Generator Installation

I hope you bought the tank and not rent it. Once you "rent" a tank from a vendor, you have to buy your LP from that vendor, and not from anyone else. That also means that the leasing vendor can charge what ever they want for the LP, which is always a lot more than going rate. They have you by the balls and knows it. FL law backs this up. When you buy the tank, you can shop around for best price. You want to own the tank. Don't ask me how I know.
 
About the only positive I can think of in having the co. install the tank and leasing if from them is that the co. is then responsible for the cost of replacing any gas that may be lost to a leak (unless negligence by another party can be proven).