MRCOOL - 25ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B

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MRCOOL - 25ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B

Name: MRCOOL - 25ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B
Brand: MRCOOL
SKU: DIY25-1438-O
Price: 264.0 USD
Availability: InStock

by MRCOOL

SKU DIY25-1438-O

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$264.00

Quantity

The MRCOOL DIY25-1438-O is a 25-foot pre-charged line set engineered for easy installation with MRCOOL DIY 6K, 9K, and 12K indoor units that utilize R-454B refrigerant. This lineset offers an efficient, mess-free solution for both homeowners and professionals who want a clean and secure HVAC connection without the need for vacuum pumps or refrigerant handling.

Equipped with Quick Connect fittings, this lineset simplifies the installation process by providing a tight, reliable seal—eliminating the need for special tools. The pre-charged refrigerant lines and durable insulation deliver excellent performance and energy efficiency in a wide range of settings.

Key Features:

Length: 25 feet of pre-charged copper tubing
Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
Refrigerant: Pre-charged with eco-friendly R-454B refrigerant
Compatibility: Works with MRCOOL DIY 6K, 9K, and 12K indoor units
Connection Type: Quick Connect fittings for tool-free installation
Insulation: High-quality insulation for optimized thermal performance and protection
Construction: Built with corrosion-resistant materials for long-term durability

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Questions? Give us a call today at (807) 606-9202

Let customers speak for us

from 2326 reviews

Super responsive - great pricing - easy!!! No

Super responsive - great pricing - easy!!! No brainer!

Ray

Klondike AC & Heating

06/18/2026

Great experience.

Excellent pricing, fast shipping, great communication. I highly recommend Klondike AC

Bob Warne

Klondike AC & Heating

04/19/2026

This unit is great!

This unit is great. Arrived in very heavy packaging upon a pallet. Everything intact. Setup was straight forward. Love the easy to use app.Unit came right up without any problems. Very happy and highly recommend.

Bob Warne

MRCOOL - DIY 5th Generation Easy Pro - 1.5 Ton / 18,000 BTU Ductless Mini Split Air Conditioner & Heat Pump - 20 SEER2 - R454B - 230V

04/19/2026

Bricks arrived very well packed

Bricks arrived very well packed, so all went well, after a lengthy delay from backorder at distributor warehouse. Follow up from Klondike was reassuring. Good customer service.

Anonymous

Drolet - 4" x 8" x 1 1/4" Refractory Brick 9 Units

11/14/2025

Very efficient and surprisingly quiet

Our installer said it was well-designed. We’re very satisfied with the results.

Michael Johnson

Goodman - 3.0 Tons/36,000 BTU Air Conditioner Condenser- SEER2 17.2 - Two Stage - 208V

09/08/2025

Reliable performance and great customer care

This product is exactly what we needed. Efficient, durable, and worth the price.

Samuel Kim

Goodman - 2.5 Ton/30,000 BTU Air Conditioner Condenser - SEER2 15.2 - Single Stage - R32

09/05/2025

Great value for money and easy to maintain

Very happy with this unit. Noticed an immediate difference in cooling and lower energy bills.

Grace Williams

Goodman - 4 Ton/48,000 BTU Air Conditioner Condenser - SEER2 13.4 - Single Stage - R32

09/02/2025

Quiet Operation, Great Comfort

Very happy with this purchase. The team at Klondike AC made the process simple and stress-free.

Matthew Moreno

Goodman - 4 Ton/60,000 BTU Gas Packaged Unit - 13.4 SEER2 - Single Stage - R32 - 230V

08/30/2025

Smooth Installation Experience

Super smooth experience from start to finish. Josh answered all our questions and made sure delivery was easy.

Edward Wilkins

Daikin - 5 Ton/58,000 BTU Commercial Packaged Heat Pump - 13.4 SEER2 - Single Stage - 208/230V - R32

08/30/2025

Energy Bills Already Lower

This unit has been excellent. Runs quietly and keeps our home comfortable. Huge thanks to Maggie at Klondike AC.

Krista Johnson

Goodman - 2.5 Tons/40000 BTU Packaged Gas/Electric Central Air System - SEER2 13.4 - Single Stage - 208V

08/30/2025

Josh Helped Us Pick the Right Model

Energy bills already dropped since installing this unit. It’s efficient and reliable. Thank you Klondike AC.

Anne Smith

Daikin - 7.5 Ton/86,000 BTU Packaged AC - SEER 14 - Single Stage - 208V

08/30/2025

Impressed with the Quality

The Klondike AC team impressed us with great service. Installation was straightforward and performance is better than expected.

Melissa Hart

Daikin - 20 Ton/230,000 BTU Packaged AC - SEER 14 - Single Stage - 208V

08/30/2025

Cools and Heats Better Than Expected

Super smooth experience from start to finish. Josh answered all our questions and made sure delivery was easy.

Kelly Foley

Daikin - 6 Ton/69,000 BTU Light Commercial Packaged Air Conditioner - 13.4 SEER2 - Single Stage - 460V - R32

08/29/2025

Perfect Size for Our Office

The Klondike AC team impressed us with great service. Installation was straightforward and performance is better than expected.

Keith Ray

Daikin - 10 Ton/116,000 BTU Commercial Packaged Air Conditioner - 14 EER - Single Stage - 460V - R32

08/29/2025

Energy Bills Already Lower

Very happy with this purchase. The team at Klondike AC made the process simple and stress-free.

Andrea Baker

Goodman - 2.0 Tons/40,000 BTU Ultra Low NOx Packaged Gas/Electric Central Air System - SEER2 13.4 - Single Stage - 208V

08/28/2025

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2323

I had a great experience working with Maggie’s team. They helped me choose the right multi-zone HVAC system for my cottage and took the time to explain the different options without any pressure. Their product knowledge was excellent, the wholesale pricing was very competitive, and the entire process was smooth from start to finish. It’s refreshing to deal with a knowledgeable and honest team that genuinely wants to help you find the right solution. Highly recommend Klondike AC & Heating for anyone looking for quality HVAC equipment and great service!

Purchased a brand new A/C unit paid in full. This is an extremely important unit that I needed to replace in my small business before a heat wave came and destroyed all my product. 3 days after my order I’m expecting a tracking number in my email but instead they decided to cancel my order because it was not in stock. Do not be fooled by the low price, the products offered on their site are not in stock. The heat wave came and I lost everything I will likely never recover from this. I’m very disappointed with this if I had known that orders are not guaranteed I would’ve just paid for a unit locally and not lost my small business. I was supporting my family with that.

Amazing experience with Klondike AC! Huge thank you to Josh for all their help with selecting the perfect fireplace and walking us through the venting options. They were incredibly knowledgeable, patient, and made the whole process easy and stress-free.

You can really tell they care about getting the right solution, not just making a sale. Highly recommend Klondike AC & Hearing to anyone looking for quality products and excellent customer service. We couldn’t be happier with our choice!

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MRCOOL - 25ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B

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MRCOOL - 25ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B

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