Quote:
Originally Posted by retiredguy123
You main unit is probably only two tons. And if the mini-split is a one-ton unit, it is probably using half as much electricity as the main unit, assuming you use it a lot.
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That is incorrect. A 19 yo hvac is 11 seer a new one is 15. A new mini split is 22 seer. SEER is seasonal energy effficency rating.
In fact if you are only concerned about efficency you would use mini splits to cool your home.