Quote:
Originally Posted by Spartan86
Forgive me if I missed it in the details: if I wanted to change to a variable speed system from my current conventional one, it requires both a new exterior unit and a new air handler correct? Both the compressor speed and the house fan speed are variable?
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That's correct. Since it's a communicating system where the thermostat, airhandler and condenser all "talk" to each other to determine and set the most efficient speed to run at, at any point in time, everything needs to be replaced.