compressed air.
The only trouble I have is keeping my dog buddy from helping. (Any treats fall under here? Let me check...)