So far we have discussed one of the active climate control systems, Geothermal, utilized in the Ellis Residence. As construction moves right along, we would like to introduce you to the installation of the first passive system, Thermal Mass. A two story concrete masonry wall along with concrete floors act as a heat sink for the warm rays of the sun. The thermal mass stores the heat and then slowly releases the heat at night, effectively using daytime heat to warm the cool night time air. The effect is a stabilization of temperatures so heat swings are minimized and interior comfort is improved.