Now is the best time to weatherize your home to get ready for winter says the Iowa Utilities Board. This would include low-cost air leak solutions such as caulk and weather-stripping materials.
Alliant Energy Spokesman Justin Foss says gas heating customers can qualify for a free home energy audit to examine insulation levels and others ways to save money this winter.
He also recommends having your furnace inspected every year. Other home weatherization tips can be found by looking at the link.