When it comes to extending or installing ductless mini split air conditioners and heat pump systems, selecting the right 100 ft mini split line set is crucial for performance and durability. These line sets include copper tubing and insulation designed to prevent leaks, corrosion, and energy loss. Below is a summary table featuring top mini split line sets suited for American HVAC systems.
Product | Brand | Copper Size (OD) | Insulation | Length |
---|---|---|---|---|
Air Conditioning Copper Tubing Pipe Extension Set | TADERUILY | 1/4″ & 3/8″ | PE Thickened Insulated Coil | 100 Ft |
ICOOL 50 Ft Mini Split Line Set | ICOOL | 1/4″ & 1/2″ | 3/8″ Thickened PE Insulated | 50 Ft |
HANSUM Mini Split Line Set 100FT | HANSUM | 3/8″ & 5/8″ | Triple-Layer Insulated Cotton | 100 Ft |
HANSUM 50 Ft Mini Split Line Set | HANSUM | 1/4″ & 3/8″ | Triple-Layer Insulated Cotton | 50 Ft |
NEAGLORY 25 Ft Mini Split Line Set | NEAGLORY | 1/4″ & 3/8″ | 3/8″ Thickened Flame Retardant Insulated | 25 Ft |
TADERUILY 100 Ft Copper Tubing Pipe Extension Set

The TADERUILY 100 Ft Copper Tubing Extension Set includes twin copper tubes with 1/4″ and 3/8″ outer diameters, designed specifically for mini split AC and heating equipment. It features a thickened polyethylene (PE) insulated coil ensuring durability and enhanced thermal insulation.
This line set holds up well under both high and low pressure conditions, showing no leaks and providing high reliability for ductless mini split air conditioners and heat pumps. The full 100-foot length makes it suitable for large installations or long-distance connections.
ICOOL 50 Ft Mini Split Line Set with Thickened PE Insulation

The ICOOL 50 Ft Line Set boasts high-quality seamless copper tubing tested according to ASTM B743 standards. With wall thicknesses ranging from 0.65mm to 0.7mm depending on pipe size (1/4″, 3/8″, and 1/2″), it ensures durability against leaks and corrosion.
The set is protected by a three-layer insulation system consisting of embossed polyethylene film, climate-resistant foam, and thick insulation cotton which is flame retardant, fireproof, and waterproof. Its wide thermal tolerance between -40℉ and 248℉ guarantees performance under extreme climates and refrigerants in various HVAC applications.
HANSUM 100 FT Mini Split Line Set with Triple-Layer Insulation

The HANSUM 100 FT Mini Split Line Set features twin copper tubes sized 3/8″ and 5/8″ OD, making it suitable for larger systems requiring heavier refrigerant flow. The triple-layer insulation combines embossed polyethylene film, weather-resistant foam, and thickening insulating cotton, enhancing protection against thermal loss and physical damage.
Its flared pipe ends and anti-cracking nuts ensure leak-free installation and durability. Protective caps further protect fittings during transit and setup, making this line set a reliable choice for comprehensive mini split air conditioning or heat pump applications.
HANSUM 50 Ft Mini Split Line Set with Thickened Insulation

This HANSUM 50 Ft Mini Split Line Set provides an option for moderate distance installations with 1/4″ and 3/8″ copper tubing sizes. Similar to the 100 Ft model, it employs triple-layer insulation for optimal temperature stability and structural durability.
Its well-flared pipes and thickened, anti-cracking nuts support leak-proof, long-lasting fitting connections. The set is suitable for ductless mini splits and heat pumps, guaranteeing reliable refrigerant flow and strong insulation for efficient HVAC operation.
NEAGLORY 25 Ft Mini Split Line Set with Flame Retardant Insulation

The NEAGLORY 25 Ft Mini Split Line Set is crafted from thickened copper tubing that combines excellent toughness, corrosion resistance, and thermal conductivity. It includes twin pipes with 1/4″ and 3/8″ outer diameters tailored for mini split ACs and heat pumps.
The insulation comprises 3/8 inch thickened cotton with embossed flame-retardant polyester, enhancing fire resistance, waterproofing, and sound absorption. Its wide operating temperature range of -40℉ to 248℉ and compatibility with diverse refrigerants make it a versatile choice for smaller or mid-sized HVAC setups.
Buying Guide For Mini Split Line Sets
Choosing the best mini split line set requires considering multiple factors to optimize HVAC performance and longevity:
Copper Pipe Size
Typical line sets come with twin copper pipes of either 1/4″ & 3/8″, 1/4″ & 1/2″, or larger diameters like 3/8″ & 5/8″. The size depends on the BTU capacity of your mini split system. Larger pipes allow for higher refrigerant flow, essential for bigger units.
Insulation Quality
Insulation protects the lines from thermal loss and condensation. Look for thick, multi-layer insulation such as polyethylene foam with extra thickened cotton or flame-retardant materials. Good insulation reduces energy consumption and prevents pipe sweating.
Length and Extension
While the standard line set lengths range from 25 ft to 100 ft, ensure you select a length that fits your installation without excessive pipe bending or extension. Overly long lines may cause refrigerant drop and system inefficiency.
Durability and Leak Resistance
High-quality, seamless copper pipes tested under high pressure help prevent leaks. Flared end fittings with thickened, anti-cracking nuts ensure tight connections. Protective caps during shipping and installation safeguard pipe ends.
Compatibility With Refrigerants and Systems
Confirm your line set supports the refrigerant type used (commonly R410A or R32) and fits the mini split brand and model. Check specifications for temperature tolerance and flame retardancy.
Installation Convenience
Pre-flared ends with included nuts simplify installation, particularly for DIY or professional HVAC technicians. Lightweight and flexible tubing is easier to route through walls or outdoor routes.
By considering copper tube diameter, insulation, length, durability, and compatibility, you can select a mini split line set that ensures efficient and reliable performance for your HVAC needs.