Heat pumps are an energy-efficient alternative to furnaces, which are frequently powered by natural gas, a fossil fuel. Heat pumps can replace air conditioners and even hot water heaters.

By Matthew Goldstein Earlier this year, everything seemed set for a major renovation to make two Chicago apartment buildings for mostly lower-income elderly residents more energy efficient.

You may claim up to $3,200 in savings annually under the Energy Efficient Home Improvement Credit. Here are a few fast facts about this tax break: The credit is equal to 30% of the costs for all ...