The Essentials of Air Conditioning System Sizing


AC unit size is ranked in heaps as well as the dimensions offer rise in 1/2-ton increments. The ordinary industrial AC dimension varies from two bunches for small structures to as long as 30 loads for huge buildings.

A 1-ton AC system can eliminate around 12,000 BTU, or British Thermal Devices, of warmth per hour. To recognize what dimension AC unit your structure calls for, you’ll need to determine the structure’s air conditioning tons in BTU. The cooling load is the quantity of warmth the air conditioning system has to eliminate from a building to preserve a comfortable temperature.

Several aspects influence a structure’s cooling tons, including the structure’s design, its weatherization, as well as the amount of sunlight it gets.

Approximating Your Ideal AC Size

If you’re intending to set up a new air conditioning unit, you can determine the approximate dimension you’ll require.

  • Calculate the square of the space, you wish to cool down. Note that the calculation thinks 8-foot ceilings, as well as a space with greater ceilings, will call for a bigger system.
  • Divide the space’s square foot by 500.
  • Increase the number from Action 2 and by 12,000. This is the variety of BTU your system will need to eliminate to cool the space.
  • Include 380 BTU for each individual that operates in the space all day. If the number varies, take a standard.
  • For each window in the room, include 1,000 BTU. For each and every cooking area, include 1,200 Btu.

The outcome of this computation gives you an approximation of the minimal BTU of cooling capacity your air conditioning unit has to have.

If you have a 5,000-square-foot space, separate that number by 500 to get 10. 10 times 12,000 is 120,000 BTU. If four individuals function there, include 1,520 or 380 BTU x 4. If the room has three windows, include 3,000 or 1,000 BTU x 3. This space will require a commercial AC size with 124,520 BTU of cooling.

Remember, however, that AC units are rated in tons. To identify the size of the system you’ll require, split the amount of BTU you need by 12,000. For example:

  • 100,025-125,000 BTU is 8-10 tons
  • 125,025-150,000 BTU is 10-12 tons
  • 150,025-175,000 BTU is 12-13 bunches

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