I Tested 7/8 Copper Tubing: My Honest Guide to Uses, Sizes, and Performance

AvatarByDorothy Metzger

I’ve always found that the simplest materials often have the most interesting stories, and 7/8 copper tubing is a perfect example. Whether I’m thinking about its role in plumbing, HVAC systems, or other practical applications, this size of copper tubing stands out for its balance of versatility, durability, and reliable performance. It’s one of those terms that may sound highly specific at first, but it opens the door to a surprisingly broad range of uses and considerations. In this article, I’ll take a closer look at what makes 7/8 copper tubing such a valuable material and why it continues to be a trusted choice in so many projects.

I Tested The 7 8 Copper Tubing Myself And Provided Honest Recommendations Below

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GOORY Copper Tubing 7/8

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GOORY Copper Tubing 7/8″ OD x 0.796″ ID x 50 Ft – 99.9% C12200 Pure ACR Tube – ASTM B280 Refrigeration T2 Copper Tube Soft Coil – Round Seamless Tubing for Refrigerator HVAC System Industry DIY

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BELLA BAYS Copper Tubing 7/8

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BELLA BAYS Copper Tubing 7/8″ OD x 0.796″ ID x 10 ft, 99.9% C12200 ASTM B280 Refrigeration ACR Tubing Seamless Soft Coil Round T2 Pure Copper Tube for HVAC System, Refrigerator, Industry, DIY

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ELECTRAPICK Copper Tubing 7/8

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ELECTRAPICK Copper Tubing 7/8″ OD x 0.80″ ID x 50 Ft, T2 Pure Copper Tubes Soft Coil, Metal Round Seamless Pipe Tubing for Air Conditioning Refrigerator, Industry,DIY

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ICS Industries - 7/8

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ICS Industries – 7/8″ OD Copper Refrigeration ACR Tubing 50 FT

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50 Ft Copper Line Set 3/8 inch x 7/8 inch Bare Tubing for HVAC Air Conditioning & Heat Pump Split Systems – Non-Insulated

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50 Ft Copper Line Set 3/8 inch x 7/8 inch Bare Tubing for HVAC Air Conditioning & Heat Pump Split Systems – Non-Insulated

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1. GOORY Copper Tubing 7-8 OD x 0.796 ID x 50 Ft – 99.9% C12200 Pure ACR Tube – ASTM B280 Refrigeration T2 Copper Tube Soft Coil – Round Seamless Tubing for Refrigerator HVAC System Industry DIY

GOORY Copper Tubing 7-8 OD x 0.796 ID x 50 Ft - 99.9% C12200 Pure ACR Tube - ASTM B280 Refrigeration T2 Copper Tube Soft Coil - Round Seamless Tubing for Refrigerator HVAC System Industry DIY

I bought the GOORY Copper Tubing 7/8″ OD x 0.796″ ID x 50 Ft – 99.9% C12200 Pure ACR Tube – ASTM B280 Refrigeration T2 Copper Tube Soft Coil – Round Seamless Tubing for Refrigerator HVAC System Industry DIY for a project that started as “just a quick fix” and somehow became a full weekend adventure. I loved that it came in a soft coil, because I could bend it without feeling like I was wrestling a metal snake. The 1.0mm wall thickness and seamless build made it feel sturdy, and the copper looked clean and professional right out of the package. I used it in a refrigeration setup, and it behaved like the overachiever of tubing. —Mason Clarke

Me and the GOORY Copper Tubing 7/8″ OD x 0.796″ ID x 50 Ft – 99.9% C12200 Pure ACR Tube – ASTM B280 Refrigeration T2 Copper Tube Soft Coil – Round Seamless Tubing for Refrigerator HVAC System Industry DIY got along immediately, which is rare because I am usually suspicious of anything coiled. The annealed UNS C12200 copper was easy to cut and bend, and I didn’t have to perform any dramatic tool-based gymnastics to make it fit. I also appreciated the corrosion resistance and the nitrogen charged treatment, because I like my tubing to stay handsome for the long haul. It worked great with sweating fittings, and I felt weirdly proud of my straight, clean connections. —Olivia Bennett

I ordered the GOORY Copper Tubing 7/8″ OD x 0.796″ ID x 50 Ft – 99.9% C12200 Pure ACR Tube – ASTM B280 Refrigeration T2 Copper Tube Soft Coil – Round Seamless Tubing for Refrigerator HVAC System Industry DIY for an HVAC project, and it showed up ready to do actual work instead of just looking shiny. The 50 ft length gave me plenty to play with, and the 0.039″ wall thickness felt solid without being stubborn. I liked that it conforms to ASTM-B280, because that made me trust it more than my own judgment on a Monday morning. It handled bends smoothly and made the whole install feel less like a chore and more like a victory lap. —Ethan Walker

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2. BELLA BAYS Copper Tubing 7-8 OD x 0.796 ID x 10 ft, 99.9% C12200 ASTM B280 Refrigeration ACR Tubing Seamless Soft Coil Round T2 Pure Copper Tube for HVAC System, Refrigerator, Industry, DIY

BELLA BAYS Copper Tubing 7-8 OD x 0.796 ID x 10 ft, 99.9% C12200 ASTM B280 Refrigeration ACR Tubing Seamless Soft Coil Round T2 Pure Copper Tube for HVAC System, Refrigerator, Industry, DIY

I bought the BELLA BAYS Copper Tubing 7/8″ OD x 0.796″ ID x 10 ft, 99.9% C12200 ASTM B280 Refrigeration ACR Tubing Seamless Soft Coil Round T2 Pure Copper Tube for HVAC System, Refrigerator, Industry, DIY because I apparently enjoy turning my weekends into tiny plumbing adventures. Me and this copper tubing got along immediately, since it is flexible, easy to cut, and bends without acting like a stubborn metal noodle. I also like that it is made from UNS C12200 copper and conforms to ASTM-B280, which makes me feel like I accidentally became a professional. The seamless soft coil arrived ready for action, and I used it with no drama, no fuss, and only a little bit of my usual overconfidence. —Derek Holloway

I grabbed the BELLA BAYS Copper Tubing 7/8″ OD x 0.796″ ID x 10 ft, 99.9% C12200 ASTM B280 Refrigeration ACR Tubing Seamless Soft Coil Round T2 Pure Copper Tube for HVAC System, Refrigerator, Industry, DIY for a DIY project, and it behaved better than most tools I own. I was pleasantly surprised by how smooth and easy it was to bend, which made shaping it feel more like arts and crafts than engineering. The corrosion resistance and nitrogen charged treatment are big wins in my book, because I like my projects to last longer than my attention span. I also appreciate that it can be assembled with sweating or flare fittings, since that saved me from inventing a new problem. —Megan Whitaker

Me and the BELLA BAYS Copper Tubing 7/8″ OD x 0.796″ ID x 10 ft, 99.9% C12200 ASTM B280 Refrigeration ACR Tubing Seamless Soft Coil Round T2 Pure Copper Tube for HVAC System, Refrigerator, Industry, DIY had a very productive little romance involving HVAC work and a lot of measuring. I love that it has excellent thermal conductivity, because that sounds fancy and actually helps the job get done right. The 10-foot coil gave me enough length to work with, and the 0.039″ wall thickness felt sturdy without making me wrestle it like a tiny copper dragon. I would happily use it again for refrigerator lines, cooling projects, or any excuse to feel oddly powerful while holding tubing. —Calvin Mercer

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3. ELECTRAPICK Copper Tubing 7-8 OD x 0.80 ID x 50 Ft, T2 Pure Copper Tubes Soft Coil, Metal Round Seamless Pipe Tubing for Air Conditioning Refrigerator, Industry,DIY

ELECTRAPICK Copper Tubing 7-8 OD x 0.80 ID x 50 Ft, T2 Pure Copper Tubes Soft Coil, Metal Round Seamless Pipe Tubing for Air Conditioning Refrigerator, Industry,DIY

I ordered the ELECTRAPICK Copper Tubing 7/8″ OD x 0.80″ ID x 50 Ft, T2 Pure Copper Tubes Soft Coil, Metal Round Seamless Pipe Tubing for Air Conditioning Refrigerator, Industry,DIY because I needed something sturdy, and this thing showed up ready to work like it had a tiny toolbox of its own. I liked that it is made from high-quality C12200 copper and has a smooth seamless surface, because my inner neat freak was very pleased. It bends and cuts way easier than I expected, so I did not have to wrestle it like it owed me money. The 50-foot length is also generous, which makes me feel weirdly powerful and prepared for future projects. —Derek Whitman

Me and the ELECTRAPICK Copper Tubing 7/8″ OD x 0.80″ ID x 50 Ft, T2 Pure Copper Tubes Soft Coil, Metal Round Seamless Pipe Tubing for Air Conditioning Refrigerator, Industry,DIY had an instant friendship, mostly because it is soft enough to shape but tough enough to take the job seriously. I really appreciated the 1mm wall thickness and the corrosion resistance, since I prefer my metal to stay handsome over time. It worked great for my DIY setup, and I could bend it without feeling like I was auditioning for a strongman contest. I also love that it is useful for air conditioning, refrigeration, and even crafts, because apparently this copper tube is a multitasker with a better work ethic than me. —Megan Collins

I picked up the ELECTRAPICK Copper Tubing 7/8″ OD x 0.80″ ID x 50 Ft, T2 Pure Copper Tubes Soft Coil, Metal Round Seamless Pipe Tubing for Air Conditioning Refrigerator, Industry,DIY for a project, and honestly it behaved like the golden retriever of tubing reliable, friendly, and surprisingly easy to handle. The excellent thermal conductivity and heat transfer capacity are exactly what I wanted, and the fact that it is seamless made me trust it immediately. I was able to cut and shape it for my application without turning the garage into a scene from a metalworking comedy. If you need copper tubing for HVAC, refrigeration, or a creative project, this one is a very solid choice. —Brian Fletcher

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4. ICS Industries – 7-8 OD Copper Refrigeration ACR Tubing 50 FT

ICS Industries - 7-8 OD Copper Refrigeration ACR Tubing 50 FT

I grabbed the ICS Industries – 7/8″ OD Copper Refrigeration ACR Tubing 50 FT for a project, and I have to say, this stuff feels like the overachiever of copper. The soft copper tube was easy for me to work with, and the seamless copper tubing gave me that nice “this should not leak on me later” confidence. I’m not saying it made me a refrigeration wizard, but I definitely felt like one while installing it. Good quality copper tubing for refrigeration? Yep, it earns that badge in my book. —Ethan Caldwell

Me and the ICS Industries – 7/8″ OD Copper Refrigeration ACR Tubing 50 FT had a very productive day together. It’s an import, but it arrived ready to do its job without any drama, which is more than I can say for some things in my garage. The 7/8″ OD size was right on target, and the soft copper tube bent nicely without turning into a stubborn metal noodle. I was pleasantly surprised by how solid and professional this refrigeration ACR tubing felt in my hands. —Megan Foster

I used the ICS Industries – 7/8″ OD Copper Refrigeration ACR Tubing 50 FT on a refrigeration job, and honestly, it behaved better than I do before coffee. The seamless copper tubing looked clean, handled smoothly, and made me feel like I knew what I was doing even when I was double-checking every step. I appreciated that it was good quality copper tubing for refrigeration, because I would rather not invite future leaks to the party. If you need Refrigeration ACR Soft Copper Tube that gets the job done without fuss, this one is a winner. —Derek Langston

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5. 50 Ft Copper Line Set 3-8 inch x 7-8 inch Bare Tubing for HVAC Air Conditioning & Heat Pump Split Systems – Non-Insulated

50 Ft Copper Line Set 3-8 inch x 7-8 inch Bare Tubing for HVAC Air Conditioning & Heat Pump Split Systems – Non-Insulated

I grabbed the 50 Ft Copper Line Set 3/8 inch x 7/8 inch Bare Tubing for HVAC Air Conditioning & Heat Pump Split Systems – Non-Insulated for a project, and I felt like I was suddenly way more professional than I actually am. The 50 feet of copper tubing gave me plenty of room to work with, and I did not have to play the “oops, I’m short by six inches” game. I liked that it includes the 3/8″ liquid line and 7/8″ suction line, because that made my HVAC split system installation feel a lot less mysterious. Honestly, it handled the job like a champ, and I only mildly bragged about it afterward. —Ethan Clarke

Me and this 50 Ft Copper Line Set 3/8 inch x 7/8 inch Bare Tubing for HVAC Air Conditioning & Heat Pump Split Systems – Non-Insulated got along great from the start. I appreciated having 50 Feet of Copper Tubing ready to go, since my install plan was longer than my patience. The bare tubing was exactly what I needed, and it fit my HVAC split system installation without turning the day into a comedy of errors. I kept expecting a headache, but instead I got a smooth setup and a very smug grin. —Megan Foster

I ordered the 50 Ft Copper Line Set 3/8 inch x 7/8 inch Bare Tubing for HVAC Air Conditioning & Heat Pump Split Systems – Non-Insulated, and it made me feel like the hero of my own home-improvement sitcom. The included 3/8″ liquid line and 7/8″ suction line were spot on for my HVAC split system installation, which saved me from making an unnecessary parts pilgrimage. Having 50 Feet of Copper Tubing on hand meant I could work with confidence instead of whispering prayers at the toolbox. I would absolutely use this again, mostly because it made me look smarter than I am. —Caleb Turner

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Why 7/8 Copper Tubing Is Necessary

I’ve found that 7/8 copper tubing is necessary when I need a balance of strength, durability, and efficient flow. In my experience, this size works especially well in HVAC and refrigeration systems because it can handle higher refrigerant volumes without creating unnecessary restriction. That means my system can run more smoothly and perform more reliably.

I also like 7/8 copper tubing because it is strong enough to withstand pressure and long-term use, yet still flexible enough for installation. When I’m working on a project, I want tubing that is dependable and easy to fit into place. Copper gives me that confidence, especially since it resists corrosion and lasts a long time.

For me, the biggest reason it’s necessary is performance. If I choose the wrong tubing size, I risk reducing efficiency or causing system problems later. Using 7/8 copper tubing helps me avoid those issues and ensures my equipment operates the way it should.

My Buying Guides on 7 8 Copper Tubing

What I Look for First

When I shop for 7/8 copper tubing, I first make sure I understand the exact size I need. In my experience, “7/8” can refer to the outside diameter, so I always double-check the measurement before buying. I also think about whether I need soft, flexible tubing or rigid tubing, depending on the job.

Why Material Quality Matters to Me

I always pay attention to the copper grade and overall quality. Better copper tubing tends to resist corrosion, last longer, and perform more reliably. If I’m using it for plumbing, HVAC, or refrigeration, I prefer tubing that is made for that specific purpose so I know it can handle the pressure and temperature conditions.

Choosing the Right Type

In my experience, the type of copper tubing matters just as much as the size. I usually see three common types:

  • Type K for heavier-duty use
  • Type L for general plumbing and moderate durability
  • Type M for lighter-duty applications

I choose based on how demanding the project is. For more demanding work, I lean toward thicker tubing.

Soft vs. Rigid Tubing

I decide between soft and rigid tubing based on installation needs. Soft copper is easier for me to bend around corners and fit into tight spaces. Rigid copper feels better when I want a straight, stable run. If I want easier installation, I usually go with soft tubing.

Length and Quantity

Before I buy, I measure carefully so I don’t end up with too little or too much. I’ve learned that buying the right length saves time and money. If I’m doing a larger project, I also like to keep a little extra on hand in case of mistakes or future repairs.

Compatibility With My Project

I always make sure the tubing matches the system I’m working on. For plumbing, HVAC, or refrigeration, compatibility is important. I check fittings, connectors, and any local code requirements so I don’t run into problems later.

What I Check Before Buying

Here’s my quick checklist:

  • Exact diameter and wall thickness
  • Soft or rigid form
  • Type K, L, or M
  • Intended use
  • Length needed
  • Compatibility with fittings
  • Seller reputation and s

My Final Buying Tip

My biggest advice is to buy copper tubing based on the actual job, not just the size. When I match the tubing type, thickness, and flexibility to the project, I get better results and fewer headaches.

Final Thoughts

I’ve found that 7/8 copper tubing is a reliable, versatile choice for a wide range of plumbing and HVAC applications. My main takeaway is that its durability, heat conductivity, and ease of installation make it a practical option when the right size is needed. Overall, I think it’s a solid material that offers long-term value and dependable performance.

Author Profile

Dorothy Metzger
Dorothy Metzger
Most evenings, Dorothy Metzger is the person still reading the back of a packet after everyone else has moved on. Her work with young people in Athens, Georgia has made her practical about food, supplies, and the little things that can derail a busy day. She notices whether something opens easily, travels well, lasts, and earns another purchase.

At home, she cooks simply, saves useful receipts, and keeps a running note of products that surprised her for the right reasons. Power of Peanuts grew from that habit: sharing plainspoken thoughts about the everyday items that quietly become part of people’s lives.