Is there a difference in power consumption between 1 big a/c and multiple smaller a/c's?
Question:for example, my studio apt is 70 square meters, loft style (meaning one big area). There are currently 2 a/c units, 12500 btu each. I turn on both during the daytime. Would I be paying less for electricity if I only turn on 1? Would I be better off replacing the two with one bigger one?
Answers:
The highest cost of running the equipment is the start-up. That is when the units draw the most amps.
With this in mind two units drawing start-up power will easily cost more than one unit starting. Another advantage to one unit is the cost of installing and maintenance. With today's low efficiency units your energy cost saving could pay for the equipment in just a few years. Of course this depends on the age of your existing equipment.
The final consideration is to calculate how the existing units are zoned. Another words is one unit conditioning upstairs and the other down stairs? If both units are conditioning the same area (Loft) then one unit would be much more economical.
It's all about amps
They say that if you leave the same heat or air the same all day, it's more economical, because if you turn off one A/C and turn on the other one, it will take longer to reach the level of comfort you want. Go to a store and compare the amps.You may want to contact a professional (heating & A?C contractor) who knows the ends and outs about the fastest and less costs of reaching the level of comfort air in your apartment.. I would probably call city to see if they have anyone who can answer your question. Check how many square feet a large A/C covers as well. Good luck
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