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Description
Copper Insulated HVAC Line Set – 3/8" x 3/4" | 25ft, 35ft, 50ft | For MRCOOL HyperHeat, VersaPro, Universal & Pro-Direct | Professional InstallationCopper Insulated HVAC Line Set 3 8" x 3 4" (25 ft, 35 ft, 50 ft) Upgrade or replace your refrigerant lines with this premium copper insulated HVAC line set, designed for non DIY, traditional professional installation. This line set is perfect for central ducted heating and cooling systems that require reliable, field ready copper tubing. Liquid Line: 3 8" Suction Line: 3 4" Available Lengths: 25 ft, 35 ft, or 50 ft Compatible With MRCOOL & Other Major
Copper Insulated HVAC Line Set – 3/8" x 3/4" (25 ft, 35 ft, 50 ft)
Upgrade or replace your refrigerant lines with this premium copper insulated HVAC line set, designed for non-DIY, traditional professional installation. This line set is perfect for central ducted heating and cooling systems that require reliable, field-ready copper tubing.
- Liquid Line: 3/8"
- Suction Line: 3/4"
- Available Lengths: 25 ft, 35 ft, or 50 ft
Compatible With MRCOOL & Other Major HVAC Brands
This professional-grade line set can be used with:
- MRCOOL HyperHeat central ducted systems
- MRCOOL VersaPro central ducted systems
- MRCOOL Universal Series central ducted systems
- MRCOOL Pro-Direct central ducted systems
It is also compatible with any HVAC brand that uses 3/8" x 3/4" line sizes for central air conditioners and heat pumps.
Multi-Refrigerant Compatible
Built for flexibility in the field, this copper line set is suitable for use with:
- R410A
- R22
- R32
- R454B
Whether you're working with legacy equipment or installing a modern high-efficiency system, this line set is ready for the job.
Non-DIY, Professional Installation Required
These line sets are designed for traditional HVAC installation and are intended for use by licensed professionals only.
- Not flared from the factory
- Will need to be brazed or flared on-site depending on your specific installation requirements
- Always have a licensed HVAC technician handle installation and refrigerant charging
Key Features & Benefits
- High-quality copper insulated line set for central ducted HVAC systems
- Compatible with MRCOOL HyperHeat, VersaPro, Universal, and Pro-Direct
- Works with most major brands using 3/8" x 3/4" line sizes
- Supports multiple refrigerants: R410A, R22, R32, R454B
- Available in 25 ft, 35 ft, and 50 ft lengths for flexible installation
- Ideal for system replacements, upgrades, and new professional installs
Choose MRCOOL DIY Direct for your next installation and enjoy the confidence of buying from the USA's most trusted HVAC dealer.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 1074 reviews
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Product Reviews
★★★★★ 5
Amazing!!
Scent: Unscented, Size: 1.85 Fl Oz (Pack of 1), Scent: Unscented, Size: 1.85 Fl Oz (Pack of 1)
Amazing product! I have a hormone imbalance and am prone to ingrown hairs, pustules, and very coarse hair on my chin, jawline, and neck. Since using this product, my ingrown hairs have decreased significantly. It works well for me as someone with PCOS. It has a very comfortable scent, but it is very light. I don’t notice the smell after I rub it in. It really works and should consistently use.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
soft finish for upper lip and chin area
I pay close attention to fine facial hair, especially around my upper lip and chin area. Under strong lighting, those small hairs can appear more visible, so I have been looking for a gentle way to care for this area without anything harsh or overly complicated. At night, after cleansing my face and completing my basic skincare, I apply this oil as the final step. It feels like a light finishing layer over the skin. I use a very small amount, about one or two drops, warm it between my fingertips, then gently press it onto the upper lip and chin area. There is no stinging sensation, and the scent is very mild, which makes the application feel calm and comfortable. The texture feels lighter than expected. It spreads smoothly and settles quickly without leaving a heavy or greasy film. My skin type leans slightly combination, and in my case it sits well without making the T zone feel overly coated. Even when I follow with a light moisturizer, it layers without pilling and still feels breathable on the skin. After using it regularly every three days in the evening, the change I notice is mainly visual. The fine facial hair looks less pronounced under bright lighting, especially around the upper lip area. The skin surface also appears more even, and when I touch it, it feels smoother and less uneven in texture. These changes feel gradual rather than sudden, becoming more noticeable over time. From a makeup perspective in the morning, my base applies more evenly after cleansing. Foundation tends to sit more smoothly around the chin and upper lip area, without clinging to texture. During humid days, the skin can feel slightly more active in oil balance, but the overall finish still looks even and natural once makeup is applied.
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Good for maintaining clean beard lines
I keep my beard trimmed, but I always have to clean up the edges along my neckline to keep it looking neat. Lately, I've been massaging a few drops of this natural oil into my neck on Tuesday mornings right after I finish shaving at the sink. It feels really soothing on freshly shaved skin, kind of acting like a light daily moisturizer.
The bottle is only 1.85 ounces, but you only need a tiny dab to cover a small area so it should last a while. Over the last month, the stubble along my collar line definitely feels softer, and it takes an extra day or two before it starts looking messy again. If you trim your own facial hair and want to stretch out the time between touching up your neck or cheek lines, this is handy to keep by the mirror.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Gentle Oil for After Hair Removal Care
I started using this Cyperus oil after shaving because my skin often feels dry afterward. The texture is lightweight and spreads easily, so I only need a small amount on areas like legs and underarms. I usually apply it after showering, when my skin is clean and dry, then massage it in for a few minutes. The oil feels soothing and gives my skin a softer, more moisturized feeling without being too greasy. It absorbs better than I expected, especially when I use a thin layer. The scent is mild and does not bother me during daily use. For unwanted hair care, I know it is not something that shows a big change overnight, so I use it consistently after hair removal. It has been easy to add into my routine, and I like that it helps calm and moisturize my skin after shaving or waxing.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Skincare and Hair Care Experience with This Cyperus Rotundus Oil
This cyperus rotundus oil has a lightweight texture with good fluidity, it absorbs quickly when applied to the face, leaving no greasy or heavy feeling, even for combination-oily skin, I mainly use it for facial moisturizing and body care, after washing my face, I warm 2-3 drops in my palms and press it into my skin, and it doesn’t cause pilling when applying makeup afterward, leaving my skin soft and smooth, for hair care, after using it consistently for a month, the hair on my underarms and limbs has become finer, and the growth rate has slowed down significantly, so I don’t need to remove hair frequently, my skin also doesn’t get rough from frequent shaving, there’s no stinging or burning sensation during use, making it safe for sensitive skin, and the light aloe scent is fresh and pleasant, the dropper design is convenient, allowing precise dosage control to avoid waste, in addition to face and body, I also use it for scalp care, after washing my hair, I massage a few drops into my scalp, which relieves dryness and makes my hair smoother and shinier, overall, it delivers noticeable results for both skincare and hair care, with a comfortable user experience.
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Reviewed in the United States on April 10, 2026