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Ductless Mini-Split Installation and Repair in Austin, TX

Need heating and cooling for a room your ducts can't reach, or a home with no ducts at all? We install, repair and maintain ductless mini-split systems, with a firm price before any work starts.

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Ductless mini-splits for Austin homes

A ductless mini-split is a heat pump that heats and cools a space without any ductwork. An outdoor unit connects to one or more indoor units through a small bundle of refrigerant line, wiring and condensate drain that passes through a small hole in the wall. Each indoor unit has its own controls, so every room or zone can be set to exactly the temperature you want.

In Austin, that makes mini-splits a good answer to problems that ducted systems struggle with: a converted garage, an addition, a bonus room over the garage, or a room at the end of a long attic duct run that never feels right. If you're not sure why one room is always hotter or colder than the rest, our article on why some rooms are hotter or colder than others is a good place to start.

Kassa Kool is engineer-owned. We size mini-split systems with a Manual J load calculation instead of guessing, because a system that's too big or too small never keeps a room comfortable. We install, repair and maintain single-zone and multi-zone ductless systems.

Where a mini-split makes sense

  • Home additions, converted garages and sunrooms where extending ductwork isn't practical
  • Bonus rooms and upstairs rooms that never match the rest of the house
  • Older homes with no existing ductwork
  • Home offices, workshops and studios that need their own temperature
  • Rooms that a ducted system can't keep up with, even after the ducts have been checked

Is a mini-split right for your whole house?

Sometimes, but not always. One mini-split usually serves a room or an open area. For a whole home, a multi-zone system or a ducted heat pump may be the better fit. We'll compare the options honestly, including when a mini-split isn't the best choice.

Benefits of a ductless mini-split

Comfort room by room

Each indoor unit is controlled separately, so you can heat or cool only the rooms you're using and set each one to its own temperature.

No duct losses

Austin attics regularly pass 130°F, and ducts that run through them can leak or lose a lot of the air you've paid to cool. A ductless system delivers air straight into the room.

Steady temperatures and better humidity control

Inverter-driven mini-splits adjust their speed instead of switching fully on and off. They tend to hold temperature more evenly and run longer at lower speeds, which also helps pull moisture out of the air.

Heating and cooling in one system

Because a mini-split is a heat pump, it heats as well as cools. That makes it a good fit for Central Texas winters, and a useful way to add heat to a room without running new gas lines or ducts.

Flexible, low-profile installation

Indoor units come in wall-mounted, ceiling and floor-mounted styles, and installation takes only a small opening in the wall rather than a full duct system.

Thinking about a mini-split? We'll tell you what fits your home.

What our customers say

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Bryan Miller profile picture
Bryan Miller
8 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
Bogdan had our A/C up and running again within hours. He was super fast, very knowledgeable and did a perfect job. Highly recommend!
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Chris Beihl profile picture
Chris Beihl
8 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
Bogdan lives in my neighborhood so when I noticed that my AC wasn't cooling as well as it used to I gave him a call. He was able to come out and diagnose my issue as a leaking evaporator coil within a day and he recharged to keep it going. Also he followed up on my Trane warranty to get the coil replaced which was done the following week. The part was covered under warranty but I did have to cover the cost for the refrigerant and labor. Overall I'm happy with the service and I'll go with Kassa Kool again if I have any issues in the future !
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Brad Closson profile picture
Brad Closson
9 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
Super fast! Did an emergency fix on my company A/C. Very pleased.
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Gabriel Carrillo profile picture
Gabriel Carrillo
9 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
Bogdan is very sharp and a great communicator. It was a pleasure working with him!
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Wendy Funk profile picture
Wendy Funk
12 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
Bogdan is professional, punctual, thorough and honest. I highly recommend his services!!!
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Andy Manchala profile picture
Andy Manchala
13 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
It’s great working with Bogdan and you can trust his insights and judgment on the HVAC systems.
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glenn Nossov profile picture
glenn Nossov
13 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
I'm so happy I found an AC company with personal service, fair pricing, quick response, really good service .I left a response on the website in the evening and he was out the next day .👍
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Jim Tolles profile picture
Jim Tolles
15 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
Bogdan was very friendly, very knowledgeable, diagnosed the bad condenser immediately, replaced it the next day. All good now!
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Maralee Schmidt profile picture
Maralee Schmidt
16 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
CAme same day we needed help. Definitely solved some of the issues we were having.
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Dean Schulz profile picture
Dean Schulz
16 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5
Had a noise issue with my newly installed AC (by a different company) which they were not able to fix or even to diagnose and insisted that’s how it’s supposed to sound. There is no way I could live with that , so I reached out to Kassa Kool who was quick to respond and fix the problem. Owner is very knowledgeable and was able to address the problem on my Trane unit in the same visit. Reasonably priced, I will become their maintenance customer from now on.
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What to expect from a mini-split installation

  1. Call or book online. Tell us which rooms you want to heat and cool.
  2. We assess your space. We look at room size, sun exposure, insulation, electrical capacity and where the indoor and outdoor units could go.
  3. You get options and a firm price. We explain the equipment choices and how many indoor units make sense, and you approve the price before any work begins.
  4. We install. We mount the indoor and outdoor units, run the refrigerant lines and condensate drain, connect power and set up the controls.
  5. We test and walk you through it. We run the system in heating and cooling and show you how to use the remote, app or thermostat.

Mini-split repair and maintenance

We repair ductless mini-splits from major brands, including Mitsubishi. Common problems we see:

  • Water leaking from the indoor unit, often from a clogged condensate drain
  • Not cooling or not heating
  • Ice on the indoor unit or the outdoor coil
  • Blinking lights, error codes or a unit that won't respond to the remote
  • Musty smells from the indoor unit
  • Noisy fans or a loud outdoor unit

Mini-splits need regular care to stay efficient: the filters need cleaning often, and the coil, blower and drain line should be checked at least once a year. Our maintenance plan covers a spring cooling tune-up and a fall heating tune-up for $16.67 a month, and mini-split plans are available too. For repair details, see our heat pump and mini-split repair page.

Financing and rebates

A new system doesn't have to come out of savings. We offer monthly financing on new systems and larger repairs, and qualifying high-efficiency heat pump systems may be eligible for utility rebates. Ask us about your options, or see our financing and rebates page.

Mini-split FAQ

How much does a mini-split cost in Austin?

It depends on the number of indoor units, the capacity you need, the equipment you choose and the complexity of the installation, such as line set length and electrical work. We give you a firm price before any work begins, and financing is available.

Can a mini-split heat my room in winter?

Yes. A mini-split is a heat pump, so it heats as well as cools, and modern units heat well through typical Central Texas winters. We'll size the system for your room and tell you if backup heat makes sense.

How many indoor units do I need?

Usually one indoor unit per room or open area. A multi-zone outdoor unit can serve several indoor units. A load calculation tells us what each space needs, so you don't pay for more than you need.

How often does a mini-split need maintenance?

Clean the filters regularly, often every month or two when the system is working hard, and have the coils, blower and drain line checked once a year, ideally before cooling season.

Do you repair mini-splits you didn't install?

Yes. We repair ductless mini-splits from major brands, whoever installed them.

Ready for a mini-split? Let's talk.

Mon–Fri 8 AM–5 PM. After-hours appointments available.