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Mini Split Line Set 3/8 x 5/8 Inch 25 Feet Insulated Copper 2 Ton
National HVAC Parts

Mini Split Line Set 3/8 x 5/8 Inch 25 Feet Insulated Copper 2 Ton

SKU: NHVAC-REFR-4DDUOY Brand: National HVAC Parts
$89.00 $120.15

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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Mini Split Line Set 3/8 x 5/8 Inch 25 Feet Insulated Copper 2 Ton

Pre-insulated copper line set for mini split air conditioner and heat pump installations. Includes 3/8" liquid line and 5/8" suction line with 25 feet of insulated copper — enough for most wall-mounted installations.

Key Features

  • 25 feet of pre-insulated copper tubing — ready to install
  • 3/8" thick closed-cell insulation prevents condensation and energy loss
  • Flared and ready for connection — no brazing required for mini splits
  • Works with all major mini split brands (Mitsubishi, Daikin, Fujitsu, MrCool, etc.)

Specifications

  • Material: Copper
  • Application: HVAC/R systems

What's Included

  • Mini Split Line Set 3/8 x 5/8 Inch 25 Feet Insulated Copper 2 Ton

Ships same-day from our Houston warehouse on orders placed before 3PM CST.

Frequently Asked Questions

What size line set do I need for my mini split?

Check your mini split's installation manual. Most 9,000-12,000 BTU units use 1/4" x 3/8". Larger 18,000-24,000 BTU units typically use 1/4" x 1/2" or 3/8" x 5/8".

Do I need to add refrigerant with a longer line set?

Most mini splits come pre-charged for up to 25 feet of line set. If your run exceeds the factory charge length, additional refrigerant must be added per the manufacturer's specification (usually 0.6 oz per extra foot).

Can I cut the line set shorter?

Yes, but you must re-flare the cut end using a proper flaring tool. Never use compression fittings on refrigerant lines.

Are the connections flared or do I need to braze?

Mini split line sets come pre-flared for flare nut connections — no brazing required. This makes DIY installation feasible for capable homeowners.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $75
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Refrigerant Line Sets & Fittings fit my National HVAC Parts Mini Split Line Set 3/8 x 5/8 Inch 25 Feet Insulated Copper 2 Ton?
Yes. This is the factory-specified OEM refrigerant line sets & fittings for the National HVAC Parts Mini Split Line Set 3/8 x 5/8 Inch 25 Feet Insulated Copper 2 Ton. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the refrigerant line sets & fittings on my National HVAC Parts Mini Split Line Set 3/8 x 5/8 Inch 25 Feet Insulated Copper 2 Ton?
Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.
What symptoms mean I need a new refrigerant line sets & fittings?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this refrigerant line sets & fittings compatible with Bryant or Payne too?
Many National HVAC Parts parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my National HVAC Parts refrigerant line sets & fittings?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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