Description
The HVAC365 3/8-inch x 7/8-inch copper line set is a 25-foot refrigerant piping assembly intended for compatible split air-conditioning installations. It provides two copper tube sizes used to create the refrigerant connection between an outdoor condenser and the corresponding indoor coil or air-handling equipment. This line set is intended for HVAC contractors, installers, and property owners whose equipment documentation specifically calls for 3/8-inch and 7/8-inch refrigerant piping.
The 25-foot length can accommodate installations where the indoor and outdoor system components are separated by a moderate distance. Buyers should measure the complete intended route rather than relying on the straight-line distance between the units. The measurement should account for bends, vertical sections, wall penetrations, connection points, equipment clearances, and any required service allowance.
Correct line sizing is essential for an HVAC system to operate as designed. Do not select this product based only on the air conditioner’s tonnage or brand. Connection sizes may vary between manufacturers, product families, efficiency levels, and individual model combinations.
Key Features
- 3/8-inch and 7/8-inch tubing sizes: Provides the two listed copper tube diameters for compatible air-conditioning equipment
- 25-foot line-set length: Supports installations requiring a moderate piping route between indoor and outdoor components
- Copper construction: Designed to create a refrigerant piping connection in a compatible split HVAC system
- Air-conditioner application: Listed for use with air-conditioning equipment requiring this exact tubing-size combination
- HVAC365 SKU HVLS3878-25: Identifies the specific 25-foot, 3/8-inch x 7/8-inch line-set configuration
- Approximately 15-pound listed weight: Provides a useful reference for shipping, handling, and installation planning
The copper tubing should be transported, uncoiled, and routed carefully. Improper handling can create kinks, flattened sections, contamination, or other damage that may prevent correct refrigerant flow or reliable connections. All open tube ends should remain protected from dirt and moisture until the installer is ready to make the final connections.
The line-set size, length, SKU, listed weight, and air-conditioner application are verified on the HVAC365 product page.
Compatibility and Installation Notes
This line set is not universally compatible with every air conditioner. Before ordering, confirm that the matched indoor and outdoor equipment specifies a 3/8-inch line and a 7/8-inch line. The equipment documentation should also be checked for maximum piping length, maximum vertical separation, approved connection method, and refrigerant-charge requirements.
The current HVAC365 listing does not specify whether the tube ends are factory flared, whether flare nuts or fittings are included, or whether insulation is supplied. Buyers should confirm these details before purchase and should not assume that additional installation materials are included.
The outdoor condenser’s factory refrigerant allowance must also be reviewed. A 25-foot installation may fall within the factory-charge allowance for some systems, while other models may require a calculated refrigerant adjustment. The proper procedure depends on the exact indoor and outdoor equipment combination.
Installation should be completed by a qualified HVAC professional. The work may include measuring and cutting tubing, preparing or brazing connections, applying required insulation, pressure testing with the specified test gas, evacuating the refrigerant circuit, checking for leaks, adjusting the refrigerant charge, and commissioning the system. All procedures must follow the equipment manufacturer’s instructions and applicable codes.
Frequently Asked Questions
What tubing sizes are included?
The line set includes 3/8-inch and 7/8-inch copper tubing.
What is the total length?
The listed line-set length is 25 feet.
Will it fit every split air conditioner?
No. Both pieces of equipment must specify these exact refrigerant-line sizes.
Is insulation included?
The current product listing does not confirm included insulation. Verify this detail before ordering.
Can the line set be shortened?
A qualified HVAC technician may shorten copper tubing when permitted by the equipment manufacturer and connection method.
Confirm the required tube sizes, connection method, installation length, and included materials before purchasing this HVAC365 copper line set.
