It's part of a new retrofit program the city has launched with ComEd, Peoples Gas and other utilities. The city estimates owner could save big money in utility costs by fixing up old buildings.
Those who qualify would get grants to help pay for efficient light bulbs, insulation and rebates for purchasing new water heaters.
"Goes a long way towards helping people to save money and embrace sustainability. This is something we've been encouraging since I've been alderman here for close to 5 years," Ald. Sandi Jackson, 7 Ward, said.
Right now the retrofit program is available only in 12 neighborhoods.