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National Mini Splits · MRCOOL equipment department

1 Zone Mini Splits

Compare 1 Zone Mini Splits by exact model, capacity, voltage, indoor-unit style and installation configuration. Determine whether each listing is a complete system or one component, then verify the outdoor unit, indoor unit and line-set requirements together.

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Current offer
MRCOOL MRCOOL DIY Select 24,000 BTU Single Zone Mini Split System 230V with 11.5 ft. DIY Quick Connect Line Set, DIYS-24-HP-230A11-O DIYS-24-HP-230A11-O
$1,899.00Compare at$2,499.00
You save $600.0024% off
Current offer
MRCOOL MRCOOL DIY Select 12,000 BTU Single Zone Mini Split System 115V with 11.5 ft. DIY Quick Connect Line Set, DIYS-12-HP-115A11-O DIYS-12-HP-115A11-O
$1,399.00Compare at$1,749.00
You save $350.0020% off
Current offer
MRCOOL MRCOOL DIY Select 18,000 BTU Single Zone Mini Split System 230V with 11.5 ft. DIY Quick Connect Line Set, DIYS-18-HP-230A11-O DIYS-18-HP-230A11-O
$1,690.00Compare at$2,149.00
You save $459.0021% off
MRCOOL DIY 5th Gen EasyPro 9K BTU Single Zone Mini Split Complete System 115V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-09-HP-11511DE-O — MRCOOL model EZPRO-09-HP-11511DE-OCurrent offer
MRCOOL MRCOOL DIY 5th Gen EasyPro 9K BTU Single Zone Mini Split Complete System 115V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-09-HP-11511DE-O EZPRO-09-HP-11511DE-O
$1,487.00Compare at$1,969.00
You save $482.0024% off
MRCOOL DIY 5th Gen EasyPro 24K BTU Single Zone Mini Split Complete System 230V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-24-HP-23011DE-O — MRCOOL model EZPRO-24-HP-23011DE-OCurrent offer
MRCOOL MRCOOL DIY 5th Gen EasyPro 24K BTU Single Zone Mini Split Complete System 230V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-24-HP-23011DE-O EZPRO-24-HP-23011DE-O
$2,109.00Compare at$2,949.00
You save $840.0028% off
MRCOOL DIY 5th Gen Hyper Heat 18K BTU Single Zone Mini Split System 230V, DIYHH-18-HP-WM-230D25-O — MRCOOL model DIYHH-18-HP-WM-230D25-O, product image 1Current offer
MRCOOL MRCOOL DIY 5th Gen Hyper Heat 18K BTU Single Zone Mini Split System 230V, DIYHH-18-HP-WM-230D25-O DIYHH-18-HP-WM-230D25-O
$3,173.00Compare at$3,820.48
You save $647.4816% off
Not sure where to begin?Open the 1 Zone Mini Splits buying checklist

Confirm whether the listing is a complete system or an individual component. Match the full model numbers, capacity, voltage, refrigerant, generation and included equipment against current MRCOOL documentation.

Plan electrical work, line sets, drainage, mounting and freight access before ordering. For multi-component systems, verify the exact approved combination—not only the family name.

Read planning guides →Ask an equipment question →
National Mini Splits knowledge network

Products, documents and practical HVAC research—connected.

Use these original research paths to frame the purchase, then verify the exact model in current MRCOOL documentation and applicable requirements for the installation address.

Live catalog connections

Compare real products in 1 Zone Mini Splits

Open all 18 products →
MRCOOL DIY Select 24,000 BTU Single Zone Mini Split System 230V with 11.5 ft. DIY Quick Connect Line Set, DIYS-24-HP-230A11-ODIYS-24-HP-230A11-OMRCOOL DIY Select 12,000 BTU Single Zone Mini Split System 115V with 11.5 ft. DIY Quick Connect Line Set, DIYS-12-HP-115A11-ODIYS-12-HP-115A11-OMRCOOL DIY Select 18,000 BTU Single Zone Mini Split System 230V with 11.5 ft. DIY Quick Connect Line Set, DIYS-18-HP-230A11-ODIYS-18-HP-230A11-OMRCOOL DIY 5th Gen EasyPro 9K BTU Single Zone Mini Split Complete System 115V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-09-HP-11511DE-O — MRCOOL model EZPRO-09-HP-11511DE-OMRCOOL DIY 5th Gen EasyPro 9K BTU Single Zone Mini Split Complete System 115V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-09-HP-11511DE-OEZPRO-09-HP-11511DE-OMRCOOL DIY 5th Gen EasyPro 24K BTU Single Zone Mini Split Complete System 230V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-24-HP-23011DE-O — MRCOOL model EZPRO-24-HP-23011DE-OMRCOOL DIY 5th Gen EasyPro 24K BTU Single Zone Mini Split Complete System 230V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-24-HP-23011DE-OEZPRO-24-HP-23011DE-OMRCOOL DIY 5th Gen Hyper Heat 18K BTU Single Zone Mini Split System 230V, DIYHH-18-HP-WM-230D25-O — MRCOOL model DIYHH-18-HP-WM-230D25-O, product image 1MRCOOL DIY 5th Gen Hyper Heat 18K BTU Single Zone Mini Split System 230V, DIYHH-18-HP-WM-230D25-ODIYHH-18-HP-WM-230D25-O

Educational content is general information, not engineering, legal, tax or installation advice. Manufacturer documentation, certified ratings and applicable requirements control.

Current department18 products
MRCOOLDIYS-24-HP-230A11-O Current offer
MRCOOL

MRCOOL DIY Select 24,000 BTU Single Zone Mini Split System 230V with 11.5 ft. DIY Quick Connect Line Set, DIYS-24-HP-230A11-O

Model: DIYS-24-HP-230A11-O
$1,899.00Compare at$2,499.00
You save $600.0024% off
Available to order View product details
MRCOOLDIYS-12-HP-115A11-O Current offer
MRCOOL

MRCOOL DIY Select 12,000 BTU Single Zone Mini Split System 115V with 11.5 ft. DIY Quick Connect Line Set, DIYS-12-HP-115A11-O

Model: DIYS-12-HP-115A11-O
$1,399.00Compare at$1,749.00
You save $350.0020% off
Available to order View product details
MRCOOLDIYS-18-HP-230A11-O Current offer
MRCOOL

MRCOOL DIY Select 18,000 BTU Single Zone Mini Split System 230V with 11.5 ft. DIY Quick Connect Line Set, DIYS-18-HP-230A11-O

Model: DIYS-18-HP-230A11-O
$1,690.00Compare at$2,149.00
You save $459.0021% off
Available to order View product details
MRCOOL DIY 5th Gen EasyPro 9K BTU Single Zone Mini Split Complete System 115V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-09-HP-11511DE-O — MRCOOL model EZPRO-09-HP-11511DE-O Current offer
MRCOOL

MRCOOL DIY 5th Gen EasyPro 9K BTU Single Zone Mini Split Complete System 115V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-09-HP-11511DE-O

Model: EZPRO-09-HP-11511DE-O
$1,487.00Compare at$1,969.00
You save $482.0024% off
Available to order View product details
MRCOOL DIY 5th Gen EasyPro 24K BTU Single Zone Mini Split Complete System 230V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-24-HP-23011DE-O — MRCOOL model EZPRO-24-HP-23011DE-O Current offer
MRCOOL

MRCOOL DIY 5th Gen EasyPro 24K BTU Single Zone Mini Split Complete System 230V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-24-HP-23011DE-O

Model: EZPRO-24-HP-23011DE-O
$2,109.00Compare at$2,949.00
You save $840.0028% off
Available to order View product details
MRCOOL DIY 5th Gen Hyper Heat 18K BTU Single Zone Mini Split System 230V, DIYHH-18-HP-WM-230D25-O — MRCOOL model DIYHH-18-HP-WM-230D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen Hyper Heat 18K BTU Single Zone Mini Split System 230V, DIYHH-18-HP-WM-230D25-O

Model: DIYHH-18-HP-WM-230D25-O
$3,173.00Compare at$3,820.48
You save $647.4816% off
Available to order View product details
MRCOOLDIYS-09-HP-115A11-O Current offer
MRCOOL

MRCOOL DIY Select 9,000 BTU Single Zone Mini Split System 115V with 11.5 ft. DIY Quick Connect Line Set, DIYS-09-HP-115A11-O

Model: DIYS-09-HP-115A11-O
$1,249.00Compare at$1,599.00
You save $350.0021% off
Available to order View product details
MRCOOL DIY 5th Gen Hyper Heat 12K BTU Single Zone Mini Split System 230V, DIYHH-12-HP-WM-230D25-O — MRCOOL model DIYHH-12-HP-WM-230D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen Hyper Heat 12K BTU Single Zone Mini Split System 230V, DIYHH-12-HP-WM-230D25-O

Model: DIYHH-12-HP-WM-230D25-O
$2,532.00Compare at$3,097.00
You save $565.0018% off
Available to order View product details
MRCOOL DIY 5th Gen EasyPro 18K BTU Single Zone Mini Split Complete System 230V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-18-HP-23011DE-O — MRCOOL model EZPRO-18-HP-23011DE-O Current offer
MRCOOL

MRCOOL DIY 5th Gen EasyPro 18K BTU Single Zone Mini Split Complete System 230V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-18-HP-23011DE-O

Model: EZPRO-18-HP-23011DE-O
$1,806.00Compare at$2,479.00
You save $673.0027% off
Available to order View product details
MRCOOL DIY 5th Gen Hyper Heat 12K BTU Single Zone Ceiling Cassette Mini Split System 230V, DIYHH-12-HP-CM-230D25-O — MRCOOL model DIYHH-12-HP-CM-230D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen Hyper Heat 12K BTU Single Zone Ceiling Cassette Mini Split System 230V, DIYHH-12-HP-CM-230D25-O

Model: DIYHH-12-HP-CM-230D25-O
$3,264.00Compare at$3,932.52
You save $668.5216% off
Available to order View product details
MRCOOL DIY 5th Gen Hyper Heat 18K BTU Single Zone Ceiling Cassette Mini Split System 230V, DIYHH-18-HP-CM-230D25-O — MRCOOL model DIYHH-18-HP-CM-230D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen Hyper Heat 18K BTU Single Zone Ceiling Cassette Mini Split System 230V, DIYHH-18-HP-CM-230D25-O

Model: DIYHH-18-HP-CM-230D25-O
$3,682.00Compare at$4,436.14
You save $754.1416% off
Available to order View product details
MRCOOL DIY 5th Gen E Star 9K BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-09-HP-WM-115D25-O — MRCOOL model DIY-09-HP-WM-115D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen E Star 9K BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-09-HP-WM-115D25-O

Model: DIY-09-HP-WM-115D25-O
$2,329.00Compare at$2,820.00
You save $491.0017% off
Available to order View product details
MRCOOL DIY 5th Gen EasyPro 12K BTU Single Zone Mini Split Complete System 115V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-12-HP-11511DE-O — MRCOOL model EZPRO-12-HP-11511DE-O Current offer
MRCOOL

MRCOOL DIY 5th Gen EasyPro 12K BTU Single Zone Mini Split Complete System 115V with 11.5 ft. DIY Quick Connect Line Set, EZPRO-12-HP-11511DE-O

Model: EZPRO-12-HP-11511DE-O
$1,599.00Compare at$1,849.00
You save $250.0013% off
Available to order View product details
MRCOOL DIY 5th Gen E Star 18K BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O — MRCOOL model DIY-18-HP-WM-230D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen E Star 18K BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O

Model: DIY-18-HP-WM-230D25-O
$2,909.00Compare at$3,371.00
You save $462.0013% off
Available to order View product details
MRCOOL DIY 5th Gen E Star 24K BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-24-HP-WM-230D25-O — MRCOOL model DIY-24-HP-WM-230D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen E Star 24K BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-24-HP-WM-230D25-O

Model: DIY-24-HP-WM-230D25-O
$3,329.00Compare at$3,869.00
You save $540.0013% off
Available to order View product details
MRCOOL DIY 5th Gen E Star 36K BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O — MRCOOL model DIY-36-HP-WM-230D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen E Star 36K BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O

Model: DIY-36-HP-WM-230D25-O
$3,769.00Compare at$3,943.00
You save $174.004% off
Available to order View product details
MRCOOL DIY 5th Gen E Star 12K BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-12-HP-WM-115D25-O — MRCOOL model DIY-12-HP-WM-115D25-O, product image 1 Current offer
MRCOOL

MRCOOL DIY 5th Gen E Star 12K BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-12-HP-WM-115D25-O

Model: DIY-12-HP-WM-115D25-O
$2,359.00Compare at$3,056.00
You save $697.0022% off
Available to order View product details
MRCOOL DIY 5th Gen 18K BTU Single Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 25 ft. Install Kit, DIY-18-HP-CS-230D25-O — MRCOOL model DIY-18-HP-CS-230D25-O Current offer
MRCOOL

MRCOOL DIY 5th Gen 18K BTU Single Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 25 ft. Install Kit, DIY-18-HP-CS-230D25-O

Model: DIY-18-HP-CS-230D25-O
$3,418.00Compare at$4,092.67
You save $674.6716% off
Available to order View product details
National Mini Splits resource center

Plan the complete project—not only the equipment.

Use these original guides as a starting point, then confirm the exact product manual, local requirements and qualified professional work where applicable.

01 · SizingBuild from a load calculation

Understand why climate, insulation, windows, occupancy and room use matter.

Read sizing guidance → 02 · InstallationPlan electrical, drainage and access

Review the project conditions that should be settled before equipment arrives.

Open installation planning → 03 · RefrigerantKeep generations and refrigerants matched

Do not assume indoor, outdoor or accessory components are interchangeable.

Review refrigerant changes → 04 · DocumentationSave model-specific records

Keep manuals, specifications, invoices, serials and applicable warranty terms together.

Use the document checklist → 05 · Video workshopWatch official MRCOOL demonstrations

Use product videos to supplement—not replace—the current installation manual.

Watch the video workshop → 06 · State planningVerify state and local requirements

Start with climate context and official regulatory gateways for all 50 states.

Choose a state guide →
How to shop 1 Zone Mini Splits

A precise model match saves more time than a broad category match.

Mini-split listings can represent a complete system, a single indoor unit, an outdoor condenser or a preconfigured combination. Start by identifying the number of independently controlled spaces, the intended indoor-unit style and a defensible capacity for each zone.

For a complete system, verify the outdoor model, every indoor model, total connected capacity, line-set connection type and length, voltage, refrigerant and included accessories. “DIY” describes specific installation features; it does not remove electrical, permit or local-code responsibilities.

Common buying questions

1 Zone Mini Splits FAQs

How do I know whether a listing is a complete system?

Review the product title, included-components section, product images and exact models. A family name or capacity alone does not prove that indoor and outdoor equipment are both included.

Can I match components from different MRCOOL generations?

Do not assume cross-generation compatibility. Confirm the complete combination in current MRCOOL documentation or obtain model-specific evidence before ordering.

Does square footage determine the correct system size?

No. Square footage is only one input. Climate, insulation, windows, ceiling height, orientation, occupancy and internal loads should be considered in a proper load calculation.

Where do I confirm shipping charges and delivery options?

Available shipping methods and charges are shown at checkout for the order and destination. Large equipment may require additional freight-access planning before purchase.