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  • How to Tell If Your AC Unit Is Too Small for Your Home

    Energy Air

    Whether you’re buying a home or building one, the HVAC system is a special point of concern for most homeowners. The quality of your HVAC system will probably make the biggest difference in your day to day happiness with your home.

    Do you have a sneaking suspicion that something is up with your HVAC system?

    If you’re not happy with how your AC is performing, read these 4 signs that your AC might be too small for your home.

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    High Electric Bills

    Were you sticker shocked by your last electric bill? The first sign of real trouble with their AC systems that most homeowners get is from their power company! Ask friends with similar home sizes to you, preferably who use your same power company, what they pay every month for electricity. If you have several months in a row with a $300, $400, or even $500 power bill – your AC might be too small.

    Your House Never Gets Cold

    The surest sign of an undersized AC system is if you struggle to get your home under 79 degrees. AC units used to be designed to take a space from incredibly warm to incredibly cool in one long, continuous cycle. Today’s air conditioners are designed a little bit differently than air conditioners of yesterday. Now they’re meant to cool your house slowly over time.

    It’s more about keeping your air at a constant temperature and making small adjustments, so it’s normal for a modern air conditioner to be a little slow when taking your home from very hot to cool. But at a certain point, if you’re finding it’s impossible to consistently or easily keep your home below 79 degrees than an undersized unit may be the culprit.

    Long AC Cycles

    In the basic air conditioning cycle, warm air is pulled into your system where is undergoes an evaporation, compression and condensation process. As a result, the warm air is cooled. This cool air is dispersed throughout your home, while the remaining warm air is pushed outside.

    Again, there’s a key difference in the way that today’s AC units are designed to cool and how the AC units of yesterday were designed. It was not uncommon for air conditioners of the 50’s and 60’s to run most of the day, if not all day. A big design change came in the 1970’s with the energy crisis which directed manufacturers to change the way they made HVAC units, according to the US Department of Energy. Modern air conditioning units instead are designed to cycle for a shorter period of time, but more frequently.

    Does your air conditioning regularly cycle for longer than 30 minutes? Even in the warmest areas of the country like Florida and Texas, a properly sized air conditioner should not regularly cycle for significantly longer than 30 minutes. If your AC is consistently running all day, you may have an undersized unit.

    Let’s Get a Little Technical

    If you suspect that your air conditioner is undersized, there’s a quick equation that “old-school” contractors use to find the recommended tonnage for the home.

    ((House square footage x 30/12,000) – 1.0) = Required Tonnage

    Keep in mind that this equation will undersize the unit in extremely hot climates like Texas or Arizona. Instead of subtracting 1.0, subtract 0 for hot or arid climates.

    AC Replacement In Orlando

    Do this quick back-of-a-napkin equation, and if you still believe your AC is too small for your home then get in touch with an HVAC professional right away! Give Energy Air a call today, or easily schedule a no-hassle appointment online and we’ll help you replace your undersized AC.

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