Saving power is a sensible method to up the worth of your property. Adding a low-power boiler and AC is smart if you mean to continue on staying in the house for until you die. Something that could give you more ideas is searching for info on builders cleans. However, if you are thinking about selling the property, it really isn't a necessity as you could lose money on it. As long as the AC and heating plant is running the right way, I wouldn't care about it.