02/01/16 - While construction and painting is continuing upstairs, mechanical, electrical, and plumbing is happening downstairs. That is where the seven rainwater tanks, the composter, and the batteries ended up but it is also where the hot water heaters, the electrical panels, the gray water tank, the filtration cylinders with the UV light, and the heat recovery ventilator are located. (The purpose of the heat recovery ventilator is to introduce fresh air into the house while also saving energy by reducing heating and cooling requirements. Since the house is so well insulated there is a need for fresh air. Of course, we could open the operable windows but that is not such a good idea when it is in the middle of the winter or summer.) There is A LOT going on in the basement!!! That is why I refer to the lower level as Operations Control Central.