House design affects your home temperature, but it can also help to mitigate the effects of heat retention and loss in the home. Everything in the house can make a difference, from your roofing material and the color of paint on your walls to the carpeting on your floor and the placement of the furniture in the rooms. By using simple energy efficiency techniques, you can save energy and money on your electricity bill. Roof color and material Roofs that are lighter in color tend to reflect the heat. Roofs that are darker in color absorb the heat and transfer it into the rooms below. Materials like metal or rubber are also more reflective than asphalt shingles. A cool roof is currently the best way to save energy and money …