A mini-split is not a one-size-fits-all for every space. Knowing how to size a mini-split system is crucial for ensuring optimal comfort and efficiency within your space. So, what size of mini-split do you need?
What Is a Mini-Split System?
Before we delve deep into what size mini-split unit you may need, let’s first understand what a mini-split system is. Mini-split systems are ductless heating and cooling solutions that consist of an outdoor condenser unit and one or more indoor air-handling units.
Why Mini-Split Sizing so Important
Sizing in an HVAC system refers to the amount of cooling or heating the system can produce per hour, expressed in BTUs or British thermal units per hour. A mini-split that is too large for your space can cause short cycling, where the system heats the room quickly and then goes off. If the mini-split is undersized, it may work harder than a properly sized one. That said, properly mini-split system sizing may not only keep you comfortable for an extended period but save you energy in the long run.
What Size of Mini Split AC Do You Need? How To Estimate
To estimate the size of the mini-split AC you need for your room, start by determining the room size in square feet. If you have a rectangular or square room, measure the dimensions and use the formula Length x Width.
For a circular room, measure the distance from the wall to the center of the room. Multiply the number by itself, then by 3.14159 (π).
Once you calculate the area of your room in square footage, convert it to BTU by multiplying it by 25. This will give you an estimate of the BTU needed to cool or heat your room.
For example, what size of a mini-split unit do you need to cool a 300 sq. ft. room? Multiply 25 x 300 sq. ft., and your estimated value is 7500 BTU. This means you will need a mini-split with around 7500 BTUs to cool a 300 sq. ft. room effectively.
Hire an Expert to Determine What Size System You Need
For an accurate estimate for a ductless mini-split in Apple Valley, contact Air Rite Mechanical Systems. Our knowledgeable HVAC technicians in Apple Valley, MN can assess your area and help you come up with the right mini-split size. Schedule an assessment today!
