Choosing The Right Size HVAC System For Your Home

Date Published: April 22, 2022
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Bigger isn’t always better when it comes to your heating and cooling unit. The size of your unit needs to be specific to the size of your space for optimal heating and cooling. This blog will help you decide the right size HVAC system for your home to make sure you stay comfortable.

Why Size Matters

Too Small: Units are designed to heat and cool a certain sized space. If you install an undersized air conditioning unit, it will struggle to cool your home. This will overwork the system and raise your energy bill.

Too Large: An oversized unit is programmed to heat and cool larger spaces. If your space isn’t the size intended for this unit, it will cool the space quickly and shut off. You may be thinking, “What’s wrong with that?” When the space starts to lose the desired temperature, the unit will turn back on, re-cool the space, and shut back off. The constant off and on can cause damage to your unit.

How To Calculate Size

One of the main deciding factors will be the square footage of the space you need to cool. Multiply your square footage by 25 to calculate a rough estimate of how many BTUs needed to cool your space. A rule of thumb is it takes about 25 BTUs to cool one square foot.

Other factors to consider in your calculation:

  • Sunrooms
  • High volume rooms
  • Number of windows

Call one of our trained professionals to evaluate your space and help calculate these other factors.

How To Choose A Unit

The calculation of your home will help decide if you need a split system, packaged unit, or mini split system.

Split System: A split system has both indoor and outdoor units connected by copper tubing. Split systems are typically best for larger homes.

Packaged Unit: A packaged unit contains all parts for heating and cooling in one outdoor unit. Packaged units are best for smaller spaces and individuals looking for an all electric system.

Mini Split: Mini splits allow you to control indoor temperatures in specific rooms or spaces. This is a good option for someone looking to heat and cool a desired space rather than the whole house.


Related Article: Ductless Mini Splits vs. Central Air Conditioning


Let us help decide what HVAC unit is best sized for your home. Give us a call at (937) 222-4100 to help keep you comfortable this summer!

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Email: universalhtg@yahoo.com


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