Is it a good idea to upgrade to a better or more highly efficient system?
This question is dependent on the length of time the owner is planning on being in the home and the cost of the system. Higher efficiency comes at a higher cost that if it is maintained for several years it can pay off by having lower utility bills. Generally speaking, if the owner is planning on being in the home for 5 or more years, the price difference may be worth the cost difference.
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