I have learned the hard way that you have to be really careful about the people you choose to fix appliances and install them. Greenstar, for example, overcharges and does not have the proper equipment or well enough trained staff to do the right. They installed a defective AC unit in my house after insisting that the one that needed fixing needed to be replaced. I had another company come and look at the system they installed because I did not trust them after the reinstallation. They were the ones who told me it was defective and I had to buy yet another ac unit. Their’s actually worked.
