Can I Install AC If My Home Doesn’t Have Existing Ductwork?

Many homeowners assume that installing AC without existing ductwork isn’t possible. In reality, there are several effective no-ductwork cooling options, including ductless mini splits that can provide reliable comfort without the expense and disruption of adding ducts.

Yes, You Can Absolutely Get AC Without Existing Ductwork

Too many Indianapolis-area homeowners are sweating it out all muggy, steamy summer long because they believe the myth that no ductwork means no AC. Will there be some challenges to adding AC in a home with no ducts? Yes, you do need to be ready to think outside the box a bit. However, there are great choices for getting the air in your home or home addition cool, crisp, and perfectly circulated. 

Most homes you’ve either lived in, toured on the market, or visited probably had central air because this is the standard cooling option here in Central Indiana. That’s why you may have thought you were out of luck with AC if your older home or newer home addition doesn’t have ducts. One of the most practical options is a ductless mini split that’s designed specifically for a no-duct scenario. Let’s get into how to install AC with no existing ductwork.

What Are Your Options When There’s No Ductwork?

An Indianapolis homeowner is looking at three core no-ductwork cooling options. The first is to add ductwork and install AC. If you have an older Indiana home, tackling the project means opening up parts of your walls, ceilings, or floors to run ducts. Depending on your home’s design and age, you may need to lower ceilings, eat up some closet space, or start carving into older plaster or woodwork. Most homeowners who want to install cooling without ductwork try their best to avoid this option simply because of the cost and disruption involved. However, it can make sense to add in AC if you’re already taking on a big renovation that requires demolition.

Ductless Mini Split Systems

If you want the feeling of central air without ducts in Indianapolis without a major retrofitting project, there’s the ductless mini split system. This is a top choice among homeowners in older homes without ducts or homeowners who have added additions without extending ductwork.

A ductless mini split system is composed of one outdoor compressor unit connected to one or more indoor wall-mounted air handlers via refrigerant lines. Unlike cooling systems that require demolition or retrofitting, a mini split connection only requires a small hole in a wall in your home. Mini splits are highly efficient, permanent, and great for room-specific, zone-specific, or whole-home cooling.

Portable AC Units

Finally, a window or portable AC unit can end up being the best choice when budget and ease are priorities. Window and portable units can’t recreate the feeling of having central AC the way a mini split can. However, they definitely add cool air and reduce humidity in spaces that don’t have AC. The only concern with window units and portable ACs is that they don’t have enough power to cool beyond a single room. Their performance and energy efficiency also lag compared to permanent AC options. Many homeowners also simply don’t like the visibility of a bulky unit taking up space in a window.

Why Do So Many Indiana Homes Not Have Ductwork?

It’s common for older homes in Central Indiana to not have ductwork unless an owner somewhere along the way decided to do a major renovation that included adding ducts. We see this a lot in older, charming neighborhoods like Meridian-Kessler, Broad Ripple, Irvington, and Fountain Square, where homes were built before central air conditioning became common. At the time they were built, they were heated using radiators, boilers, or baseboard systems that didn’t rely on ducts traveling throughout a home the way modern homes do today.

Something else we see pretty often is a homeowner looking for a cooling solution after building a home addition or converting an attic into a living space. Cooling becomes a challenge in these scenarios because existing ducts don’t reach the new space. Extending them could cost a small fortune and force a homeowner to open up walls and ceilings.

Is a Ductless Mini Split a Good Long-Term Solution, or a Workaround?

When you’re comparing something like a mini split vs window unit, a mini split is much closer to central air or a traditional HVAC system compared to a temporary or seasonal unit that takes up space in your window. Ductless AC is a permanent, custom option that’s hardwired into your home.

If your home doesn’t have ducts, a mini split is a great solution that provides ease with some added benefits that actually go above and beyond central air. For example, the Department of Energy says mini splits are around 30% more efficient than central air because you’re not dealing with the issue of duct losses and leaks. Plus, ductless delivers room-precise temperature control, whisper-quiet operation, and the ability to heat and cool a space with a single system.

Something that starts to excite Indiana homeowners after they look into mini splits seriously for the first time is that models from Carrier, Daikin, and Mitsubishi are Energy Star certified to offer really strong and efficient performance for the long haul.

Can a Ductless System Cool My Whole Home, or Just One Room?

Ductless mini splits are primarily thought of as room-specific or zone-specific cooling systems. They shine when you need to bring cooling to something like an addition or a finished part of your home that was previously unfinished.

With that said, there are some great options for configuring a multi-zone or whole-house system. It just takes some extra planning and attention. To accomplish this, we design a multi-zone system that uses one outdoor unit connected to multiple indoor handlers located in several rooms or an entire house. Creating the most efficient setup requires an HVAC team to look at things like your home’s size and layout.

At HomeSense, this is exactly why we prioritize a cooling survey to help determine the best option for your home. Our technicians always prioritize the setup that’s right for your cooling needs, home layout, and budget instead of pushing a specific option that works for us.

How Do You Figure Out What’s Right for Your Home?

Don’t live with a hot home just because someone told you AC wasn’t possible in your older home. We see happy homeowners with cooling transformations in neighborhoods all over Indianapolis every single week.

Whether you’re looking for a ductless system for an older home in Indiana or you need to cool down a new home addition or renovated space, ductless is worth a look. The best option to install AC with no existing ductwork can depend on your home’s size, layout, and features. Your budget and cooling preferences also matter.

The best way to start is a conversation with a local HVAC professional. At HomeSense, we won’t give you an opinion until we’ve seen your home in person. Following your custom home survey, we’ll let you know about recommendations that fit your needs. Homeowners enjoy our pressure-free, informative method of introducing the best cooling solution. Book a cooling consultation with HomeSense today to start exploring your options.