I am writing this thread as penitence for neglecting to vacuum the coils and fan on my refrigerator. DW and I are doing our annual top to bottom cleaning. I took the access panel off of the frig and was completely disgusted with myself. The condensing fan was completely clogged by dog hair. We have a mastiff who sheds copiously. The frig had to be costing us money due to having to work harder and use electricity. Also, it could have shorten the useful life of it due to overworking. What other cleaning projects do you do that will make you money?