I installed this tankless LP water heater about two months ago on our pool house. Since it gets used infrequently, I'm feeding it with a high capacity regulator on a 20 lb cylinder. Installation was mostly painless. It works as advertised, although I recommend installing the included control panel at the same time the water heater is installed. Initially it worked without the control panel connected, but managed to turn itself off after a couple of weeks. I connected the control panel, pressed the on button, set the temperature, and all was well again. Overall I am very happy with this purchase. I had problems getting half inch pipe thread plumbing to mate properly on the water connections. My suspicion is that the water connections are almost standard half inch compatible, but not quite. I was able to get the connections threaded well enough to prevent leaks, but it took considerable effort. If I had to do it again, I'd use the provided 3/4 inch adapters. Those mated well with the 3/4 inch parts I had lying around. Also, this is the first tankless LP water heater I've ever used. The minimum flow rate required to start the heater (while I'm sure it meets spec) was higher than I anticipated. It is pretty easy to turn off the water heater in an effort to get a reduced flow of warm water. Fortunately, the control panel indicates whether the heater is on or off, so I can train myself to set the flow appropriately. When I eventually put a tankless LP water heater on my house, I'll probably spend the extra cash to get one that has a lower minimum flow rate. Or, perhaps I'll include a very small electric tank heater in-line near some of the faucets.