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Jan 16, 2020
posted by: McCall's Supply, Inc.
How to Choose the Right Size HVAC Unit for Your Home
One of the most common general HVAC service questions is, “What size HVAC unit do I need for my home or commercial building?” When it is time to consider a new unit, how do you figure out what size is best suited to your needs?
Not the Easiest Calculation
You can get an estimate of the required size by calculating the square footage (length x width) of the space to be heated/cooled. Unfortunately, this basic calculation doesn’t take into account climate, how many people live and spend time in the house, additional appliances that generate heat, and other important factors. All of these are necessary to get an accurate calculation.
Getting the Size That’s Just Right
It is important to get the proper size unit for the space. If the HVAC system is too small, it won’t be able to adequately meet the heating and cooling needs of the space and the people who live and work there. If the HVAC unit is too large, it won’t operate efficiently, may wear out faster, and create higher energy bills year-round.
The Manual J Calculation
The most thorough and accurate calculation is the Manual J. Based on a complete energy audit of the building or house, it can tell where you use electricity and where you can save. Check with your utility company or your HVAC technician to find out about an audit for your home. Using precise energy audit calculations, your HVAC technician can recommend the correct size of unit best suited for your needs.
If you are in the market for a new HVAC system, call the professionals at McCall’s Supply right now. Our friendly, knowledgeable experts have the answers to all your general HVAC service questions.