Finding reliable 3/8 inch copper tubing is essential for HVAC, refrigeration, and DIY projects. The following selections represent high-quality, seamless copper tubes with 3/8″ outer diameter (OD) and 0.328″ ID or close variants, designed for durability, corrosion resistance, and efficient thermal performance. These coils are suitable for refrigerant systems, condensers, and general piping where flexibility and reliability matter. Each product is evaluated for material quality, adherence to ASTM-B280, and practical handling in real-world applications.
| Product | Length | OD x ID | |
|---|---|---|---|
| GOORY Copper Tubing 50 Ft | 50 ft | 3/8″ x 0.328″ | |
| GOORY Copper Tubing 25 Ft | 25 ft | 3/8″ x 0.328″ | |
| BELLA BAYS Copper Tubing 5 Ft | 5 ft | 3/8″ x 0.320″ | |
| YullSorom Copper Tubing 10 Ft | 10 ft | 3/8″ x 0.328″ | |
| ELECTRAPICK Copper Tubing 25 Ft | 25 ft | 3/8″ x 21/64″ (≈0.328″ ID) |
GOORY Copper Tubing 50 Ft – 3/8″ OD X 0.328″ ID
Product overview: This 50-foot coil uses 99.9% C12200 pure copper (UNS C12200), conforming to ASTM B280 for refrigerant systems. It is seamless and annealed for easy bending and installation in HVAC or refrigeration setups. The wall thickness and diameter support robust heat transfer and reliable performance under typical refrigerant pressures. Nitrogen charged treatment helps reduce oxidation and maintain purity, contributing to longer system life and resistance to corrosion.
Key features include a 3/8″ OD with a 0.328″ ID, a 0.024″ wall thickness, and a flexible coil form factor. The nitrogen treatment helps minimize impurities and condensation challenges, making it a strong option for DIYers and professionals alike who need dependable refrigerant tubing across longer runs.
GOORY Copper Tubing 25 Ft – 3/8″ OD X 0.328″ ID
Product overview: Similar to the 50 ft variant, this 25-foot coil uses 99.9% C12200 copper with ASTM-B280 compliance. It is seamless and coil-wrapped for convenient installation in constrained spaces. The nitrogen charged treatment supports longer life by reducing oxidation and managing condensation, enhancing durability in air conditioning, refrigeration, and other cooling applications.
BELLA BAYS Copper Tubing 5 Ft – 3/8″ OD x 0.320″ ID
Product overview: This 5-foot coil uses annealed UNS C12200 copper, optimized for flexible handling and easy installation. It adheres to ASTM-B280 and offers good thermal conductivity, corrosion resistance, and durability. The slightly smaller ID compared to the 3/8″ standard helps in tight-fitting installations where a snug fit is necessary. Nitrogen charging contributes to extended service life by reducing oxidation and keeping impurities in check.
YullSorom Copper Tubing 10 Ft – 3/8″ OD x 0.328″ ID
Product overview: This 10-foot copper tube is 3/8″ OD with a 0.328″ ID and a 1/32″ wall thickness. It is a seamless coil designed for refrigeration and HVAC projects. The tube is manufactured from premium copper with smooth, seam-free surfaces that facilitate easy bending and cutting. As with other GOORY and related products, nitrogen charged treatment is intended to help prevent oxidation and condensation, extending the tubing’s useful life in varied operating conditions.
ELECTRAPICK Copper Tubing 25 Ft – 3/8″ OD x 21/64″ ID
Product overview: Sized at 25 feet, this tube features 3/8″ OD with an ID around 21/64″ (approximately 0.328″). It uses high-quality C12200 copper and adheres to ASTM-B280. The seamless construction reduces potential leak points, and the nitrogen charged treatment supports longer life by reducing oxidation and impurities, making it suitable for refrigeration and air conditioning work where durability and reliability are essential.
Buying Guide: Copper Tubing For HVAC And Refrigeration
- Material and grade: Look for UNS C12200 copper with ASTM-B280 compliance for reliable refrigeration and HVAC performance. Copper purity affects thermal conductivity and longevity in condensers, coils, and piping.
- Dimensions: The 3/8″ OD is common for many systems; confirm ID (around 0.328″) and wall thickness to ensure compatibility with fittings, manifolds, and existing lines.
- Seamless construction: Seamless tubes provide fewer weak points and better pressure handling, important for refrigerant systems and compressor-fed lines.
- Nitrogen charged treatment: This helps prevent oxidation, reduce impurities, and manage condensation, contributing to longer service life and reduced maintenance.
- Flexibility and bend radius: For DIY projects or confined spaces, coils that bend easily without kinking are advantageous. Annealed copper improves formability.
- Coil length options: Shorter coils (5–25 ft) are easier to handle in tight spaces; longer coils (50 ft) reduce the need for splices in larger installations.
- Is it suitable for your application?: Applications include air conditioning lines, refrigeration coils, and general HVAC runs. Ensure compatibility with the refrigerant type and pressure ratings in your system.
- Installation considerations: Tools for cutting and flaring should be compatible with 3/8″ copper tubing; choose products with smooth surfaces for easier flaring and connections.
- Maintenance and lifespan: Regular inspection for oxidation or condensation buildup helps sustain efficiency; nitrogen-treated copper tends to resist degradation longer under typical HVAC conditions.
- Cost vs. value: Compare coil length, wall thickness, and packaging (seamless coil vs. cut lengths) to determine the best value per project.