Hi I have just purchased a 21kw stove with back boiler. A flexi 9 meter kit including cowl and joiner and a 6” flue. I have an installer coming to price the installation. I have an existing fireplace with loads of room for the stove and an existing chimney. Also at the back of that wall only a few meters away is the boiler house. Does anyone know how much I’m roughly talking for the installation. For the stove and kit I’m already after paying €1700 without installation