With summers round the corner, eminent Texas real estate developer Marcus Hiles gives four tips to tenants and home seekers to drastically reduce their energy bills. Marcus Hiles, Chairman and CEO of Western Rim Property Services, follows these energy saving techniques himself in every home. First, he suggests employing windows with a solar heat gain coefficient of 0.22 to 0.24, for example, the Cascade Low E Argon Gas Win Pro Series. Old windows from the 1980s are likely to lose up to 100 times more energy in comparison to a fully insulated solid wall as heat begins to transfer. Even though older casements, transoms, and sliders are striking, having current windows and frames prevent air as well as energy leaks, cutting heat loss by three-fourth the amount, says Hiles.