http://www.hometips.com/home_probsolver/hps03/09_refrig/hps_refrig04.html

Oh man...did it for the first time this weekend.

I was eating a bowl of cereal Saturday morning, when I noticed the milk felt kinda warm. Checked the temp in the fridge and sure as heck it was 48 degrees (for the record it should be between 37-40).

What a mess down there. I doubt that thinks been deep cleaned in ....well ever. Half and hour later, and one foot long bottle brush that will never be the same, those coils are as clean as they day they were made. Well...maybe the year they were made.

Funny thing now is, the temp dropped down to like 33. So we have to reset everything to get it all balanced out again. But my point is the settings are lower, so that means the compressor runs less now...hence less electricity.