Quote:
Originally Posted by Dave Lane
Not true. If you think of it in simplistic terms imagine a 5 ton AC unit that has to cool 3000 sq ft. Now imagine all ducts are closed off but one 500 sq foot room (with the thermostat there). It will cool that room much quicker and cycle off much faster (other considerations of wear and tear aside for the moment).
Now is it safe and is it worth the savings is an entirely different argument but all things being equal smaller sq footage = energy savings.
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No this will not work like you are thinking at all.
Blower are sized by the size of the system that they are put into.
If you have a 5 ton Air Handler it has a motor and a blower wheel sized to move 2000 cfm's of air. If you restrict or block off half of the registers in your home it will make the blower slow down because it can't move that air. Then that air becomes a restriction. When the blower slows down it won't even be able to pull half of the normal amount of air. Also when you do this and it can't move enough air across the coil and that will cause the coil to freeze up. Along with all of this you are making that motor work hard pulling more amps, costing your more energy, as well as the motor uses that air to keep itself cool.