One of the first videos that actually discussed what it says it's about. Love this!

I am going to buy this same exact unit very soon (Probably next week from Home Depot). My water heater is about to fail. This model had the best reviews and it comes with the flue vent.. The water connections on the bottom are both 1/2 in. pipe thread. The service valves are 3/4 in female pipe thread. You will need 2 brass bushings 3/4 MIP x 1/2 FIP in order to hook up your service valves to the unit. The gas input is 3/4 in. pipe thread. My house has 1/2 in. galvanized pipe thread. I will need to go from 1/2 MIP x 3/4 FIP brass bushing. I also plan on using a sediment filter on the supply side only to filter my hard water. This will help reduce the sediment that comes in contact with the heating element inside the heater. Hopefully this will make the heater last longer. I am going to use 3/4 in. SCH 40 PVC for the supply and 3/4 in. copper for the hot. I am replacing a 40 gal natural gas water heater in the garage. It never gets below freezing where I live.