Tax season is behind us and for many it is now the season of refunds. Armed with varying sums of money they didn’t have a short time ago, many consumers are out there looking for something to buy. Vacations and frivolous impulse purchases are at the top of some lists, but others are looking to invest in energy-efficient products that save money and help improve the value of their home. One of the prime investments in home improvement is the HVAC system, and one of the options that many contractors are offering to their customers is the heat pump.