I have a Heatilator EC36 ZC fireplace which is well-maintained and in fine condition. I and have been lurking around here and doing other research on having a woodburning insert installed in the existing fireplace. I have had the Quadra-Fire dealer out (for a $95 fee to be applied to my purchase) to see my application, take measurements and offer a quote on the 2700i. The installed price is more than double the cost of the unit and includes a liner to the top of the two-story prefab chimney. Although everything I read tells me I want to err on the side of caution with the installation, the installed price was high enough to want to add some competitive tension to the process. I have a Lopi dealer coming out tomorrow (at no cost) to inspect my application and take measurements. They advise that the Revere is made for the same purpose as the 2700i. Barring any unexpected observations the Revere is a bit less pricey with slightly higher heating capacity. The unit will be located in the family room of a 2450 SF center hall colonial style house. I would appreciate comments or user experiences with either unit. Also... thanks in advance for the valuable resource this site has already been for me.