Tuesday, March 4, 2014

Size and Power (Mini Split Air Conditioner Buying Guide)

Each indoor ductless unit offers a set number of BTUs of cooling power. For single-zone units, you simply need to know the number of BTUs associated with the indoor unit and make sure it fits the square footage you're cooling. 

For multiple zone systems, both the outdoor and indoor units have a BTU rating attached to them. One benefit of a ductless split system is each indoor unit runs independently.

Check out our square footage and BTU comparison chart below. Keep in mind if you're purchasing a multi-zone system, you need to look at the BTU rating for each unit (or zone). For example, an AC may use 30,000 BTUs total, with each indoor unit using 9,000 BTUs and the outside unit using 12,000 BTUs.


Area To Be Cooled (Square Feet)       Capacity Needed (BTUs Per Hour)

100 to 150 square feet                                     5,000 BTUs

150 to 250 square feet                                     6,000 BTUs

250 to 300 square feet                                     7,000 BTUs

300 to 350 square feet                                     8,000 BTUs

350 to 400 square feet                                     9,000 BTUs

400 to 450 square feet                                     10,000 BTUs

450 to 550 square feet                                     12,000 BTUs

550 to 700 square feet                                     14,000 BTUs

700 to 1,000 square feet                                  18,000 BTUs

1,000 to 1,200 square feet                               21,000 BTUs

1,200 to 1,400 square feet                               23,000 BTUs



Environmental conditions should also be taken into consideration when sizing your space for a mini split AC. If any of them are applicable to you, increase the number of BTUs by the percentage shown:

Environmental Condition


Ceiling Height: If your ceilings are higher than 8 feet, you should increase your number of BTUs (Increase 20%).

Insulation: Poorly insulated areas require more power to cool (Increase 30%).

Climate: In areas with seasonal temperatures often exceeding 90 degrees F. (Increase 30%).


Voltage
Voltage is another important consideration for your ductless mini split's power requirements. Smaller-powered mini splits use a standard 110- to 120-volt plug, which most homes are wired for, but larger units require higher voltage. These models use a 220- to 240-volt plug; make sure your home's voltage matches your unit's before purchasing. Using the incorrect voltage can cause the circuit to break, a loss of efficiency, or even cause a fire.



Contact: www.THEBESTMINISPLIT.com

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