June sought estimates from several HVAC companies and was especially intrigued by Redinger’s suggestion that a wall-mounted heat pump might be the ideal solution. Not only was the food bank stiflingly hot in the summer, but it was also uncomfortably chilly in the winter. A right-sized heat pump could address both of those problems.

The wrong size heat pump can cost you money. Here's how to know what you need if you're switching your HVAC system.