The freezer has not been working well. A few weeks ago I noticed that food in the bottom was not as frozen as the top. It's getting worse and half of my food is defrosted. Is there anything I should check before calling a repair service? Thanks!

Have you tried cleaning the condensing coils and condensing motor?

Thanks for the reply Doug. I have not, is it difficult to do?

Not at all. You can use a brush and a vacuum. Just pull the unit out from the wall. When all this collects dust, and it does, it will cause the unit to run warmer

Done, thanks!

Post back your results. Did you find quite a bit of dust build up?