This little redstone device is 4 high, 8 wide and 4 long. It can be used in any house, however it does require a little chimney and a 6 wide wall. It is super quick, but doesnt auto reset the fire, youll have to do that by hand. Furthermore, it is hard to build in survival unless you have got this:
-1 lever
-10 pistons
-12 redstone dust
-10 repeaters
and of course, just some blocks

Additional Notes