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National Mini Splits · MRCOOL equipment department

Installation & Accessories

Find Installation & Accessories by exact model, dimensions and intended equipment family. Accessories that appear similar can have different voltage, capacity, cabinet, connection or generation requirements, so verify the primary equipment model before ordering.

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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.

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MRCOOL Universal Series 8kW Heat Strip with Circuit Breaker, UHK08 — MRCOOL model UHK08, product image 1MRCOOL Universal Series 8kW Heat Strip with Circuit Breaker, UHK08UHK08MRCOOL Universal Series 5kW Heat Strip with Circuit Breaker, UHK05 — MRCOOL model UHK05, product image 1MRCOOL Universal Series 5kW Heat Strip with Circuit Breaker, UHK05UHK05MRCOOL Universal Series 20kW Heat Strip with Circuit Breaker, UHK20 — MRCOOL model UHK20, product image 1MRCOOL Universal Series 20kW Heat Strip with Circuit Breaker, UHK20UHK20MRCOOL Universal Series 15kW Heat Strip with Circuit Breaker, UHK15 — MRCOOL model UHK15, product image 1MRCOOL Universal Series 15kW Heat Strip with Circuit Breaker, UHK15UHK15MRCOOL Universal Series 10kW Heat Strip with Circuit Breaker, UHK10 — MRCOOL model UHK10, product image 1MRCOOL Universal Series 10kW Heat Strip with Circuit Breaker, UHK10UHK10MRCOOL Smart Wi-Fi Mini-Stat (Compatible with MRCOOL Mini-Splits), MST05 — MRCOOL model MST05, product image 1MRCOOL Smart Wi-Fi Mini-Stat (Compatible with MRCOOL Mini-Splits), MST05MST05

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

Current department114 products
MRCOOLMCAEHWD5X1AA
MRCOOL

MRCOOL 5kW Heat Kit for Signature Series R-454B Stud Mount Air Handlers, MCAEHWD5X1AA

Model: MCAEHWD5X1AA
$147.40
Available to order View product details
MRCOOL 5kW Heat Kit for Signature Series R-454B Multiposition Air Handlers, MCAEHFD5X1AA — MRCOOL model MCAEHFD5X1AA, product image 1
MRCOOL

MRCOOL 5kW Heat Kit for Signature Series R-454B Multiposition Air Handlers, MCAEHFD5X1AA

Model: MCAEHFD5X1AA
$149.24
Available to order View product details
MRCOOLMVPHK05
MRCOOL

MRCOOL 5kW Heat Kit for Hyper Heat Gen 2 & VersaPro Gen 2 Systems, MVPHK05

Model: MVPHK05
$150.00
Available to order View product details
MRCOOLMC50-3858K
MRCOOL

MRCOOL 50FT 3/8 x 5/8 Flared Line Set Kit for 24K and 36K Olympus and Advantage Mini Split, MC50-3858K

Model: MC50-3858K
$329.00
Available to order View product details
MRCOOLMC50-1438K
MRCOOL

MRCOOL 50FT 1/4 x 3/8 Flared Line Set Kit for 9K & 12K Olympus and Advantage Mini Split, MC50-1438K

Model: MC50-1438K
$308.00
Available to order View product details
MRCOOLMC50-1412K
MRCOOL

MRCOOL 50FT 1/4 x 1/2 Flared Line Set Kit for 18K Olympus and Advantage Mini Split, MC50-1412K

Model: MC50-1412K
$315.00
Available to order View product details
MRCOOL 5 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK05U — MRCOOL model MHK05U, product image 1
MRCOOL

MRCOOL 5 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK05U

Model: MHK05U
$137.00
Available to order View product details
MRCOOL 5 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK05B — MRCOOL model MHK05B, product image 1
MRCOOL

MRCOOL 5 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK05B

Model: MHK05B
$159.00
Available to order View product details
MRCOOL 5 KW Heat Strip for Packaged Units, MHK05P — MRCOOL model MHK05P, product image 1
MRCOOL

MRCOOL 5 KW Heat Strip for Packaged Units, MHK05P

Model: MHK05P
$163.00
Available to order View product details
MRCOOL 5 KW Heat Strip for VersaPro Packaged Units, MHK05PB — MRCOOL model MHK05PB, product image 1
MRCOOL

MRCOOL 5 KW Heat Strip for VersaPro Packaged Units, MHK05PB

Model: MHK05PB
$178.00
Available to order View product details
MRCOOL 35 FT Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV35-3834 — MRCOOL model NV35-3834, product image 1
MRCOOL

MRCOOL 35 FT Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV35-3834

Model: NV35-3834
$585.00
Available to order View product details
MRCOOL 3/8 No-Vac Coupler + 3/4 No-Vac Coupler for Central Ducted and Universal Series, NVCOUPLER-3834 — MRCOOL model NVCOUPLER-3834, product image 1
MRCOOL

MRCOOL 3/8 No-Vac Coupler + 3/4 No-Vac Coupler for Central Ducted and Universal Series, NVCOUPLER-3834

Model: NVCOUPLER-3834
$80.00
Available to order View product details
MRCOOL 25ft 3/8 x 5/8 Pre-Charged Lineset w/ Communication Cable for DIY 24K & 36K Indoor, DIY25-3858C — MRCOOL model DIY25-3858C, product image 1
MRCOOL

MRCOOL 25ft 3/8 x 5/8 Pre-Charged Lineset w/ Communication Cable for DIY 24K & 36K Indoor, DIY25-3858C

Model: DIY25-3858C
$490.00
Available to order View product details
MRCOOL 25ft 3/8 x 5/8 Pre-Charged Lineset for DIY 24K & 36K Indoor, DIY25-3858 — MRCOOL model DIY25-3858, product image 1
MRCOOL

MRCOOL 25ft 3/8 x 5/8 Pre-Charged Lineset for DIY 24K & 36K Indoor, DIY25-3858

Model: DIY25-3858
$256.00
Available to order View product details
MRCOOL 25FT 3/8 x 5/8 Flared Line Set Kit for 24K and 36K Olympus and Advantage Mini Split, MC25-3858 — MRCOOL model MC25-3858, product image 1
MRCOOL

MRCOOL 25FT 3/8 x 5/8 Flared Line Set Kit for 24K and 36K Olympus and Advantage Mini Split, MC25-3858

Model: MC25-3858
$151.00
Available to order View product details
MRCOOL 25FT 1/4 x 3/8 Flared Line Set Kit for 9K & 12K Olympus and Advantage Mini Split, MC25-1438 — MRCOOL model MC25-1438, product image 1
MRCOOL

MRCOOL 25FT 1/4 x 3/8 Flared Line Set Kit for 9K & 12K Olympus and Advantage Mini Split, MC25-1438

Model: MC25-1438
$126.00
Available to order View product details
MRCOOL 25ft 1/4 x 1/2 Pre-Charged Lineset w/ Communication Wire for DIY 9K, 12K & 18K Indoor, DIY25-1412C — MRCOOL model DIY25-1412C, product image 1
MRCOOL

MRCOOL 25ft 1/4 x 1/2 Pre-Charged Lineset w/ Communication Wire for DIY 9K, 12K & 18K Indoor, DIY25-1412C

Model: DIY25-1412C
$457.00
Available to order View product details
MRCOOL 25ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor, DIY25-1412 — MRCOOL model DIY25-1412, product image 1
MRCOOL

MRCOOL 25ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor, DIY25-1412

Model: DIY25-1412
$233.00
Available to order View product details
MRCOOL 25FT 1/4 x 1/2 Flared Line Set Kit for 18K Olympus and Advantage Mini Split, MC25-1412 — MRCOOL model MC25-1412, product image 1
MRCOOL

MRCOOL 25FT 1/4 x 1/2 Flared Line Set Kit for 18K Olympus and Advantage Mini Split, MC25-1412

Model: MC25-1412
$137.00
Available to order View product details
MRCOOLNV25-3834-O Current offer
MRCOOL

MRCOOL 25 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Gen 2 Central Ducted and VersaPro Series, NV25-3834-O

Model: NV25-3834-O
$523.93Compare at$568.32
You save $44.397% off
Available to order View product details
MRCOOL 25 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV25-3834 — MRCOOL model NV25-3834, product image 1
MRCOOL

MRCOOL 25 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV25-3834

Model: NV25-3834
$470.00
Available to order View product details
MRCOOLPHK20H
MRCOOL

MRCOOL 20kw ProDirect Heat Kit, PHK20H

Model: PHK20H
$421.00
Available to order View product details
MRCOOL 20kW Heat Kit with Circuit Breaker for TruInverter series, MCAEHFD20X1BA — MRCOOL model MCAEHFD20X1BA, product image 1
MRCOOL

MRCOOL 20kW Heat Kit with Circuit Breaker for TruInverter series, MCAEHFD20X1BA

Model: MCAEHFD20X1BA
$236.13
Available to order View product details
MRCOOL 20kW Heat Kit for the Central Ducted Air Handler, CENTRALHK20 — MRCOOL model CENTRALHK20, product image 1
MRCOOL

MRCOOL 20kW Heat Kit for the Central Ducted Air Handler, CENTRALHK20

Model: CENTRALHK20
$442.00
Available to order View product details
MRCOOL 20kW Heat Kit for Hyper Heat Gen 2 & VersaPro Gen 2 Systems, MVPHK20 — MRCOOL model MVPHK20, product image 1
MRCOOL

MRCOOL 20kW Heat Kit for Hyper Heat Gen 2 & VersaPro Gen 2 Systems, MVPHK20

Model: MVPHK20
$280.00
Available to order View product details
MRCOOL 20 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK20U — MRCOOL model MHK20U, product image 1
MRCOOL

MRCOOL 20 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK20U

Model: MHK20U
$306.00
Available to order View product details
MRCOOL 20 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK20B — MRCOOL model MHK20B, product image 1
MRCOOL

MRCOOL 20 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK20B

Model: MHK20B
$351.00
Available to order View product details
MRCOOL 20 KW Heat Strip with Circuit Breaker for Packaged Units, MHK20P — MRCOOL model MHK20P, product image 1
MRCOOL

MRCOOL 20 KW Heat Strip with Circuit Breaker for Packaged Units, MHK20P

Model: MHK20P
$367.00
Available to order View product details
MRCOOL 20 KW Heat Strip for VersaPro Packaged Units, MHK20PB — MRCOOL model MHK20PB, product image 1
MRCOOL

MRCOOL 20 KW Heat Strip for VersaPro Packaged Units, MHK20PB

Model: MHK20PB
$306.00
Available to order View product details
MRCOOL 16ft 3/8 x 5/8 Pre-Charged Lineset for DIY 24K & 36K Indoor, DIY16-3858 — MRCOOL model DIY16-3858, product image 1
MRCOOL

MRCOOL 16ft 3/8 x 5/8 Pre-Charged Lineset for DIY 24K & 36K Indoor, DIY16-3858

Model: DIY16-3858
$231.00
Available to order View product details
MRCOOL 16FT 3/8" x 5/8" Flared Line Set Kit for 24K and 36K Olympus and Advantage Mini Split, MC16-3858 — MRCOOL model MC16-3858, product image 1
MRCOOL

MRCOOL 16FT 3/8" x 5/8" Flared Line Set Kit for 24K and 36K Olympus and Advantage Mini Split, MC16-3858

Model: MC16-3858
$144.00
Available to order View product details
MRCOOL 16FT 1/4" x 3/8" Flared Line Set Kit for 9K & 12K Olympus and Advantage Mini Split, MC16-1438 — MRCOOL model MC16-1438, product image 1
MRCOOL

MRCOOL 16FT 1/4" x 3/8" Flared Line Set Kit for 9K & 12K Olympus and Advantage Mini Split, MC16-1438

Model: MC16-1438
$121.00
Available to order View product details
MRCOOL 16ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor, DIY16-1412 — MRCOOL model DIY16-1412, product image 1
MRCOOL

MRCOOL 16ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor, DIY16-1412

Model: DIY16-1412
$205.00
Available to order View product details
MRCOOL 16FT 1/4" x 1/2" Flared Line Set Kit for 18K Olympus and Advantage Mini Split, MC16-1412 — MRCOOL model MC16-1412, product image 1
MRCOOL

MRCOOL 16FT 1/4" x 1/2" Flared Line Set Kit for 18K Olympus and Advantage Mini Split, MC16-1412

Model: MC16-1412
$133.00
Available to order View product details
MRCOOLPHK15H
MRCOOL

MRCOOL 15kw ProDirect Heat Kit, PHK15H

Model: PHK15H
$405.00
Available to order View product details
MRCOOL 15kW Heat Kit with Circuit Breaker for TruInverter series, MCAEHFD15X1BA — MRCOOL model MCAEHFD15X1BA, product image 1
MRCOOL

MRCOOL 15kW Heat Kit with Circuit Breaker for TruInverter series, MCAEHFD15X1BA

Model: MCAEHFD15X1BA
$203.89
Available to order View product details
MRCOOL 15kW Heat Kit for Hyper Heat Gen 2 & VersaPro Gen 2 Systems, MVPHK15 — MRCOOL model MVPHK15, product image 1
MRCOOL

MRCOOL 15kW Heat Kit for Hyper Heat Gen 2 & VersaPro Gen 2 Systems, MVPHK15

Model: MVPHK15
$237.00
Available to order View product details
MRCOOL 15kW Heat Kit for Central Ducted Air Handler, CENTRALHK15 — MRCOOL model CENTRALHK15, product image 1
MRCOOL

MRCOOL 15kW Heat Kit for Central Ducted Air Handler, CENTRALHK15

Model: CENTRALHK15
$213.00
Available to order View product details
MRCOOL 15 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK15U — MRCOOL model MHK15U, product image 1
MRCOOL

MRCOOL 15 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK15U

Model: MHK15U
$260.00
Available to order View product details
MRCOOL 15 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK15B — MRCOOL model MHK15B, product image 1
MRCOOL

MRCOOL 15 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK15B

Model: MHK15B
$306.00
Available to order View product details
MRCOOL 15 KW Heat Strip with Circuit Breaker for Packaged Units, MHK15P — MRCOOL model MHK15P, product image 1
MRCOOL

MRCOOL 15 KW Heat Strip with Circuit Breaker for Packaged Units, MHK15P

Model: MHK15P
$318.00
Available to order View product details
MRCOOL 15 KW Heat Strip for VersaPro Packaged Units, MHK15PB — MRCOOL model MHK15PB, product image 1
MRCOOL

MRCOOL 15 KW Heat Strip for VersaPro Packaged Units, MHK15PB

Model: MHK15PB
$264.00
Available to order View product details
MRCOOLNV15-3834-O Current offer
MRCOOL

MRCOOL 15 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Gen 2 Central Ducted and VersaPro Series, NV15-3834-O

Model: NV15-3834-O
$393.60Compare at$427.00
You save $33.407% off
Available to order View product details
MRCOOL 15 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV15-3834 — MRCOOL model NV15-3834, product image 1
MRCOOL

MRCOOL 15 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV15-3834

Model: NV15-3834
$388.00
Available to order View product details
MRCOOL 10kW Heat Kit with Circuit Breaker for TruInverter series, MCAEHFD10X1BA — MRCOOL model MCAEHFD10X1BA, product image 1
MRCOOL

MRCOOL 10kW Heat Kit with Circuit Breaker for TruInverter series, MCAEHFD10X1BA

Model: MCAEHFD10X1BA
$139.74
Available to order View product details
MRCOOL 10kW Heat Kit for Signature Series R-454B Multiposition Air Handlers, MCAEHFD10X1AA — MRCOOL model MCAEHFD10X1AA, product image 1
MRCOOL

MRCOOL 10kW Heat Kit for Signature Series R-454B Multiposition Air Handlers, MCAEHFD10X1AA

Model: MCAEHFD10X1AA
$180.96
Available to order View product details
MRCOOLMVPHK10
MRCOOL

MRCOOL 10kW Heat Kit for Hyper Heat Gen 2 & VersaPro Gen 2 Systems, MVPHK10

Model: MVPHK10
$194.00
Available to order View product details
MRCOOL 10kW Heat Kit for Central Ducted Air Handler, CENTRALHK10 — MRCOOL model CENTRALHK10, product image 1
MRCOOL

MRCOOL 10kW Heat Kit for Central Ducted Air Handler, CENTRALHK10

Model: CENTRALHK10
$197.00
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 Installation & Accessories

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

Accessories are model-specific even when their names look universal. Match the accessory model to the exact indoor or outdoor equipment, generation, refrigerant, voltage, connection type and current manufacturer documentation.

Measure the route and installation conditions before selecting line sets, drainage, mounting, controls or heat kits. Confirm which parts are included with the primary equipment so the order is complete without unnecessary duplicates.

Common buying questions

Installation & Accessories 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.