
Mini Split Room Sizing Guide
How to Properly Size Your Mini Split
Proper mini split sizing is the important first step in upgrading your home's level of comfort.
What Size Mini Split Do I Need?
Use our free mini split sizing too below for an estimate of your heating and cooling load needs.
866-554-HEAT (4328).
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Call Us Toll Free: 1 (866) 554-HEAT (4328) Monday - Thursday: 8am - 6pm CST Friday: 9am - 5pm CST Saturday and Sunday: Closed |
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* MRA - Moisture Removal Allowance: It is typical for roughly 30% of your air conditioner's capacity to be used to reduce the humidity in your home. Disclaimer: This sizing tool, although based on a version of the ACCA Manual J, is for informational use and is intended only as a guide to assist with finding the best product for your needs. Since the calculations are based on the information provided, Power Equipment Direct, Inc. assumes no responsibility for inaccuracies resulting from improperly sized equipment. For a complete, professional sizing estimate, please call us at 866-554-HEAT (4328). |
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Call Us Toll Free: 1 (866) 554-HEAT (4328) Monday - Thursday: 8am - 6pm CST Friday: 9am - 5pm CST Saturday and Sunday: Closed |
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* MRA - Moisture Removal Allowance: It is typical for roughly 30% of your air conditioner's capacity to be used to reduce the humidity in your home. Disclaimer: This sizing tool, although based on a version of the ACCA Manual J, is for informational use and is intended only as a guide to assist with finding the best product for your needs. Since the calculations are based on the information provided, Power Equipment Direct, Inc. assumes no responsibility for inaccuracies resulting from improperly sized equipment. For a complete, professional sizing estimate, please call us at 866-554-HEAT (4328). |
Mini splits are extremely efficient thanks to their inverter technology that enables your system to generate only the amount of heating or cooling needed to maintain the desired temperature. Even so, you'll want to ensure the system is properly sized for your home.
Although energy-efficient, if the system is too small, you'll find yourself wasting energy while your unit runs continuously, all the while failing to keep you comfortable in extreme conditions. This lack of performance will leave you on the hunt, yet again, for a better solution.
On the other hand, if the system is too large, you'll spend more on equipment and throw any energy savings out the window. Oversized equipment will also fail
prematurely due to short cycling (turning on and off frequently).
The bottom line is this: Improperly-sized equipment leads to decreased comfort, lower efficiency, increased service costs, and premature failure.
How to Size Your Mini-Split
Mini-splits are sized in BTUs (British Thermal Units), which measure the amount of heat needed to raise the temperature of one pound of water by one degree Fahrenheit.
Our calculator leads you through some brief, yet specific, questions about your space and provide the best sizing estimate you'll find from an online tool.
If you're looking to buy a multi-zone system, use the tool once per zone to get sizing estimates for each indoor unit (outdoor unit sizing for multi-zone systems may require additional calculations beyond the tool's capability).
Why Are Some Systems Measured in Tons?
Often times, you'll see central air systems measured in tonnage. While this term sounds like a measurement of weight, it has nothing to do with weight at all. Tonnage is a term used in the HVAC field that describes how much heat the system can remove from the indoor air in one hour.
Mini-splits aren't measured in tonnage because they are sized for smaller spaces. Instead, they are typically measured in BTUs (British Thermal Units). This is a much more universal system of measuring a condenser's ability to heat and cool an indoor area. You can convert tonnage to BTUs (1 Ton = 12,000 BTU) if you'd like to compare the two.
Get Custom Comfort
Now that you know the basics of sizing, take the next step by building your own custom mini-split system.
Next: Mini Split System Builder
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