Bests & Worsts Reviews from Amazon

After reading many reviews and research about this product last summer, plus getting local advise from friends who also have tankless water heater systems installed. I looked around at how they are installed and the local laws on how to do it properly. The major downside of buying this product on Amazon and DIY install is that you loose the warranty aspect, but like everyone else said that these things are rock solid and easy to maintain. The first thing when you get this is the fact that its small and light. And when you open it up, you are just stunned of actually how much room is not being used inside the case too! It's a feat of engineering that you are able to get 6+ gallons per min of perfectly hot water from this unit without end. I was worried about Installing the unit right so I took my time and did my homework. I probably went to Home Depot & Lowes 20 times during this project over the course of 4 days as I had to relocate the unit to make routing the exhaust easier on myself. I built a simple wooden frame next to an open vent in the craw space below the house and attacked the unit to it. Since the exhaust is literally inches away, I just custom built a metal adapter to cover the vent perfectly, slide in a vent duct and attached it to the unit with no issues. I also used high temp, fireplace sealant to make sure no outside water ever got through the event and then used aluminum tape to seal any loose vent cracks. I would highly recommend getting the Webstone Heater Service Valve Kit as it'll make life easier to service the unit down the road. http://www.amazon.com/Webstone-44443WPR-Isolator-Tankless-Construction/dp/B005Q5LXY6 I would also recommend using flexible water and gas lines with valves for all in and out piping to make it easier to install. I would also recommend to use valves between the Heater Service Valves and the unit so you can easily remove the heater if you ever need to. I did not do this, but I may down the road. Other than what I mentioned above, after doing it once, I'm very confident in doing it again and install this in just a few hours now that I have the proper tools and knowledge in knowing what simple things to get that kept getting this project finished earlier.