Another way of looking at that up-front cost is that it's basically an extra $100 when you install an air conditioning system, or that you get an air conditioni

Another way of looking at that up-front cost is that it's basically an extra $100 when you install an air conditioning system, or that you get an air conditioning system for free along with your heating system. This is very relevant in Washington where we historically didn't need AC but with hotter summers it's starting to become a requirement for comfort. So there are lots of houses that have never had AC that need a system installed.