Problems With Oversized Air Conditioning Systems

Make The Right Choice, Airy Time!

Problems With Oversized Air Conditioners

Is your air conditioner too big?

It is likely that you will notice at least one of the following three problems if your air conditioner is too large for your home:

  1. It starts and stops abruptly
  2. Humidity isn’t being removed by your AC
  3. Your energy bills are higher
  • When it’s hot, does your AC cool your home in 10 minutes or less? You might have an oversized air conditioner if that’s the case. An oversized AC will cool your house quickly then shut off, which raises your energy bills and wears out your AC (from all the starts and stops).

Indoor humidity levels should be around 30–50% with a properly sized AC. You’ll need a normal-length cycle for your AC to dehumidify your home. As we explained in the first problem, an oversized AC cycles on and off a lot. If your AC keeps shutting off, it won’t run long enough to remove moisture from your warm house. That could mean your AC is too big if your home feels really humid.

Often, an oversized AC will cool your home really fast, then shut off. That wears out your AC components and raises your energy bills. Basically, your AC has a bunch of motors that run different parts (like the compressor and blower). All of these motors draw more power when they start up than when they’re running. When your AC turns on and off frequently, its motors are using more power than they should, which raises your energy bill. If your energy bills keep going up, you might have an oversized air conditioner.

How'd you get in this mess?

It’s probably because the tech who installed your AC didn’t do a cooling load calculation. Cooling load calculations take into account things like:

  • You’re home’s square footage
  • How many rooms you have
  • How many windows and doors you have
  • Your climate
  • Your home’s insulation
  • How’s your ductwork?
  • Does it leak?
  • Plus a lot more
All of these factors are taken into account when a tech recommends an AC size for your home. Unfortunately, many HVAC techs either don’t know how to do a cooling load calculation or they just skip it. 

What makes a tech skip a cooling load calculation? Let’s say your old AC is 3 tons. Your tech might suggest simply replacing the 3-ton AC with a new 3-ton. What if your old 3-ton unit was already too big? If you replace an oversized unit with another oversized unit, you’ll still have the same problem. 

If your air conditioner is oversized, what should you do? Contact a professional AC contractor to inspect your AC and perform a cooling load calculation. Only then will you know if your current AC is oversized. Airy Time is located in Lebanon, Indiana the county seat of Boone County, and serves communities throughout Central Indiana.

Service Areas

  • Arcadia
  • Atlanta
  • Carmel
  • Cicero
  • Fishers
  • Indianapolis
  • Noblesville
  • Sheridan
  • Westfield
  • Alamo
  • Crawfordsville
  • Darlington
  • Ladoga
  • Linden
  • New Market
  • New Richmond
  • New Ross
  • Waveland
  • Waynetown
  • Wingate

Your Neighbors Love Us

Gil Cook
Read More
All of my experiences with every time have been outstanding. From installing a new humidifier to emergency furnace repairs, I have never been disappointed. Competent, professional staff who can explain things so that a non-technical person understands.
Debra Delaney
Read More
Daryl is/was professional, polite and an all around very nice gentleman. And kudos to him for also being a veteran. We had a friend recommended Airy Time and she had me when she said that it was ran by vets. I am proud to be an American and even more proud of those that fought to allow us our freedoms. I will be recommending Airy Time to others. Thank you for you quick turn around. I made an appointment online at 6:30 on Tuesday for a time slot between 7-9 and was pleasantly surprised that someone actually showed up in that time frame. And then to boot they were able to get us in for an install today, Thursday. So we were only without air for approximately 2 1/2 days. Professional, courteous and fast!!!!
Courtney Clark
Read More
The BEST service call we have ever had. Daryl was so kind, professional and educating on our issues. I not only purchased an annual membership but I have requested to only have airy time come out for any of our heating and cooling issues! Thank you so much for getting my heat back on and making my Monday!
Ashley Ray
Read More
Airy Time is incredible and I would highly recommend them. We had two separate issues within a week and Buddy came out to fix both issues. He explained everything to us and was incredibly personable. We will absolutely continue to use them for future heating and cooling needs!
Dabbie Williams Beck
Read More
We called to have them look at our furnace and the came that day within 30 mins of calling them. Very friendly and explained everything they were foing. Thank you for the excellent customer service.
Josh Nugent
Read More
Daryl was awesome! Came out same day and got me up in running in no time. Quickly diagnosed the issue, determined fix, and took care of it. He was very friendly, professional, and I really appreciated him explaining to me the problem and how the system should work and how it was prohibiting it. Will definitely use them again
Tammy Canty
Read More
They installed my furnace and HVAC all in one day. It was snowing and cold and they both did an excellent job. They both are professional and very kind. They were on time. Good value and they worked hard to complete the entire job in one. day. I will be recommending Airy to friends and family. Thank you!
Katheryn Burns
Read More
Trey is fantastic. Our furnace and HVAC needed completely replaced and we were panicking because the temperature is forecasted as -3 this weekend and we have a newborn. They were able to help us through the financing process and completely replace our HVAC within two days. They were also delightful to deal with during the install.