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Mini-Split Installation & Repair in Katy, TX

Mini-split installation and repair in Katy, TX. We cool hot upstairs game rooms, garages and additions in Cinco Ranch, Cross Creek Ranch and beyond.

Mini-splits for Katy homes

Katy has grown fast, and a lot of that growth is two-story homes in master-planned communities. They look great, but many share the same problem: the upstairs game room or media room is always hotter than the rest of the house.

That’s usually not a broken AC. Upstairs rooms sit furthest from the air handler, collect the heat that rises through the house, and often sit right under a hot attic. A ductless mini-split solves it by giving that room its own cooling, on its own thermostat.

Common Katy projects

  • Upstairs game rooms and media rooms that never cool down
  • Garages turned into gyms, workshops or offices
  • Additions and sunrooms that the original system was never sized for
  • Whole-home multi-zone systems for families who want each room at its own temperature

Working within your HOA

Most Katy neighborhoods have HOA guidelines for outdoor equipment. We plan the outdoor unit’s placement and the line set route so the install looks clean and fits those guidelines, often on the side or back of the house.

Close to home

Katy is part of our Houston home base, so our technicians are nearby for installs, repairs and seasonal tune-ups.

What a typical install looks like in Katy

For an upstairs game room, we start by measuring the room and checking how much heat it picks up from the attic and the afternoon sun. Then we plan where the outdoor unit can go, usually on the side or back of the house, and how the line set will reach the second floor neatly.

On install day, we mount the indoor unit high on an exterior wall, run the line set down the outside of the house in a paintable cover, set the outdoor unit, and connect the power. Most single-zone installs take about a day. We test everything and show you how to set the room’s own schedule.

In new-construction neighborhoods, dust from nearby building sites can clog filters quickly, so we’ll show you how to rinse them. A yearly tune-up keeps the coils and drain line clean.

How much does a mini-split cost in Katy?

Most single-room mini-split installs in Katy run $1,900–$6,200, installed.
The biggest factor is the size of the room.

Room size Typical installed price
Up to 200 sq ft $1,900–$3,800
200–400 sq ft $2,000–$4,000
400–600 sq ft $2,300–$4,400
600–800 sq ft $2,600–$4,900
800–1,000 sq ft $3,200–$6,200
1,000+ sq ft $3,200–$6,200

Ranges include the unit and a standard single-zone install, assuming 8-ft ceilings, average insulation and sun, and an existing electrical circuit. Add $300–$1,200 if a new circuit is needed.
These are estimates, not quotes; final pricing depends on your space and equipment.

What services are you looking for?

Projects are stressful. Renovations rarely go to plan, and juggling contractors, budgets and timelines can feel like a full-time job you never applied for.

Let Windsanity take the mini-split off your list. Mini-splits are all we do, so you get careful, high-quality work that fits around your schedule and gets finished on time.

Find your project listed below.

Windsanity Services Click a row to open it
Service What's included Best for Next step
Installation Load-calculated sizing, mounting, line set, electrical hookup, startup and walkthrough Garages, additions, rooms with no ductwork Get an estimate →
Repair & Maintenance Diagnostics, refrigerant checks, coil and filter cleaning, error-code troubleshooting Units that are noisy, leaking, or not cooling Book a repair →
Multi-Zone Systems One outdoor unit running two to five indoor heads, each with its own thermostat Whole homes and homes with hot and cold rooms Plan your zones →
ADU & Guest House Right-sized systems for small, well-insulated spaces, with permit-friendly placement ADUs, casitas, backyard offices Get an estimate →
RV & Tiny Home Compact units for tight spaces and limited power RVs, tiny homes, cabins Get an estimate →
Commercial Multi-unit installs and service for offices, warehouses and retail Shops, small offices, server and storage rooms Request a quote →
Have a different project in mind? Send us a message

Frequently Asked Questions

Answers to the questions we hear most.
Don't see yours? Reach out and we'll get back to you.

Can a mini-split fix a hot upstairs game room?

Yes, and it's one of the most common jobs we do in Katy. A mini-split gives that room its own cooling and its own thermostat, so you don't have to freeze the downstairs to make the upstairs comfortable.

Will my HOA allow an outdoor unit?

Most Katy HOAs have rules about where outdoor equipment can go and how visible it is. We'll help you pick a spot for the outdoor unit that fits your HOA's guidelines. Check with your HOA if approval is required before installation.

Can you put a mini-split in my garage?

Yes. Garage gyms, workshops and home offices are a great fit, since a mini-split cools the garage without tying it into the house's system.

Ready to get comfortable in Katy?

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