I just ordered an info packet from my local utility that provides an interest free loan for installing a heat pump. I have all the duct work and an electric furnace already so I'm curious how much the addition of a heat pump would run. The loan is a maximum of $7,000 over five years. I'm thinking I wouldn't need that much. My house can get pretty warm during July and August so I've been looking at window installed or portable air conditioners. The one I would LIKE to get if I go that route is the Maytag from Home Despot for 500.00. But if the addition of a heat pump is around the 1500.00 range I figure that's a better way to go. Thoughts?