LARGE SPACE COOLING SOLUTIONS

24K–36K BTU Mini Split Systems for Large Rooms, Garages & Open Floor Plans

Find high-capacity 24K–36K BTU mini split systems built for large spaces, garages, and open floor plans. Designed to handle areas over 1,000 sq ft, these systems provide powerful, efficient heating and cooling. Compare MRCOOL DIY and professionally installed options to match your space and installation needs.

24K to 36K BTU mini split system installed in a large open space for high capacity heating and cooling 24K to 36K BTU mini split system installed in a large open space for high capacity heating and cooling
9 Products
Sale R-454B
MRCOOL DIY® 36K BTU 5th Gen Single-Zone Mini Split Heat Pump

MRCOOL DIY® 36K BTU 5th Gen Single-Zone Mini Split Heat Pump

5th Gen 36,000 BTU 1 Zone 208/230V
In stock
Free shipping*
$3,790.00 $4,737.50
View System
Sale R-454B
MRCOOL DIY® 24K BTU 5th Gen Single-Zone Mini Split Heat Pump

MRCOOL DIY® 24K BTU 5th Gen Single-Zone Mini Split Heat Pump

5th Gen 24,000 BTU 1 Zone 208/230V
In stock
Free shipping*
$3,335.00 $4,168.75
View System
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Sale R-454B

MRCOOL Advantage 5th Gen 24,000 BTU 18.7 SEER2 Ductless Mini Split Air...

5th Gen 36,000 BTU 1 Zone 208/230V
In stock
Free shipping*
$1,615.00 $2,018.75
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Sale R-454B

MRCOOL Advantage 5th Gen 36,000 BTU 18 SEER2 Ductless Mini Split Air...

5th Gen 24,000 BTU 1 Zone 208/230V
Out of stock
Free shipping*
$2,322.00 $2,902.50
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Sale R-454B

MRCOOL Olympus E Star 9,000 BTU Single Zone Mini Split Complete System,...

5th Gen 9,000 BTU 1 Zone 208/230V
In stock
Free shipping*
$1,447.00 $1,808.75
View System
DIY R-454B

MRCOOL DIY® Select 24,000 BTU Single Zone Mini Split Heat Pump 230V...

5th Gen 24,000 BTU 1 Zone 208/230V
⏳ Backordered Available Soon
Free shipping*
$2,149.00
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Sale R-454B

MRCOOL Olympus E Star 24,000 BTU Single Zone Mini Split Complete System,...

5th Gen 24,000 BTU 1 Zone 208/230V
In stock
Free shipping*
$2,325.00 $2,906.25
View System
DIY R-454B

MRCOOL DIY® Select 9,000 BTU Single Zone Mini Split Heat Pump 115V...

5th Gen 9,000 BTU 1 Zone 115V
⏳ Backordered Available Soon
Free shipping*
$1,569.00
View System

LARGE SPACE MINI SPLIT BUYING GUIDE

How to Choose the Right Mini Split for Large Spaces

Learn how to choose the right 24K–36K BTU mini split system for large rooms, garages, workshops, and open floor plans. Compare system sizes, understand installation options, and find the best setup for powerful, efficient heating and cooling.

24K–36K BTU Mini Split Buying Guide

Choosing the right 24K–36K BTU mini split system is essential for larger spaces where consistent heating and cooling performance matters. These high-capacity systems are ideal for open floor plans, large living areas, garages, workshops, and spaces over 1,000 square feet.

A 24K BTU system is typically suited for moderately large spaces or well-insulated areas, while 30K and 36K BTU systems provide additional capacity for larger layouts, higher ceilings, or environments with greater heat load. Modern inverter-driven mini splits automatically adjust output based on demand, delivering powerful performance without sacrificing efficiency or comfort.

MRCOOL mini split systems are available in both DIY and professionally installed configurations. DIY models include pre-charged line sets for simplified installation, while traditional systems offer greater flexibility for custom layouts and longer line runs. Choosing the correct system size ensures reliable performance, better energy efficiency, and long-term durability in demanding applications.

Frequently Asked Questions

What size space is a 24K–36K mini split good for?

24K–36K BTU mini split systems are typically designed for spaces over 1,000 square feet, depending on insulation, ceiling height, and layout. Larger or more open areas may require higher capacity within this range.

Is a 24K or 36K mini split better for an open floor plan?

Open floor plans often benefit from higher-capacity systems like 30K or 36K BTU units, especially when ceilings are high or multiple areas are connected. Proper sizing depends on total square footage and layout.

Can a mini split handle a large garage or workshop?

Yes, 24K–36K BTU mini splits are commonly used in garages and workshops. These systems provide strong cooling and heating performance, even in spaces with higher heat load or less insulation.

Do larger mini splits use more energy?

Larger systems have higher capacity, but inverter technology allows them to adjust output based on demand. This means they can operate efficiently without constantly running at full power.

Is it okay to oversize a mini split for a large space?

Modern inverter mini splits can handle slight oversizing better than traditional systems by adjusting output instead of short cycling. However, proper sizing still ensures the best balance of comfort and efficiency.

Are DIY mini splits available in larger BTU sizes?

Yes, MRCOOL offers DIY mini split systems in higher BTU ranges, including 24K and above. These systems include pre-charged line sets for simplified installation.

Can I use one large mini split for multiple rooms?

A single large mini split can condition an open area, but separate rooms or divided spaces may require a multi-zone system for balanced airflow and comfort.

What should I consider when sizing a large mini split system?

Important factors include total square footage, ceiling height, insulation quality, number of windows, and whether the space is open or divided. These elements affect the overall heating and cooling demand.