With summer approaching, eminent Texas real estate developer Marcus Hiles gives much-needed advice to tenants and home seekers to radically reduce their energy bills. Marcus Hiles, Chairman and CEO of Western Rim Property Services, follows these energy saving practices in every home. First, he advocates employing windows with a solar heat gain coefficient of 0.22 to 0.24, such as the Cascade Low E Argon Gas Win Pro Series. Old windows belonging to 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. Older casements, transoms, and sliders may be attractive but having current windows and frames prevent air as well as energy leaks, cutting heat loss by as much as 75%, says Hiles.