Clean air conditioners

I tried one can of coil cleaner and it calculated it would have taken another case of cans to do the job on both units. Thrifty sort that I am bought a $3 bottle of 409. BTW, Simple Green is NOT recommended.

Used a "RV Air Conditioner Coil cleaner" called "GOOD STUFF", bought it from the RV Dealer, quite pricey but it did have RV in big letters on the can. :B
It did work well, required a water rinse, but I did not get any water or cleaner inside the motorhome. Wolfe10 is probably right that any good coil cleaner would work.

Yes, you will need to clean both the condenser (easy) and the evaporator (removal of another panel required along with keeping water out of the interior).

Any commercial evaporator cleaner (box store) will work just fine.

I use AC coil cleaner.

Cover the floor under the units with a shower curtain and or towels.
On the roof side, take off the outer cover then take off the sheet metal cover that is at an angle on the front top. Stuff more towels around edges to keep from getting water on your floor.
On mine, since its Florida, they were covered in black slimey mold. Coleman recommends 409 cleaner, a brush and water. Spray, brush, rinse, repeat 100 times until clean. Lots of crud will now have fouled your roof and outer walls, so you might as well plan on washing the roof and sides while you are at it. My TPO roof manufacturer recommends Murphys Oil Soap. I add a little bleach as well.

I use an air compressor to blow out the condensor coils and dirt that has accumulated in and around the compressor and evaporator shroud. Make sure you take some wrenches or a socket set up with you. I had to tighten the nuts down on both of my condensor fans. Some folks use their garden house to clean them.
Good luck.