There is no doubt that the HVACR contractor is facing an abundance of changes and challenges all at the same time. So how do you prepare for all of this and stay afloat? You trust a couple ole' experienced professionals and learn what NOT to do. There are many things to consider when installing a heat pump, especially a high performance inverter driven heat pump. But make no mistake, if your sizing and equipment selection are wrong, you are going to have a disappointed customer.