Ductless HVAC systems heat and cool homes without traditional vents. Individual units are installed in different spaces so that homeowners can control each room individually, and the appliances are connected to a central condenser via wiring. Choosing the proper size for each unit is essential, and an HVAC contractor can help you get the right output to optimize comfort and energy efficiency. Here’s what you should know about sizing before getting started. 

Why Sizing Matters

HVAC systems are optimized to heat and cool spaces of particular sizes. If the system is too small, it will need to run continuously and may still not reach the desired temperatures. 

However, selecting a unit that's too large may lead to short cycling, which occurs when the equipment only runs for a short time and then stops. This is inefficient and can wear down the equipment prematurely. Larger systems also cost more to purchase and install, so they may negate the energy savings you hope to get with a new HVAC unit. 

How to Choose the Proper Size

The output of ductless systems is measured in British thermal units, or BTUs. Small rooms of about 250 square feet or less only require about 5,000 or 6,000 BTUs. Larger spaces of 2,000 square feet or more require at least 30,000 BTUs. 

To calculate the square footage of a room, simply multiply the length and the width of the space. However, other factors may also impact heating and cooling ability. 

For example, high ceilings require extra BTUs because there's more vertical space in the room. Poor insulation and excessive sunlight may also require extra output since air can easily escape and extra heat energy is constantly added to the space. 

The experienced HVAC contractors at A New Image Heating & Cooling will help you select the proper size when installing a ductless system. Based in Warrensville Heights, OH, these professionals offer installations, repairs, and maintenance for a wide array of heating and cooling equipment. The expert team will help you choose a system that's optimized for your space and provide friendly and helpful service throughout the process. Visit the website for a full list of options, or call (216) 896-9500 to speak directly with an HVAC contractor.