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2 Room addition of 700-800 sq ft
Currently I am in the process of enclosing my existing 30x20 patio and extending the current living area along with adding an office space. My home is originally at 2175 sq ft with a 3 1/2 ton heat pump hvac system ten years old. Runs perfect some problems in the past but all repaired.
My question is what would be the best option for my addition. It would obvisouly require two new ducts in living area and one in the office space. Do I upgrade system to newer models if so how much more do I require and which system. Or I here there are new more practical systems "mini split ". What are the pros and cons and of course price difference? Thanks in advance