The Downside of an Oversized Unit

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The Downside of an Oversized Unit

big ac unit

If you’re unhappy with your current HVAC system’s inability to heat or cool your home, you may have considered buying a larger unit. While this may seem to make sense – larger unit means more power – there are some cons to purchasing units on the big side of the spectrum.

  1. Big units frequently cycle between on and off. Also known as short cycling, large units work harder, use more fuel, and actually create more uncomfortable than comfortable atmospheric conditions.
  2. Big units can become easily damaged. Due to short cycling, a lot of “stress” is placed upon the unit and its parts. These parts fail a lot sooner than those of smaller units, causing quite the expensive repair bill.
  3. Big units have a shorter lifespan. Continuing with the issues in the first two reasons, big units often last only 10 years or less, as opposed to the usual 15-20 years.
  4. Big units create bigger bills. Energy is wasted with big units as the most energy is used once the unit comes on. Since it cycles between on and off throughout the day, you will see an increase in your utility bill.
  5. Big units create an inconsistency in temperature. This goes back to short cycling as well, as you will experience hot and cold zones throughout your home.
  6. Big units cause issues with humidity and provide poor air quality. These units don’t stay on long enough to remove moisture from the air, thus resulting in unbearable humidity, which can become dangerous (could cause furniture and/or computer damage, as well as the growth of mold/viruses/bacteria).
  7. Big units are noisy. Cycling on and off throughout the day creates a lot of loud noise.
  8. Big units are just overall expensive. They’re pricey to buy, pricey to operate, and pricey to maintain. Don’t overpay for something that isn’t going to provide the quality of air flow that you need.