How Important Is It to Get the Right Size HVAC Equipment?

The size of your heating and air conditioning units will determine how well they work and how long they last.

When it comes to heating and air conditioning equipment, ordering the right size is essential to proper operation. Undersized units will run continuously, wearing out early and driving up your bills. Oversized units will cycle on and off, leading to ineffective temperature control and early system failure. There’s no way to modify poorly sized units either, so make sure you work with a professional installer who has plenty of experience.

Look at just a few of the considerations expert technicians make when sizing your HVAC units:


While size is a major factor when determining how much heating and cooling power you’ll need, it’s not the only issue. Many variables impact the best size of HVAC product for your property, and the best installation teams know them all. Talk to your tech about how the best size for your home will be determined.


A two-story house with rooms in the attic has much different heating needs than a ranch with a finished basement. Square footage is just the beginning of judging a structure’s heating needs. Layout and overall home design make a big impact. Expect a technician to visit your home before any units are recommended.


Older homes often have more drafts and gaps in construction. They may also need updated insulation. It isn’t uncommon for an older structure to require quite a bit more heating power than new construction or modifications before a new system is installed.

Truly, these characteristics are just the tip of the iceberg when it comes to picking the perfect heating and air conditioning equipment for your home. Professionals like the NATE-certified technicians at Carolina Comfort, Inc. can help you choose a model capable of keeping your property comfortable at the lowest cost.