I have one as well. A Summit with stainless Steel top.
Do yourself a favor and visit the
Micromatic Forums
You can read about people's experience with different units and the tweaks they have made to reduce foaming, lower temperatures, actively blowing cold air into the towers to eliminate foam, etc.
Must do your research before making a purchase like that.
1 word of advice.
The items that come in the kits with most kegerators are mostly junk.
Upgrade the faucet, keg connector and Co2 regulator for MUCH more reliable operation.
I recommend the Perlick Forward seal faucet. No sticking and better pour.