I posted last week that I was having trouble with my local L&I inspector. Well I have not recieced an official answer yet but he seemed to like the idea of a non pressurized storage tanks better than using the propane tanks I had planned on. I took delivery of my Froling yesterday. It will be a while til I am able to get it intalled but it is very exciting. My question is whether an non pressurized storage system with heat exchangers is as efficient as two vertical pressurized propane tanks? It will cost more for the non pressurized tanks but in my situation, it will be a lot less work and probably make the inspector a lot happier. I received a quote on a 957 gallon tank with 4 heat exchangers. I would just like to know if I will be as happy with this setup as I would be if I went with the propane tanks. Any info or opinions would be appreciated. I would like to make a decision soon. Thanks!