Sizing
Size Is An Important Consideration
When Choosing A Central Air System. When choosing clothing, one size sometimes
fits all. Unfortunately, that's not the case when choosing a central air
conditioning system for your home.
Choose a unit that's too large, and it will cost more to purchase, more to operate and probably won't remove enough humidity from the air to make you feel comfortable. Choose a unit that's too small, and it will lack the capacity to give you the comfort you want on the hottest days. The best choice is a system that's just the right capacity for your home.
Experts all over the world agree that if an air conditioner has too much capacity for your home, the air will cool quickly, but you may not feel comfortable because the unit will not run long enough to remove the humidity. That's because moisture is removed as air is drawn across the cooling coil.
Central Air conditioning Sizing
Another disadvantage of an oversized central air conditioner is higher electric bills caused by the constant stopping and starting of the unit. A properly sized conditioning unit can actually run for longer periods of time with a lower energy consumption than a unit that's too large. Short operating cycles will shorten the life of the equipment. Make sure your contractors do not over size your air conditioning system .see duct design
On the other hand, a unit that's too small for your house may never get the job done on a hot day, even if it runs nonstop. sizing your central air conditioner is very important to your comfort level and energy savings.