On Tuesday, President Joe Biden signed the Inflation Reduction Act into law. Among other things, it allocates about $370 billion for climate-friendly technology and programs. This includes tax rebates and credits to incentivize Americans to replace their old air conditioners or furnaces with heat pumps, which can be used for both cooling and heating homes and are more energy-efficient than traditional systems. But making the switch can be costly for households. Marketplace’s Kimberly Adams speaks with Alexander Gard-Murray, a postdoctoral fellow at Brown University’s Climate Solutions Lab.