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Mini Split Line Sets

Find mini split line sets to connect your indoor unit to an outdoor condenser. These refrigerant lines are essential to a ductless heating and cooling installation, so compare the required line length, tubing diameters, and compatibility with your system before choosing a set.

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  1. Winado - 20000 BTU Wifi 2 Zone 12K + 12K AC Ductless Mini Split Air Conditioner & Heat Pump 23 SEER2 w/24.6 Ft Copper Line Set - White

    SKU: J2KKS5T2C7

    Product Description

    A white, Wi-Fi enabled mini split system offering dual-zone cooling and heating with app and remote control.
    See all Ductless Mini Splits
    Your price for this item is $1,329.99
  2. Insignia™ - 3.5mm Stereo Splitter Cable - Black

    SKU: J2FPJKPFCJ

    Insignia makes great products. You can't go wrong with the prices and durability....I buy their chargers through Best Buy too.I LOVE BEST BUY!...Love Best Buy as a consistent resource. Ty

    Product Description

    A black analog audio cable that splits one 3.5mm stereo jack into two for shared listening.
    See all Speaker Wire & Cables
    Your price for this item is $3.99
    Save $4
    The previous price was $7.99
  3. Pioneer - Diamante Pro Low-Ambient 1-Zone 18,000 BTU 21 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V / 230V - White

    SKU: J3GWXSRWHZ

    Like to try believe it'll work have yet to try it, but looks great

    Product Description

    A white ductless mini split heat pump offering 18,000 BTU, 21 SEER2 efficiency, and smart controls.
    See all Ductless Mini Splits
    Your price for this item is $1,138.00
  4. Pioneer - Diamante Pro Low-Ambient 1-Zone 12,000 BTU 23 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V/230V - White

    SKU: J3GWXSRWH6

    Product Description

    A white ductless mini split heat pump offering quiet, energy-efficient heating and cooling with smart features.
    See all Ductless Mini Splits
    Your price for this item is $898.00
  5. Pioneer - Quantum Ultra Low-Ambient 1-Zone 9,000 BTU 23 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 110/120V - White

    SKU: J3GWXSRKXY

    Overall, I’ve had a great experience with this mini split.

    Product Description

    An ultra-efficient white ductless mini split offers whisper-quiet heating and cooling with Wi-Fi app control.
    See all Ductless Mini Splits
    Your price for this item is $1,088.00
    Save $10
    The previous price was $1,098.00
  6. Della - Optima Ultra Heat Series 24000 BTU Mini Split AC w/Soft Airflow, 22.5 SEER2 230V,Energy Star, Heat Pump,Up to 1500 Sq.Ft - White

    SKU: JJ8Q3Z5J3S

    Product Description

    A high-efficiency white mini split AC and heat pump with Alexa control, soft airflow, and Energy Star certification.
    See all Ductless Mini Splits
    Your price for this item is $2,249.96
  7. Costway - X-Pro 35000 BTU 4 Zone 12K + 12K + 12K + 12K Mini Split Air Conditioner Heat Pump, Line Set Included - White

    SKU: JJGPSHZ58F

    Product Description

    A white, ENERGY STAR certified quad-zone mini split offers smart heating and cooling with WiFi and voice control.
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    Your price for this item is $2,989.99
    Save $2400
    The previous price was $5,389.99
  8. Della - Optima Ultra Heat Series 9000 BTU Mini Split AC w/Soft Airflow, 25 SEER2 230V, Energy Star, Heat Pump, Up to 400 Sq.Ft - White

    SKU: JJ8Q3Z5JX3

    Product Description

    An Energy Star-certified white mini split AC and heat pump with Alexa control and ultra-quiet, soft airflow.
    See all Ductless Mini Splits
    Your price for this item is $1,049.96
  9. Pioneer - Vertex 56,000 BTU 4.6 17 SEER2 Ducted Central Split Air Conditioner Inverter Heat Pump 230V - Gray

    SKU: J3GWXSRWVW

    Product Description

    A gray ducted split system offering whole-home heating and cooling with inverter technology and smart features.
    See all Ductless Mini Splits
    Your price for this item is $4,473.00
  10. Tosot - 36,000 BTU 2 Zone Mini Split Air Conditioner, 21 SEER2, Heat Pump, WiFi-Enabled Ductless Inverter, 230V, Cosmo Series - White

    SKU: J3L73Y8W39

    Product Description

    The 36,000 BTU TOSOT mini-split system includes 12,000 BTU and 24,000 BTU indoor units with independent temperature control from 61°F to 86°F, ideal for a bedroom and great room. ENERGY STAR-rated at 21 SEER2 and 10 HSPF2, it delivers up to 24% energy savings versus standard 16 SEER2 units and may qualify for federal tax rebates. The variable‑speed inverter compressor operates from -22°F heating to...
    See all Ductless Mini Splits
    Your price for this item is $3,499.99
  11. Pioneer - Diamante Pro Low-Ambient 1-Zone 24,000 BTU 21 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V/230V - White

    SKU: J3GWXSRWTC

    Product Description

    A white ductless mini split heat pump offering 24,000 BTU, 21 SEER2 efficiency, and smart controls.
    See all Ductless Mini Splits
    Your price for this item is $1,528.00
    Save $170
    The previous price was $1,698.00
  12. Pioneer - Diamante Essenza 1-Zone 23,000 BTU 17 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V/230V - White

    SKU: J3GWXSRWRY

    Product Description

    A high-efficiency white ductless mini split system with inverter technology, remote control, and washable filters.
    See all Ductless Mini Splits
    Your price for this item is $1,168.00
  13. Pioneer - Diamante Essenza 1-Zone 17,000 BTU 17 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V/230V - White

    SKU: J3GWXSRWRC

    Product Description

    A high-efficiency white ductless mini split heat pump offering quiet operation, inverter technology, and remote control.
    See all Ductless Mini Splits
    Your price for this item is $978.00
    Save $20
    The previous price was $998.00
  14. Pioneer - Quantum Ultra 24,000 BTU 2 Ton 20 SEER Floor/Ceiling Mini-Split Air Conditioner Heat Pump System Full Set

    SKU: J3GWXSRK9X

    Product Description

    A versatile ductless mini-split system offering efficient heating and cooling with remote control and smart home compatibility.
    See all Ductless Mini Splits
    Your price for this item is $2,233.00
  15. Pioneer - Diamante Pro Low-Ambient 1-Zone 12,000 BTU 20.5 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 110/120V - White

    SKU: J3GWXSRWQR

    Product Description

    A white ductless mini split heat pump offering 12,000 BTU, 20.5 SEER2 efficiency, and smart controls.
    See all Ductless Mini Splits
    Your price for this item is $928.00
  16. Pioneer - Diamante Pro Low-Ambient 1-Zone 9,000 BTU 19 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 110/120V - White

    SKU: J3GWXSRWQG

    Product Description

    A white ductless mini split heat pump offering efficient year-round climate control with smart features and remote.
    See all Ductless Mini Splits
    Your price for this item is $858.00
  17. Pioneer - Diamante Pro Low-Ambient 1-Zone 9,000 BTU 20 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V/230V - White

    SKU: J3GWXSRWQ4

    Product Description

    A white ductless mini split heat pump offering 9,000 BTU, 20 SEER2 efficiency, and smart climate control.
    See all Ductless Mini Splits
    Your price for this item is $868.00
  18. Pioneer - Quantum Ultra Low-Ambient 1-Zone 12,000 BTU 24 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V/230V - White

    SKU: J3GWXSRK33

    Product Description

    A white ductless mini split heat pump offering quiet, energy-efficient heating and cooling with Wi-Fi control.
    See all Ductless Mini Splits
    Your price for this item is $1,148.00
  19. Pioneer - Diamante Essenza 1-Zone 11,500 BTU 17 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V/230V - White

    SKU: J3GWXSRW6P

    Product Description

    A high-efficiency white ductless mini split system offering quiet heating and cooling with inverter technology.
    See all Ductless Mini Splits
    Your price for this item is $738.00
  20. Pioneer - Diamante Essenza 1-Zone 11,500 BTU 17 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 110/120V - White

    SKU: J3GWXSRW62

    Product Description

    A high-efficiency white ductless mini split system offering quiet heating and cooling with inverter technology.
    See all Ductless Mini Splits
    Your price for this item is $758.00
    Save $10
    The previous price was $768.00
  21. Pioneer - Quantum Ultra Low-Ambient 1-Zone 12,000 BTU 23 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 110/120V - White

    SKU: J3GWXSRKXF

    Product Description

    A white ductless mini split heat pump offering quiet, energy-efficient heating and cooling with Wi-Fi control.
    See all Ductless Mini Splits
    Your price for this item is $1,168.00
    Save $15
    The previous price was $1,183.00
  22. Pioneer - Quantum Ultra Low-Ambient 1-Zone 9,000 BTU 23 SEER2 Ductless Mini Split Inverter Heat Pump with 16 ft. Lines 208V/230V - White

    SKU: J3GWXSRKXH

    Product Description

    A white ductless mini split heat pump offering ultra-quiet, energy-efficient heating and cooling with Wi-Fi control.
    See all Ductless Mini Splits
    Your price for this item is $1,058.00
  23. Pioneer - Diamante Essenza 1-Zone 12,000 BTU 20 SEER2 Ductless Mini-Split Inverter Heat Pump with 16 ft. Lines 208/230V - White

    SKU: J3GWXSRZTJ

    Product Description

    A white ductless heat pump with inverter technology, 20 SEER2 efficiency, Energy Star certification, washable filters.
    See all Ductless Mini Splits
    Your price for this item is $838.00
  24. Pioneer - Diamante Essenza 1-Zone 18,000 BTU 20 SEER2 Ductless Mini-Split Inverter Heat Pump with 16 ft. Lines 208/230V - White

    SKU: J3GWXSRZTW

    Product Description

    An energy-efficient white ductless heat pump with 18,000 BTU, 20 SEER2, inverter operation, and washable filters.
    See all Ductless Mini Splits
    Your price for this item is $1,128.00

Mini split line sets connect the indoor air handler to the outdoor condenser of a ductless mini split system, providing the pathway for refrigerant to transfer heat between the two units. Typically made of copper tubing, a mini split refrigerant line set includes two lines with different diameters, with sizing determined by the equipment manufacturer. Choosing a compatible line set helps support reliable heating and cooling, whether your ductless system serves a bedroom, home office, garage or addition. Before selecting mini split copper tubing, check the system’s installation specifications for required pipe diameters, connection type, maximum line length and allowable elevation difference between indoor and outdoor units. A longer line set is not automatically a better fit: unnecessary tubing can complicate routing, and installations that exceed the system’s factory-charged length may require additional refrigerant according to the manufacturer’s instructions. Matching the refrigerant line set to your specific mini split model is more important than choosing by cooling capacity alone. Mini split line set insulation and routing also play important roles in protecting your installation and supporting efficient operation. Properly specified insulation helps limit unwanted heat transfer and reduce condensation on refrigerant tubing, while compatible outdoor line set covers help shield exposed runs from sunlight, weather and accidental damage for a more finished appearance. Depending on the product, a mini split installation kit may include insulated copper lines, connection fittings or other accessories, but a condensate drain hose, electrical wiring and protective covers are not necessarily included. Standard flare-connected line sets generally require careful connection, leak testing and evacuation before the system is placed into service, making qualified professional installation important. Some systems instead use manufacturer-approved, precharged quick-connect line sets designed for compatible equipment; these should not be assumed interchangeable with conventional tubing or other brands. Reviewing compatibility, insulation requirements and included components before purchasing a ductless mini split line set can help you avoid missing parts and prepare for a dependable heating and cooling setup.

FAQ

A mini split line set is a pair of refrigerant tubes that connects an indoor air-handling unit to an outdoor condenser. The tubes carry refrigerant between the two units as part of a ductless heating and cooling system.

A mini split line set typically includes two copper refrigerant tubes with insulation. Some kits also include connection fittings, communication wiring, a condensate drain hose, or wrapping tape. Package contents vary, so check the listed components.

Precharged line sets contain refrigerant and typically feature sealed connectors designed for compatible systems. Standard line sets do not come charged with refrigerant and generally require evacuation during installation before refrigerant is introduced.

No. A mini split line set carries refrigerant between the indoor and outdoor units, while a condensate drain line carries away water collected at the indoor unit during cooling or dehumidification. They serve separate roles, although they may follow the same installation route.

Yes. Mini split line set covers are channels that conceal exposed tubing along interior or exterior walls for a more finished appearance. Cover systems may include straight sections, elbows, and wall-entry fittings. Some are paintable, depending on the manufacturer's specifications.