WRONG! Misinformation on the internet about HVAC system sizing and what you should do instead.

There is all kinds of information out there about HVAC system sizing. None of them replace having a proper heat load calculation performed. You should have a professional calculate the exact size you need.

A big percentage of heating and air conditioning systems are installed when the house is built sized wrong from the start. So even replacing the system with a new one may warrant having a proper heat load calculation done.

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