Other than the parts of the mask that touch your skin, I'm skeptical about the need to keep CPAP equipment particularly clean in a germ sense.
Assuming that you don't let anyone else use or handle your equipment, any germs on the equipment are going to be what is living in the air in your house, on your body, or in your tap water. Ignoring the water tank for the moment, there's not much food in or on the equipment for the germs to feed on, so the number of germs leaving the machine should be roughly the same number of germs out as the number of germs in from the air.
The water tank can grow germs, but in theory, they can't get out of the water and into the air. If you use distilled water, there's a lot less food for the germs to grow on.
However, keep it clean anyway. I clean my equipment thoroughly weekly and swap hoses, masks, and water tanks so I can let everything dry for a week.
If you find the cleaning ritual to be burdensome, get a few sets of equipment. Let the "dirty laundry" pile up a little longer then do a thorough cleaning when you run out of clean stuff.
If you're feeling paranoid, replace old stuff and/or find more severe sanitation processes occasionally. I've dropped hard plastic and silicone parts into a large pot of boiling water, turned the heat off, and let it cool slowly. I damaged one of the new style ResMed S9 non-dishwashable tanks, and some of the hoses got a bit "crinkly." You can also buy Control III disinfectant from Supplier #1
or other places. Read the directions, and dilute it properly.
Neither heat nor Control III kills everything, but they help. Or at least they make me feel better.