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MRCOOL DIY Select 18,000 BTU 17.3 SEER2 Single Zone White Wall Mounted Mini Split Heat Pump System with 11.5 ft. Line Set – R454B | 230V

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MRCOOL

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Model

DIYS-18-HP-230A11-O

ID

236290

Was $1,850.00
Your Low Price $1,690.00
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5 out of 5
 
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Product Features
  • True DIY Installation with Quick Connect Line Set
  • 18,000 BTU Comfort For Up To 1,000 Sq Ft
  • Efficient Comfort With 17.3 SEER2 Performance
  • WiFi Enabled with Smart App Control
  • Includes 11.5 Ft Pre-Charged Line Set
  • Quiet Indoor Comfort
Customize MRCOOL DIY Select 18,000 BTU 17.3 SEER2 Single Zone White Wall Mounted Mini Split Heat Pump System with 11.5 ft. Line Set – R454B | 230V
18,000 BTU MRCOOL Single Zone Condenser - R454B
18,000 BTU MRCOOL Single Zone Condenser - R454B   + $1,207.14
18,000 BTU MRCOOL Wall Mounted Air Handler - R454B
18,000 BTU MRCOOL Wall Mounted Air Handler - R454B   + $482.86
16ft 1/4 x 1/2 Line Set for DIY 18K Indoor - R454B
Installation Kit for Condensers
21" Wall Mount Bracket
Cielo Breez Max Mini Split Thermostat with WiFi
MRCOOL 18,000 BTU DIY Select Series 17.3 SEER2 Single Zone White Wall Mounted Mini Split Heat Pump System with 11.5 ft. Line Set – R454B | 230V

$1,690.00

Energy-Efficient Ductless Mini Split for Easy Installation and Year-Round Comfort

Enhance your home's comfort with the MRCOOL DIY Select Series Mini Split with an 11.5 ft. Quick Connect Line Set. Designed to heat and cool spaces up to 1,000 sq. ft., this 18,000 BTU ductless system provides dependable performance while offering a simpler installation process than traditional HVAC systems.

Perfect for living rooms, primary bedrooms, home offices, finished basements, apartments, and other larger living areas, the Select Series pairs advanced inverter technology with DIY-friendly installation to deliver efficient, consistent comfort throughout the year.

Why Choose the Select Series

  • Simple DIY Installation: The included Quick Connect® pre-charged line set is designed to simplify installation without the need for vacuum pumps, refrigerant charging, or specialized HVAC tools.
  • Heating and Cooling All Year: The 18,000 BTU heat pump efficiently heats and cools rooms up to approximately 1,000 sq. ft., providing reliable comfort through every season.
  • Efficient Inverter Technology: With a 17.5 SEER2 rating, the inverter-driven compressor automatically adjusts performance to help reduce energy consumption while maintaining a consistent indoor temperature.
  • Low-Noise Operation: Designed to operate quietly, making it an excellent choice for living spaces where reduced sound levels help create a more comfortable environment.

11.5 ft. Quick Connect Line Set Included

The included 11.5 ft. Quick Connect pre-charged line set comes ready for installation, eliminating the need for refrigerant charging, vacuuming, or specialized HVAC equipment. This convenient design helps save time and makes DIY installation more manageable.

Smart Wi-Fi Control

Built-in Wi-Fi allows you to control your mini split from virtually anywhere using the SmartHVAC app on your compatible smartphone or tablet. Adjust temperatures, change operating modes, set schedules, and manage your home's comfort whether you're at home or on the go.

Dependable Cold-Weather Heating

Built to provide year-round performance, this heat pump delivers reliable heating in outdoor temperatures as low as -13°F. Advanced inverter technology continuously adjusts system output to help maintain a comfortable indoor climate during colder weather.

What’s Included

  • MRCOOL DIY Select 18,000 BTU Ductless Mini Split Outdoor Condenser (DIYS-18-HP-C-230A11-O)
  • MRCOOL DIY Select 18,000 BTU Ductless Mini Split Indoor Air Handler (DIYS-18-HP-WMAH-230A13-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

  • 21" 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- DIYCOUPLER-1412K75C • 16 ft - DIY16-1412-O • 25 ft - DIY25-1412-O • 35 ft - DIY35-1412C-O • 50 ft - DIY50-1412C-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.

18,000 BTU MRCOOL Single Zone Condenser - R454B

Deliver Powerful Heating and Cooling With an Easy-To-Install Outdoor Condenser Unit

Upgrade your comfort with the MRCOOL DIY 18,000 BTU Select Single Zone Mini Split Heat Pump Condenser —the outdoor unit is designed for year-round heating and cooling in spaces up to 1,000 square feet. Built for homeowners who want flexibility, performance, and easier installation, this condenser combines efficient performance with DIY convenience. Pairs effortlessly with compatible MRCOOL DIY Select indoor air handler(DIYS-18-HP-WMAH-230A13-O)

Key Features

  • Designed for DIY Installation — Comes with MRCOOL’s 11.5 ft pre-charged Quick Connect line set system to help simplify setup and reduce installation barriers.
  • Efficient Year-Round Comfort — Delivers dependable heating and cooling performance for living rooms, primary bedrooms, finished basements, and other larger living areas.
  • 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.

18,000 BTU MRCOOL Wall Mounted Air Handler - R454B

Enjoy Personalized Comfort Year-Round With an Easy-To-Install Mini Split Air Handler

Transform the comfort of your space with the MRCOOL DIY 18,000 BTU Select Single Zone Wall Mounted Mini Split Air Handler. Designed to deliver reliable and efficient heating and cooling for rooms up to 1,000 square feet year-round. Combining DIY Quick Connect installation with quiet performance, this indoor unit makes it easy to enjoy personalized comfort in primary bedrooms, home offices, finished basements, and other larger living spaces.

Key Features

  • Efficient Performance You Can Feel —When paired with a compatible MRCOOL DIY Select condenser (DIYS-18-HP-C-230A11-O), it will maximize comfort while reducing energy use.
  • Perfect Comfort for Larger Spaces — The 18,000 BTU capacity is optimized for larger residential spaces to deliver balanced, consistent heating and cooling.
  • DIY-Friendly Installation — Designed with Quick Connect compatibility to reduce the complexity of installation when compared to traditional HVAC setups.
  • Ultra-Quiet Operation — Operating at sound levels as low as 18.5 dB(A), this system creates a comfortable environment without creating distracting background noise.

Warranty

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

16ft 1/4 x 1/2 Line Set for DIY 18K Indoor - R454B

DIY16-1412-O 16ft 1/4 x 1/2 Lineset for DIY 18K Indoor - R454B

The MRCOOL DIY16-1412-O is a 16-foot pre-charged lineset designed for MRCOOL® DIY 18K indoor units using R-454B refrigerant. This lineset offers an easy-to-install, reliable solution that eliminates the need for vacuum pumps or refrigerant charging.

Featuring Quick Connect fittings, it allows for quick, tool-free connections between indoor and outdoor units. The durable insulation and corrosion-resistant copper tubing provide excellent thermal performance and long-lasting durability.

Key Features:

  • Length: 16 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 tool-free installation
  • Insulation: High-quality insulation to prevent condensation and improve energy efficiency
  • Durability: Built with corrosion-resistant materials for extended service life

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

21" Wall Mount Bracket

This wall mount bracket is perfect for outdoor mini split condensers. The length of the the wall bracket arms are 21" long. The condensing unit is mounted onto the L-shaped brackets and fastened using the bolts and anti-vibration washers provided.

Features:

  • 21" 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.

Installation Kit for Condensers

4Ensure a professional and secure installation for your condenser with this comprehensive installation kit. Designed to provide all the essential components needed for a smooth setup, this kit helps protect your system while ensuring proper electrical and refrigerant connections.

Key Features:

All-in-One Kit: Includes key accessories for a professional-grade installation.
Enhanced System Protection: Features a surge protector and disconnect safety switch for added safety.
Reliable Electrical Connections: Comes with a whip and charging adapter to ensure proper power supply.
Secure Wall Penetration: Telescoping wall sleeve protects and stabilizes refrigerant and electrical lines.
HVAC Professional Recommended: Ideal for new installations and system replacements.

What’s Included:

  • 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

Equip your condenser with everything needed for a safe, durable, and professional installation. Order your Condenser Installation Kit today!

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.

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.

More Information
MRCOOL DIY 18,000 BTU Select Single Zone Mini Split Heat Pump Condenser – R454B | 230V
FeatureSpec
SKUDIYS-18-HP-C-230A11-O
Refrigerant Charge2.18 lbs (Pre-Charged for 11.5ft Line Set)
Weight (in lbs)82.230000
AHRI Certificate Number218004486
Brand/ManufacturerMRCOOL
Cooling BTU17,000 BTU
Heating BTU18,000 BTU
Decibel Level (dBA)55 dBA
Energy StarYes
RefrigerantR454B
HSPF28.5
SEER2 (Efficiency)17.3
EER29
Liquid Line1/4"
Suction Line1/2"
Electrical208/230V | 1 Phase | 60Hz
Max Breaker Size20 Amps
Min. Breaker Size15 Amps
BTU/Tonnage18,000 BTU/1.5 Ton
Mini Split TypeWall Mounted
Min/Max Outdoor Temp for Heating-13°  to 75° F
Min/Max Outdoor Temp for Cooling-13° to 122° F
Zone CompatibilitySingle Zone
Height21.85"
Width30.12"
Depth11.93"
Warranty1 Year Parts 2 Year Compressor
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
MRCOOL DIY 18,000 BTU Select Single Zone White Wall Mounted Mini Split Air Handler – R454B | 230V
FeatureSpec
SKUDIYS-18-HP-WMAH-230A13-O
Weight (in lbs)44.970000
Brand/ManufacturerMRCOOL
ControllerIncluded
Cooling BTU17,000 BTU
Heating BTU18,000 BTU
Decibel Level (dBA)18.5 - 46.5 dBA
RefrigerantR454B
Liquid Line1/4"
Suction Line1/2"
Electrical230V | 1 Phase | 60Hz
BTU/Tonnage18,000 BTU/1.5 Ton
Mini Split TypeWall Mounted
Zone CompatibilitySingle Zone
Height12.64"
Width38.23"
Depth8.98"
Warranty1 Year Parts 2 Year Compressor
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
50ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor w/ DIY Pro Cable - R454B
FeatureSpec
SKUDIY50-1412C-O
Weight (in lbs)26.700000
Brand/ManufacturerMRCOOL
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.
35ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor w/ DIY Pro Cable - R454B
FeatureSpec
SKUDIY35-1412C-O
Weight (in lbs)18.300000
Brand/ManufacturerMRCOOL
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.
16ft 1/4 x 1/2 Line Set for DIY 18K Indoor - R454B
FeatureSpec
SKUDIY16-1412-O
Weight (in lbs)8.800000
Brand/ManufacturerMRCOOL
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.
21" Wall Mount Bracket for Mini Split Systems
FeatureSpec
SKU230-B2L
Weight (in lbs)9.200000
Brand/ManufacturerOnline Supply
Length40"
Height3"
Width6"
Safety InformationPROPOSITION 65 WARNING
E Lite Equipment Pad and Risers Kit 18" x 38" x 3"
FeatureSpec
SKU87762 / EL1838-3
Weight (in lbs)25.000000
Brand/ManufacturerOnline Supply
Height3"
Width18"
Depth38"
Safety InformationPROPOSITION 65 WARNING
Cielo Breez Max Mini Split Thermostat with WiFi
FeatureSpec
SKUBM101WA
Weight (in lbs)1.000000
Brand/ManufacturerCielo
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
Installation Kit for Condensers - Accessory Set
FeatureSpec
SKUMSK001
Weight (in lbs)15.000000
Brand/ManufacturerOnline Supply
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
25ft 1/4 x 1/2 Line Set for DIY 18K Indoor - R454B
FeatureSpec
SKUDIY25-1412-O
Weight (in lbs)12.100000
Brand/ManufacturerMRCOOL
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.
Top reviews
  1. Good product
    Quality
    100%
    Service
    100%
    Price
    100%
    Straight forward connections and assembly. Works as it should.

    Review by

    Posted on

  2. System arrived in a short time. Good communication between sales, delivery folks and ourselves. Furnace had damage on one side that we didn't see until we removed all items from pallet. Damage was cosmetic so we accepted a rebate and kept the furnace vs
    Quality
    100%
    Service
    100%
    Price
    100%
    The brand names for the components are new to this area so our hvac tech wasn't completely familiar with the low voltage connections between the furnace, heatpump and the t stat but the technical assistance guy walked us right through everything and answer all of our questions. System is so quiet , we barely hear it running. Heating right now but expect the air conditioning to work just as well.

    Review by

    Posted on

  3. Quality parts and support
    Quality
    100%
    Price
    100%
    Service
    100%
    online support was fantastic. Always a prompt reply to my questions. Quality of parts great!

    Review by

    Posted on

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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.

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