I guess my first question would be; are you building a home kegerator or purchasing one? If you want to purchase one I suggest getting a True TD-3 or Beverage Air 3 (holds 3 kegs). I own a True TD-3 and absolutely love it! I put dual towers on mine to either serve 2 kegs lager & 1 Nitro beer or 2 kegs Nitro beer and 1 lager. One faucet is always dormant but it allows for very good lattitude in how you want to serve beers up. A 4 keg one was too large for my use and as much as I like beer 3 kegs on tap at one time is adequate!
Here's some pics:
VIDEO
Some of the parts I used:
2 - 10Lb Aluminum CO2 tanks
2 - 22 Cuft Aluminum Nitrogen tanks
1 - Mixed Gas Regulator- Nitrogen 942BN
1 - Mixed Gas CO2 942B
2 - 2 Pressure - CO2 Secondary 1162
1 - Truemix Gas Blender Double TM200
3/16" I.D. Clear Vinyl Hose 547C600 (Beer)
5/16" I.D. Braided Vinyl Hose (Gas)
You will also need all the tail pieces, clamps and fittings. I can email you my entire parts list if you would like. Understand I put about $4,500 onto my Mastercard for this baby too but for me it's priceless!
ALL THE PICS - LARGE