You need a freezer in the garage (which you can get easily on craigslist for $50-100), and a thermostat controller

http://www.amazon.com/Johnson-Controls-Digital-Thermostat-Control/dp/B00368D6JA

Fill the freezer with apples, connect the thermostat, eat until summer. 35F is probably a good temperature to set it at.

I have a regular upright refrigerator, and I've kept them for several months, into the next year. Most of mine are Galas, which aren't good keepers. I'm hoping for better keepage when I get more Enterprise and Fujis.

A cheaper, though labor expensive alternative, is to build an insulated storage box, with room for 5 gallon buckets besides the apples. Freeze the buckets (outside in winter, in the freezer in spring) and replace in the box as needed.