Look for a refrigerator with automatic moisture control. Models with this feature have been engineered to prevent moisture accumulation on the cabinet exterior without the addition of a heater. This is not the same thing as an "anti-sweat" heater. Models with an anti-sweat heater will consume 5% to 10% more energy than models without this feature.
To get rid of drilling debris from holes you are making in masonry for anchors, use a section of small plastic tubing about 2 ft. long. By inserting one end of the hose into the hole and then blowing through the other end, you will be able to get rid of the drilling dust without getting any of it in your eyes.