8 Products
Sale DIY R-454B

MRCOOL DIY Select 9K BTU 115V Mini Split Heat Pump System with...

1st Gen 9,000 BTU 1 Zone 115V
⏳ Backordered Available Soon
Free shipping*
$1,470.00 $1,549.00
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Sale DIY R-454B

MRCOOL DIY Select 12K BTU 115V Mini Split Heat Pump System with...

1st Gen 12,000 BTU 1 Zone 115V
⏳ Backordered Available Soon
Free shipping*
$1,590.00 $1,699.00
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DIY R-454B
MRCOOL DIY® Select 18K BTU Single Zone Mini Split Heat Pump 230V

MRCOOL DIY® Select 18K BTU Single Zone Mini Split Heat Pump 230V

1st Gen 18,000 BTU 1 Zone 208/230V
In stock
Free shipping*
$1,690.00
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Sale DIY R-454B

MRCOOL DIY Select 18K BTU 230V Mini Split Heat Pump System with...

1st Gen 18,000 BTU 1 Zone 208/230V
⏳ Backordered Available Soon
Free shipping*
$1,892.00 $1,990.00
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DIY R-454B
MRCOOL DIY® Select 24K BTU Single Zone Mini Split Heat Pump 230V

MRCOOL DIY® Select 24K BTU Single Zone Mini Split Heat Pump 230V

1st Gen 24,000 BTU 1 Zone 208/230V
In stock
Free shipping*
$1,899.00
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Sale DIY R-454B

MRCOOL DIY Select 24K BTU 230V Mini Split Heat Pump System with...

1st Gen 24,000 BTU 1 Zone 208/230V
⏳ Backordered Available Soon
Free shipping*
$2,013.00 $2,199.00
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MRCOOL DIY SELECT SERIES SINGLE ZONE MINI SPLITS

Affordable DIY Mini Split Heating & Cooling with MRCOOL

MRCOOL DIY® Select single zone mini split systems are designed for homeowners who want reliable heating and cooling without the higher price of premium cold-climate systems. Each system includes an easy-to-install, pre-charged Quick Connect® line set, making it a budget-friendly option for bedrooms, garages, workshops, offices, additions, and other single-room spaces.

MRCOOL DIY® Select is the value-focused DIY mini split system built for simple installation, everyday comfort, and budget-conscious heating and cooling.

MRCOOL DIY single zone mini splits are a popular alternative to window units and central HVAC systems for homeowners who want efficient, room-by-room climate control without complicated installation.

MRCOOL DIY® Select Mini Split Systems for Affordable Room-by-Room Comfort

Best Uses for MRCOOL DIY® Select Mini Split Systems:

• Bedrooms and master suites
• Garages and workshops
• Home offices and studios
• Room additions and finished basements
• Small homes and apartments
• Spaces without existing ductwork


MRCOOL DIY® Select single zone mini split systems are designed for homeowners who want simple installation, dependable comfort, and a more budget-friendly heating and cooling solution.

Each system includes a pre-charged Quick Connect® line set that helps simplify installation without requiring special HVAC tools or complicated setup procedures.

The DIY® Select Series delivers excellent cooling performance along with dependable standard heat pump heating, making it a great option for everyday residential comfort in a wide range of climates.

Whether you are upgrading a garage, bedroom, office, workshop, or addition, MRCOOL DIY® Select systems provide an affordable way to enjoy efficient ductless heating and cooling with the convenience of DIY installation.

MRCOOL DIY® Select Questions & Answers

What makes the MRCOOL DIY® Select Series different from other MRCOOL systems?

The MRCOOL DIY® Select Series is designed as a more budget-friendly DIY ductless mini split option while still offering reliable heating and cooling performance, inverter technology, and simple installation using Quick Connect® line sets.

It is ideal for customers who want dependable comfort and DIY convenience at a lower overall system cost.

Is the MRCOOL DIY® Select good for garages and workshops?

Yes. The DIY® Select Series is a popular option for garages, workshops, hobby spaces, home gyms, offices, and other areas where traditional ductwork may not exist.

The ductless design allows targeted heating and cooling for individual spaces without requiring major remodeling.

Does the DIY® Select system use inverter technology?

Yes. MRCOOL DIY® Select systems use inverter-driven compressor technology to help improve efficiency, maintain more consistent indoor temperatures, and reduce unnecessary energy consumption compared to traditional fixed-speed systems.

Can the MRCOOL DIY® Select replace window air conditioners?

In many applications, yes. A ductless mini split system can provide quieter operation, improved efficiency, better temperature control, and both heating and cooling from a single system.

Many homeowners upgrade from window units to mini split systems for improved comfort and appearance.

Because eventually most people tire of listening to a screaming metal box vibrate inside a window frame like an angry shopping cart.

What type of refrigerant does the MRCOOL DIY® Select use?

The MRCOOL DIY® Select Series uses R-454B refrigerant, a newer lower global warming potential refrigerant designed to meet updated industry standards.

Is the MRCOOL DIY® Select system quiet?

Yes. Ductless inverter systems are designed to operate much quieter than many traditional window air conditioners or portable AC units.

Indoor air handlers provide smooth and efficient airflow with reduced operating noise for improved everyday comfort.

Does the DIY® Select Series work well for additions and finished spaces?

Yes. MRCOOL DIY® Select systems are commonly used for:

  • Room additions
  • Finished basements
  • Converted garages
  • Sunrooms
  • Offices
  • Bedrooms
  • Small apartments

The ductless design makes them especially useful in spaces where extending existing ductwork may be difficult or expensive.

Why do homeowners choose ductless mini split systems?

Ductless mini split systems offer flexible room-by-room comfort, energy-efficient heating and cooling, quieter operation, and easier installation compared to many traditional HVAC systems.

DIY-friendly systems like the MRCOOL DIY® Select Series also help reduce installation complexity for homeowners looking for a simpler heating and cooling solution.