Does anybody have experience in these? We have a problem in winter with our house being particularly cold, last winter was very difficult. The house is north facing and we have a new boiler (a big one) and have done cavity wall insulation this Summer. Loft is a bit more difficult as we have a dormer roof although I do intend to lag the eaves and the flat bits of ceiling over the next few months. We intend to install an 8KW multifuel stove in our lounge which is the centre of the house, it's an odd lay out but from the porch you go through the lounge to enter the house. This room has an open staircase and open plan to the dining room though only normal doorway width to the inner hall where the den, kitchen, utility and bathroom are. We only expect secondary heat but hope that this install will give an overall impression of a nice, warm house. Does anyone have any tips on use or advice on what difference in overall heat I can expect?