Important : the chimney and the water heater

If you install a chimney, it is better to install it against a partition wall to benefit from its accumulation and of the spread of the heat thanks to its conductivity. If you install it against a peripheral wall, you will lose energy, because a wall, though insulated, lose three times more energy at 70°C than at 20°C, and it is 70°C or even more in the hood, when the chimney is on.

If on the other side of the wall, there is a bathroom, it is perfect. If it is a room, there are chances to be too hot, with too dry air. You may have a bad sleep. If there is no other solution, you rather install it agains a peripheral wall, mostly if you only use it at Christmas.

The water heater, if it is an electric ballon, it must be placed in the bathroom. It always lose some heat, just pass your hand around the bulb, and this soften the temperature of the bathroom. This can avoid, in mid-season, to use the heating. Furthermore, hot water comes faster, and thus you lose less water. Often, the kitchen is at the other end of the house, too bad, it is better to place it in the bathroom. Not lost energy is not paid energy.