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How To Pick The Right Size AC Unit

July 24, 2022 | Blog

How Do You Know What Size AC You Need?

Are you and your family feeling unprepared for the summer heat because you haven’t decided on an air conditioner? At Service Wizard in Austin, TX, we’re committed to eliminating any air conditioning uncertainties and helping you feel cool, calm and comfortable no matter how warm the weather is outside.

Though choosing the most prominent and flashiest unit may seem like the best option, our professional technicians know how to find the perfect system for your home and save you lots of money along the way. Our staff is trained to assess the size of your home when calculating what unit size you need, and they’re capable of completing AC replacements or first-time installations quickly and efficiently.

Making sure your home is comfortable in any season is a top priority for all of us at Service Wizard, which is why we pride ourselves on offering quality service and respecting your budget. Read on to learn more about why we emphasize AC sizing, and contact us if you need service!

Why Your Air Conditioner’s Size Is Important

There are many reasons why your unit’s size is critical, but some of the most important ones are as follows:

Energy Efficiency

If you purchase an air conditioning unit that is too small for your home, your system could wear out quicker and experience power failure due to extensive amounts of time in its energy-wasting startup phase. If your air conditioner is constantly turning on and off or initiating its startup phase, it is being short cycled. Short cycling uses up a great deal of energy and requires more repairs in the long run.


If your unit is too small or too big, it can also have a hard time reaching and maintaining your thermostat’s threshold. Different components in your appliance are more likely to need replacing because of their inconsistent usage, creating more of a hassle for you.

For both of these problems, our HVAC professionals have your back. Service Wizard consultations center around inspecting your system and making sure it’s the right size for you and all your cooling needs.

How To Measure Your AC Unit

Making the measurements needed to figure out what AC unit will serve your home best is simple for us over at Service Wizard. We calculate the size of your spaces by multiplying the length by the width of the room and then multiplying the total by 25 British Thermal Units. British Thermal Units, or BTUs, measure cooling capacity.

Call Us At Service Wizard Today

Ready to enjoy some relief from the hot stickiness of summer? Our friendly staff are happy to make your home an air-conditioned haven whenever suits you best! Whether you’re researching AC installations, maintenance or repairs, we can make your space more comfortable and cool through enhanced air circulation.

Contact the Service Wizard team to learn more about our fantastic deals on memberships, services, cooling load statistics and energy-efficient products, or call us today!

Why Choose Service Wizard?

Professional Team
Professional Team
Our customers mean the world to us. That's why our team holds ourselves to the highest standards of behavior and service!
Reliable Service
Reliable Service
You can count on our team to provide dependable services. When you need us, we always show up.
Flexible Financing Options
Flexible Financing
We believe in focusing on the comfort of you and your family, so we offer financing options with approved credit for your convenience.

What Our Customers Say

Earned My Loyalty

My technician, David, showed up promptly, was very courteous, wore a mask, and did a great job. He also talked me through how I could maintain and clear the drain line clean myself going forward. Service Wizard has earned my loyalty for future service calls!

Jordan C.

Very Knowledgable

We have been customers of Service Wizard for long time. They installed our new more energy-efficient units several years ago and continue to provide service to us. They are pros! The service techs are very knowledgeable and great to interact with. They take the time to explain the service. Great company to do new installs and service the units!!! Very pleased.
Daniel A.

Always Professional

These folks are the best. I’ve had a half dozen interactions with them over the years. Always professional. They hire the best people and do the best work, and are price competitive as well. I can’t think of a reason to call anyone else.

George G.

Answered All Our Questions

Service Wizard has been taking care of our old HVAC system for years. We especially appreciate Emilio for his care and expertise and willingness to answer our many questions!

Lydia L.