A little off topic...
how do guys like this water heater? It's on my to do list for this winter.
I bought the Rheem XG50T a year ago at Home Depot, and added on the Rheem WiFi module. My main interest was to have a water sensor alarm, my second was to remotely heat it up when returning from vacations.
I like the water heater fine, but I once woke up to a refreshingly cold shower after playing with the iPhone remote control app the previous night. A power cycle reboot of the water heater fixed it. I'd recommend anyone developing a plug-in for Vera to power cycle their water heater after they're finished testing for the day.
I do have one problem with the WiFi module: it restricts water temperature to 140F max. I use a thermostatic mixing valve to limit the output temperature to 117 (to avoid scalds); that lets me keep very hot water in the tank. The mixed water delivers "more" hot water for showers than the tank would normally provide. The valve means I can run my water heater at maximum heat safely, but the WiFi module now limits me. I've sent a request to Rheem to provide an option to override the 140 degree limit; they added it to their list of "things they'll do if enough people ask for them."
(Oh, and the Sharkbite hoses? Totally worth it!)