Is a Mini-Split System More Efficient Than Central AC?

Comparing Central Air vs. Mini-Split AC Installations 

Choosing the right cooling system for your home can feel overwhelming, especially with so many options out there. One of the most common questions we hear from families in Issaquah and surrounding areas is: “Is a mini-split system more efficient than central AC?” 

As your local HVAC experts, our team at Bob’s Heating & Air Conditioning is here to help break it all down. Here’s what each system offers and how to decide which is right for your family.

SEE ALSO: 5 Smart HVAC Upgrades to Make Your Home More Comfortable 

What’s the difference between a mini-split and a central AC system?

A central air system uses air ductwork to push cool or hot air throughout your entire home. 

A mini-split system (sometimes called ductless system) uses small wall-mounted units to cool or heat individual rooms. The mini-split is mounted high on the wall and connects to an outdoor unit. From there, it will suck in hot air from the top and disperse cold air from the bottom (and does the opposite in winter). 

Both options can deliver whole-home comfort, but how they do it, and how efficiently, can vary quite a bit.

So, is a mini-split system really more energy efficient?

It definitely can be. Mini-split systems create separate cooling zones, which means you’ll cool only the rooms you’re using and avoid wasting energy on spaces that aren’t occupied. That can be a game-changer for families with varying comfort needs or for homes with bonus rooms, basements, or add-ons.

Mini-splits also avoid the energy losses that often come with ductwork, especially if those ducts run through uninsulated areas like attics or crawl spaces. In the right setting, a mini-split AC installation can lead to noticeable energy savings and increased comfort.

Is a mini-split system right for every home?

Not necessarily. For open-concept layouts or homes with existing, efficient ductwork, central AC still makes a lot of sense. It’s a reliable option that can provide more consistent temperatures across the house. 

However, if you’re living in an older home without ducts or are building an addition, a mini-split might be your best bet. This way, you don’t need to install a new ductwork system, which can be costly. 

What about installation and maintenance?

A: In homes without ductwork, mini-split systems tend to be less invasive to install. Maintenance is important for both systems, but mini-splits have washable filters and typically require less frequent attention than ducted systems.

Whichever system you choose, Bob’s Heating will make sure it’s installed correctly the first time. Our team is committed to treating your home like it’s our own—because your family’s comfort is our family business.

Ready to Talk Cooling?

If you're weighing the options between central AC and a mini-split system, let’s chat. We're here to make the decision easier with honest advice and personalized recommendations. Contact Bob’s Heating to get started today!