Offices, department stores, city buildings and restaurants may be getting a little chillier soon with the Health Department's proposal to lower the minimum required temperature from 68 degrees to 65. Of course, tenants of those buildings would have to agree to any such change—many properties set the minimum temperature at 70 in their leases. The city agency is trying to sell the drop as not only friendly to the environment, but a way to save money. That might not be enough, with the president of the Real Estate Board of New York telling the News, "What is needed is more energy-efficient retrofitting - more efficient windows, for example, so heat doesn't escape." With the climb towards warm weather underway (knock on wood), might we see another round of battling between the city and businesses who insist on blowing cool air out their front doors on hot summer days?