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How Improper HVAC Sizing Harms Your Family’s Comfort

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Are you having trouble with your home’s HVAC system? Is it overcooling your home or not heating it sufficiently? Chances are that you have an improper HVAC system for your home. Learn about some of the key reasons why you improper HVAC sizing can affect your lifestyle.


Image via Flickr by bark

Ways Improper HVAC Sizing Affects the Home

Annoying Hot and Cold Spots 

Have you ever experienced hot or cold spots within your home? You could be a victim of an improperly sized HVAC system. These spots occur when either your HVAC system cannot circulate air sufficiently (it’s undersized) or it delivers too much heating or cooling (it’s oversized), leaving some rooms excessively hot or cold. 

Poor Relative Humidity

Optimal indoor relative humidity should be between 40 to 50 percent. Relative humidity higher than 50 percent could be life threatening to people who suffer from asthma and bronchitis-related complications. The home environment also becomes conducive to biological growth and dust mite infestation. 

On the other hand, very low humidity results in dry air, which can irritate your throat and lungs. That environment creates an uncomfortable home to live in, right? HVAC systems have built-in mechanisms to regulate this humidity as they circulate air and drain condensed moisture. However, an improperly sized unit will not achieve this humidity range.

High Energy Bills

When your HVAC system keeps running for hours without delivering the home comfort results you expect, your energy bills are increasing unnecessarily. A properly sized HVAC system should cool or warm a room significantly within two to five minutes after turning on.

Similarly, you may think that an undersized HVAC system can save you money on energy usage, but it doesn’t. You will only save on the initial cost of purchasing the unit. However, the longer your HVAC system runs, the more energy it consumes. 

Shorter Operating Lifespan

When you overuse or don’t use your HVAC equipment properly, you subject it to much operating stress. While you may service your system regularly as instructed, some parts may still be affected by the excess operating load. For example, a properly HVAC system attains the required temperature quicker without short cycling.

Multiple shutdowns and startups could signal the beginning of endless repairs. With time, the entire HVAC system itself may fail beyond repair. While you may be able to pay for repairs, the costs may be almost equivalent to installing a new HVAC system.  

Sizing Your HVAC System Correctly

Contrary to popular belief, getting an oversized HVAC system for your home won’t deliver better results. Improper HVAC sizing is not good at all.

While you will experience faster cooling, your system’s operating lifespan may be compromised. Proper HVAC system sizing is vital if you want to enjoy maximum comfort in your home. 

The above reasons are only a few to emphasize why you need to consult a qualified HVAC technician to properly size your unit. Have you heard about the ACCA (Manual J) load calculation? ACCA Manual J is the correct way to size HVAC systems. And it’s something your HVAC technician can help you calculate.


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Loving Mama

Sigrid - Bacolod Blogger
Sigrid is a work at home mom and Bacolod blogger who tries to juggle taking care of the kids, homeschooling in Bacolod, covering events, designing, writing, and blogging. After finishing her degree in Mass Communications from the University of St. La Salle, she went on to become a news reporter/writer for a local daily and eventually pursued a career in advertising as a copywriter and graphics designer. After her stint in the corporate world, she became a freelance writer, contributing to national and international publications covering a variety of topics. She was a contributing food writer to COOK Magazine before she became a food and mommy blogger. She blogs at:
www.sigridsays.com
www.lovinglymama.info
www.mamacooks.info
www.marriagemarkers.com

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