0% Financing for 12 Months* or up to 48 Months* Terms Available - Buy Now and Pay later!

MRCOOL 9,000 BTU DIY Select Series 17.5 SEER2 Single Zone Black Wall Mounted Mini Split Heat Pump System with 11.5 ft. Line Set – R454B | 115V

SAVE $109.91

Required Fields *

Out of stock
Free Shipping
By

MRCOOL

Out of stock

Model

DIYS-09-HP-B-115A11-O

ID

236287

Was $1,000.00
Your Low Price $890.09
 
Customize MRCOOL 9,000 BTU DIY Select Series 17.5 SEER2 Single Zone Black Wall Mounted Mini Split Heat Pump System with 11.5 ft. Line Set – R454B | 115V
9,000 BTU MRCOOL Single Zone Condenser - R454B
9,000 BTU MRCOOL Single Zone Condenser - R454B   + $890.09
16ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B
17" Wall Mount Bracket for Mini Split Systems
Cielo Breez Max Mini Split Thermostat with WiFi

Energy-efficient ductless system that delivers simple installation, lower operating costs, and reliable climate control for smaller spaces.

Bring simple, affordable comfort to your space with the MRCOOL DIY Select Series Mini Split with an 11.5 ft. Line Set. Designed for small spaces up to approximately 400 sq. ft. This high-efficiency ductless system makes it easier than ever to upgrade your home comfort without the costs and obstacles of traditional HVAC installation.

Perfect for bedrooms, home offices, bonus rooms, apartments, and other compact living spaces. This series combines energy-saving inverter technology with DIY-friendly installation so you can enjoy reliable heating and cooling year-round while keeping installation simple and operating costs low.

Why Customers Choose the Select Series

  • DIY Installation Made Simple — Quick Connect technology helps streamline installation without specialized HVAC tools, reducing time and installation costs.
  • Year-Round Heating & Cooling — 9,000 BTU performance delivers dependable comfort in spaces up to 400 sq. ft., keeping rooms comfortable through changing seasons.
  • Energy-Saving Performance — The 17.5 SEER2 inverter system adjusts output automatically to maintain comfort while helping reduce energy intake.
  • Quiet, Everyday Comfort — Low-noise operation makes this system ideal for sleeping, working, relaxing, and everyday living.

Includes Quick Connect Pre-Charged Line Sets

Arrives ready to connect, eliminating the need for vacuuming, refrigerant charging, or specialized HVAC equipment. This simplifies installation, saves time, and makes DIY installation more accessible for homeowners.

Control Your Comfort from Anywhere

Built-in Wi-Fi lets you control your mini split from virtually anywhere using the SmartHVAC app on your compatible smartphone or tablet. Adjust the temperature, switch operating modes, create schedules, and manage your comfort whether you're at home or away.

Reliable Heating During Cooler Weather

Designed for year-round comfort, this heat pump provides dependable heating during cooler weather and is capable of operating in heating mode at outdoor temperatures as low as -13°F. Advanced inverter technology automatically adjusts performance to help maintain a comfortable indoor environment.

What’s Included

  • MRCOOL DIY Select 9,000 BTU Ductless Mini Split Outdoor Condenser (DIYS-09-HP-C-115A11-O)
  • MRCOOL DIY Select 9,000 BTU Ductless Mini Split Indoor Air Handler (DIYS-09-HP-B-WMAH-115A13-O)
  • 11.5 ft. Pre-Charged Quick Connect Line Set
  • 13-Foot Communication Cable
  • Drain Hose
  • Air Filter
  • Wireless remote control
  • Owner's Manual, Guides, and Other Documents

Recommended Accessories

  • 17" Wall Mount Bracket for Mini Split Systems
  • Wall Mounted Thermostat
  • Installation kit
  • • 3/4" x 6' Electrical Whip – SKU: 84138 • 60A Non-Fused Disconnect – SKU: 83335 • Surge Protector – SKU: ICM517 • CPS Charging Adapter – SKU: 87-AD87 • Telescoping Wall Sleeve – SKU: NFP-75
  • Additional line set options with a coupler
  • • Coupler- NVCOUPLER-3834 • 16ft- DIY16-1438-O • 25 ft-DIY25-1438-O • 35 ft-DIY35-1438C-O • 50 ft- DIY50-1438C-O

Warranty

MRCOOL offers a limited warranty of 10-Year Compressor / 7-Year Parts Warranty* when installed according to manufacturer guidelines.


See Why the MRCOOL DIY Select Series Is a Top DIY Mini Split

See why the MRCOOL DIY Select Series has become one of the most popular budget-friendly mini split systems on the market. In this video, you'll learn how the DIY Select combines energy-efficient inverter technology, pre-charged Quick Connect line sets, and simple homeowner-friendly installation to deliver reliable heating and cooling without the cost of traditional HVAC installation. Discover the key features, benefits, and smart comfort controls that make the MRCOOL Select Series an excellent solution for bedrooms, garages, workshops, additions, and other single-room applications.

9,000 BTU MRCOOL Single Zone Condenser - R454B

Create Year-Round Comfort With an Easy-To-Install Outdoor Condenser Unit

Upgrade your comfort with the MRCOOL DIY 9,000 BTU Select Single Zone Mini Split Heat Pump Condenser —the outdoor unit is designed to deliver efficient, year-round heating and cooling for spaces up to 400 square feet. Built for homeowners who want flexibility, performance, and easier installation, this condenser combines dependable comfort with DIY convenience. Pairs effortlessly with compatible MRCOOL DIY Select indoor air handler(DIYS-09-HP-WMAH-115A13-O)

Key Features

  • Designed for DIY Installation — Compatible with Quick Connect technology, this condenser includes one 11.5 ft. pre-charged line set to help simplify setup and reduce installation barriers.
  • Efficient Year-Round Comfort — Delivers dependable heating and cooling performance for bedrooms, offices, apartments, and other smaller spaces.
  • Quiet Outdoor Performance — Made for reliable comfort with low-noise operation that helps maintain a more enjoyable home environment.

Warranty

MRCOOL offers a limited warranty of 2-Year Compressor / 1-Year Parts Warranty* when installed according to manufacturer guidelines.

16ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B

DIY16-1438-O 16ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor - R454B

The MRCOOL DIY16-1438-O is a pre-charged 16-foot line set designed specifically for MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. It is engineered to simplify installation for homeowners and HVAC professionals alike, while maintaining efficiency and refrigerant integrity without the need for vacuuming or charging.

This lineset offers a flexible, durable, and easy-to-connect solution that supports the revolutionary MRCOOL DIY ductless mini-split systems. The Quick Connect® fittings provide a secure and tight seal, ensuring a hassle-free installation and long-term reliability.

Key Features:

  • Length: 16 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
  • Refrigerant: Pre-charged with environmentally friendly R-454B
  • Compatibility: Designed for use with MRCOOL DIY 6K, 9K, and 12K indoor units
  • Connection Type: Quick Connect fittings for fast, tool-free installation
  • Insulation: High-quality insulation for efficient thermal performance and reduced energy loss
  • Corrosion Resistance: Durable construction resists environmental wear and corrosion

This lineset is ideal for both first-time installations and replacements, ensuring optimal performance and easy integration with compatible MRCOOL® systems. With a 100% DIY approach, this component allows users to complete professional-level installations without special tools or equipment.

17" Wall Mount Bracket for Mini Split Systems

This wall mount bracket is perfect for outdoor mini split condensers. The length of the the wall bracket arms are 17” long. The condensing unit is mounted onto the L-shaped brackets and fastened using the bolts and anti-vibration washers provided.

Features:
  • 17” Arm Length
  • Weight capacity of 220 lbs per arm
  • Bolts and anti-vibration washers included

No Return Policy

All sales of this product are final and are non-refundable.

Cielo Breez Max Mini Split Thermostat with WiFi

Introducing Cielo Breez Max, the ultimate smart thermostat for your mini-splits, designed to elevate your comfort with intelligent climate control. Transform your air conditioner into a smart powerhouse and manage your cooling or heating from anywhere using your phone. This award-winning device, available in black and white, prevents overheating or overcooling with AI-powered Comfy Max, while seamlessly detecting any mini-split brand for hassle-free setup.


Features:

  • Energy Savings
  • WiFi Connectivity
  • Weekly Schedule
  • Geofencing
  • Temperature Range Lock
  • Real-Time Notifications
  • HVAC Zoning

Weekly Schedule lets you set on and off periods throughout the week based on your needs.

Geofencing uses your smartphone's location to trigger actions in your system, such as turning the air conditioner on or off based on your proximity to home.

Temperature Range Lock ensures your air conditioner operates within a set temperature range for optimal comfort and efficiency.

Real-Time Notifications keep you informed with important updates, helping you manage your air conditioner better.

HVAC Zoning allows you to create customized temperature control zones by grouping multiple mini-split units.

The Cielo Breez Max offers innovative features and extraordinary performance, making it a perfect fit for any room air conditioner. Enjoy maximum energy savings and simplified home comfort with this advanced smart thermostat.

25ft 1/4 x 1/2 Line Set for DIY 18K Indoor - R454B

DIY25-1412-O 25ft 1/4 x 1/2 Lineset for DIY 18K Indoor - R454B

The MRCOOL® DIY25-1412-O is a 25-foot pre-charged lineset designed for MRCOOL DIY 18K indoor units using R-454B refrigerant. This lineset offers a convenient and reliable solution that eliminates the need for vacuum pumps or refrigerant charging during installation.

Featuring Quick Connect fittings, it enables quick, tool-free connections between indoor and outdoor units. The durable insulation and corrosion-resistant copper tubing ensure optimal thermal efficiency and long-lasting performance.

Key Features:

  • Length: 25 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 1/2 inch suction line
  • Refrigerant: Pre-charged with eco-friendly R-454B refrigerant
  • Compatibility: Compatible with MRCOOL DIY 18K indoor units
  • Connection Type: Quick Connect fittings for easy installation
  • Insulation: High-quality insulation to prevent condensation and improve energy efficiency
  • Durability: Built with corrosion-resistant materials for extended lifespan

This lineset is an excellent choice for extending or replacing refrigerant lines in MRCOOL® DIY mini-split systems, providing hassle-free installation and dependable operation.

Equipment Pad and Risers Kit

E Lite Condenser Pad and Risers

E Lite Condenser Pad

E Lite Condenser Pad is designed to provide solid support for air conditioning condensers. It's made from sturdy polypropylene, striking a balance between lightness and stability. Its robust design ensures a level ground without the need for extra components.

Key Features:

  • Reliable Support: Abundance of ridges for stable ground support.
  • Durable and Lightweight: Tough yet not excessively heavy, thanks to polypropylene construction.
  • Anti-Slip: The surface prevents slipping, and rounded edges enhance safety.
  • Simple Appearance: Gray color with size labels.
  • Versatile Use: Suitable for condensers, pipes, ducts, cables, and more.

E Lite Risers

E Lite Risers complement the Condenser Pad, allowing you to adjust your setup as needed. They are constructed from weather-resistant PVC for outdoor use.

Key Features:

  • Weather Resistance: Made from tough PVC for long-lasting performance.
  • Secure Setup: The track securely holds bolts in place.
  • Bolts Included: Each set comes with two bolts.
  • Strong Support: Capable of handling loads of up to 397 pounds.

E Lite Condenser Pad and Risers offer reliable support without any complications. They are built to last and deliver efficient performance. Consider E Lite for your support needs – it's a practical solution for your projects.

No Return Policy

All sales of this product are final and are non-refundable.

35ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B

DIY35-1438C-O 35ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor with DIY Pro Cable - R454B

The MRCOOL® DIY35-1438C-O is a 35-foot pre-charged lineset with an integrated DIY Pro Cable, engineered for compatibility with MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. This advanced installation component simplifies setup while delivering excellent durability, refrigerant integrity, and safety.

Equipped with patented Quick Connect fittings, this lineset allows for a hassle-free, tool-free connection between indoor and outdoor units. The added DIY Pro Cable enhances reliability and safety during installation, offering pre-attached wiring in a single bundled solution. It's the ideal choice for extended installations requiring both performance and convenience.

Key Features:

  • Length: 35 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
  • Refrigerant: Pre-charged with R-454B refrigerant for environmentally responsible performance
  • Compatibility: Designed for MRCOOL DIY 6K, 9K, and 12K indoor units
  • Connection Type: Quick Connect fittings for easy and secure installation
  • Pro Cable: Integrated DIY Pro Cable for simplified wiring and increased safety
  • Insulation: High-quality insulation ensures efficiency and protection from condensation
  • Durability: Built with corrosion-resistant materials for long-term use

The DIY35-1438C-O is the perfect solution for users seeking an extended lineset with built-in power and communication cabling. Its all-in-one design streamlines setup and supports reliable performance in MRCOOL® DIY mini-split systems.

50ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B   

DIY50-1438C-O 50ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor with DIY Pro Cable - R454B

The MRCOOL® DIY50-1438C-O is a 50-foot pre-charged lineset with an integrated DIY Pro Cable, designed for use with MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. This extended-length lineset offers a convenient, all-in-one solution for efficient and reliable HVAC installations.

Featuring patented Quick Connect fittings, this lineset enables a quick and secure connection between indoor and outdoor units without specialized tools. The integrated DIY Pro Cable streamlines wiring and enhances installation safety, making it ideal for professional-quality DIY projects.

Key Features:

  • Length: 50 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
  • Refrigerant: Pre-charged with eco-friendly R-454B refrigerant
  • Compatibility: Suitable for MRCOOL DIY 6K, 9K, and 12K indoor units
  • Connection Type: Quick Connect fittings for easy, tool-free installation
  • Pro Cable: Integrated DIY Pro Cable for simplified wiring and enhanced safety
  • Insulation: High-quality insulation to improve energy efficiency and prevent condensation
  • Durability: Constructed with corrosion-resistant materials for lasting performance

This 50-foot lineset with integrated Pro Cable is perfect for installations requiring longer reach and professional-grade convenience. It ensures reliable operation and an efficient setup for MRCOOL® DIY mini-split systems.

More Information
MRCOOL DIY 9,000 BTU Select Single Zone Mini Split Heat Pump Condenser – R454B | 115V
FeatureSpec
SKUDIYS-09-HP-C-115A11-O
Refrigerant Charge1.08 lbs (Pre-Charged for 11.5ft Line Set)
Weight (in lbs)66.58
AHRI Certificate Number218004484
Brand/ManufacturerMRCOOL
UPC840255595667
Cooling BTU9,000 BTU
Heating BTU9,000 BTU
Decibel Level (dBA)54 dBA
Energy StarYes
RefrigerantR454B
HSPF28.8
SEER2 (Efficiency)17.5
EER29.8
Compressor TypeHigh Efficiency Rotary
Liquid Line1/4"
Suction Line3/8"
Electrical115V | 1 Phase | 60Hz
Max Breaker Size20 Amps
Min. Breaker Size17 Amps
BTU/Tonnage9,000 BTU/0.75 Ton
Min/Max Outdoor Temp for Heating-13°  to 75° F
Min/Max Outdoor Temp for Cooling-13° to 122° F
Zone CompatibilitySingle Zone
Height19.49"
Width28.35"
Depth10.63"
Warranty2-Year Compressor / 1-Year Parts Warranty* when installed according to manufacturer guidelines
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
MRCOOL DIY 9,000 BTU Select Single Zone Black Wall Mounted Mini Split Air Handler – R454B | 115V
FeatureSpec
SKUDIYS-09-HP-B-WMAH-115A13-O
Weight (in lbs)33.95
AHRI Certificate Number218004484
Brand/ManufacturerMRCOOL
UPC840255595636
ControllerIncluded
Cooling BTU9,000 BTU
Heating BTU9,000 BTU
Decibel Level (dBA)18.0 - 43.0 dBA
RefrigerantR454B
Liquid Line1/4"
Suction Line3/8"
Electrical115V | 1 Phase | 60Hz
BTU/Tonnage9,000 BTU/0.75 Ton
Mini Split TypeWall Mounted
Zone CompatibilitySingle Zone
Height11.5"
Width28.7"
Depth7.87"
Warranty1 Year Parts 2 Year Compressor
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
16ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B
FeatureSpec
SKUDIY16-1438-O
Weight (in lbs)7.9
Brand/ManufacturerMRCOOL
UPC605468495094
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 3/8
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
35ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
FeatureSpec
SKUDIY35-1438C-O
Weight (in lbs)17.6
Brand/ManufacturerMRCOOL
UPC605468430279
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 3/8
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
50ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B   
FeatureSpec
SKUDIY50-1438C-O
Weight (in lbs)24
Brand/ManufacturerMRCOOL
UPC605468291115
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 3/8
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
25ft 1/4 x 1/2 Line Set for DIY 18K Indoor - R454B
FeatureSpec
SKUDIY25-1412-O
Weight (in lbs)12.1
Brand/ManufacturerMRCOOL
UPC605468070710
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 1/2
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
17" Wall Mount Bracket for Mini Split Systems
FeatureSpec
SKUHW-600
Weight (in lbs)9.2
Brand/ManufacturerOnline Supply
Length17"
Height20"
Width6"
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
E Lite Equipment Pad and Risers Kit 18" x 38" x 3"
FeatureSpec
SKU87762 / EL1838-3
Weight (in lbs)25
Brand/ManufacturerOnline Supply
UPCna
Height3"
Width18"
Depth38"
Safety InformationPROPOSITION 65 WARNING
Cielo Breez Max Mini Split Thermostat with WiFi
FeatureSpec
SKUBM101WA
Weight (in lbs)1
Brand/ManufacturerCielo
UPCna
ElectricalMicro USB with Standard Plug
Height4.25"
Width4.25"
Depth1"
Warranty1 Year Full Replacement
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Write Your Own Review
You're reviewing:MRCOOL 9,000 BTU DIY Select Series 17.5 SEER2 Single Zone Black Wall Mounted Mini Split Heat Pump System with 11.5 ft. Line Set – R454B | 115V
Your Rating
Customer Questions
No Questions
Did you find what you were looking for?
Why Choose MRCOOL?
Why Choose MRCOOL?

MRCOOL mini split systems combine innovative design with advanced manufacturing to deliver efficient, reliable comfort wherever you need it. Built with cutting-edge technology, these systems ensure optimal performance and flexibility for any space.

blockboard tech