Our Kilowatt calculator lets you put in your room dimensions, select how well your home is insulated and then finds you matching stoves, sized to keep you cosy. It's important that your stove is sized correctly for the size of your room; too small and it won't do what you need and you'll have to run it too hard, too big and it won't run at it's best, plus you may overheat. The room dimensions are in meters.