I think, if you check on it, many cities, states and the Fed Gov. offer low interest loans or rebates for home improvment and *Green* solutions.
We got back $1500 on our heatpump.
Every little bit($1500 rebate)helps. What should happen though is a vast national effort to insulate homes/buildings. Cats, dogs, mammals are born with insulating fur, as are birds with insulating feathers; why are so-called genius humans so far behind nature’s way of handling heat loss?