22 Sep 2020

What’s up with those small HVAC units that hang high on walls?

Ductless Mini-Splits

What’s up with those small HVAC units that hang high on walls? Maybe you’ve seen them in an office building, someone’s home, or on one of those home tour TV shows.

Here’s the scoop. They go by a few different names, including mini-split systems or ductless mini-splits. They’re a popular alternative to those inefficient window air conditioners, space heaters, and electric baseboard heaters. If you’re thinking, I already have a whole home HVAC system. I have no need for something like this, here’s some food for thought.

Homeowners throughout Arizona are realizing that, while their central system does a great job of cooling their main living spaces, they would like to have the flexibility to cool additional rooms or areas around their home without running the entire system throughout the whole house.

That’s the beauty of ductless mini-splits. They allow you to heat or cool separate zones throughout your home, even if you already have a central heating and cooling system.

How Do Ductless Mini-Splits Work?

Ductless mini-splits are beautiful in their simplicity. They are made up of an outdoor compressor/condenser unit that goes outside, and then small indoor air-handling units that require nothing but electricity and the ability to hang on the wall. The outdoor and indoor units are connected through a conduit that holds the power cable, refrigerant tubing, suction tubing, and a condensate drain.

Many models of mini-splits can work with up to four indoor units, depending on how many areas around your home you would like to heat and cool. Each area, or zone, has its own thermostat, so you have total control over each area.

Benefits of Ductless mini-splits

Ductless mini-splits are a go-to for many homeowners for a lot of great reasons, and here’s why.

Small Size

The svelte profile of mini ductless systems makes them a desirable alternative to clunky window AC units. They are usually around 7 inches deep and are covered in a simple, yet sleek housing.


We’re a culture of wanting what we want when we want it. A ductless mini-split system gives you the flexibility of cooling down 1-4 rooms or areas of your home without affecting the rest of the house. Think: workout room, man cave, she shed. Or even your master bedroom on those sweltering hot nights when you want to get a good night’s sleep.

Cost Savings

The overall cost savings is one of the main reasons why homeowners are installing ductless mini-split systems. It seems our utility bills only go up and up each year, and any inefficient systems throughout our homes only make matters worse. Ductless mini-splits are smaller than the traditional AC systems and, because they allow you to cool only the areas that you want, you don’t have to pay to cool all the other spaces in your home that don’t necessarily need it.

On top of that, there may be federal, state, and local programs that offer tax credits or utility rebates for installing a ductless system. Contact us to learn more.

Improve Air Quality

When you add a mini-split system to a room that was otherwise not adequately covered by your existing HVAC system, you are improving the air quality by filtering out dust, bacteria, pollen, allergens, and other particles that can make breathing difficult.

Easy to Install

Compared to other heating and cooling systems, ductless mini-splits are quite easy to install. The connection between the indoor and outdoor units needs only a 3-inch hole through the wall for the conduit. You can even locate the outdoor unit as far as 50 feet away from the indoor unit, so you can place them in inconspicuous locations.

Energy Efficient

Central AC systems suffer energy losses due to the extensive ductwork involved. In fact, these losses can account for as much as 30% of your energy consumption, especially when these ducts are running through spaces that aren’t conditioned, like your attic. Mini-splits have no ducts, so no need to worry about duct losses.

Find out More About Ductless Mini-Splits

The benefits of installing a mini ductless system abound, ranging from aesthetics, money savings, convenience, safety, and more. If adding separately controlled zones to your home or work area sounds like the perfect solution to those too hot or cold rooms that you could never quite get to the right temperature, give us a call at AZ Perfect Comfort. Our professional installation team has worked with ductless mini-split systems in all types of environments and will be happy to assist you in making all of your spaces as cool or warm as you like.