Quote:
Originally Posted by 784caroline
Do not know the answer to your question BUT even if it is taxed, its a small price for more room space that provides total comfort by eliminating supressing heat, mildew, and dirt from the outside.
The added tax, if there is any, should be the last consideration.
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I would think that the ac system that is in your house was designed to just do the house. By adding heat and ac vents you might be pushing your heat pump/ac to an early failure . That can be a very big expense to replace. A better solution would to put in a system called a mini split. It's a additional small unit that is designed for these kinds of situations.