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Sitewide SALE: 100 OFF on select brands + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
Sitewide SALE: 100 OFF on select brands + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
MRCOOL DIY Coupler for 9K, 12K or 18K Air Handlers with 75 Ft. MC-5 Cable (DIYCOUPLER-1412K75C)

MRCOOL DIY Coupler for 9K, 12K or 18K Air Handlers with 75 Ft. MC-5 Cable (DIYCOUPLER-1412K75C)

by MRCOOL
SKU DIYCOUPLER-1412K75C
Save 14% Save 14%
$499.00
$499.00 - $499.00
$499.00
$427.00
$427.00 - $427.00
$427.00
  • Authorized online dealer
  • Transparent pricing. Any delivery cost is confirmed before processing*
  • Typical delivery 4 to 7 business days on standard shipments*
  • Price Match Guarantee. We beat verified prices
  • 30 day returns on eligible items
  • Manufacturer warranty included
  • No sales tax in most states*

Questions? Text or call +1 (307) 248-7227

*Exclusions apply. Freight, oversized items, made-to-order items, or remote delivery may require additional delivery time and cost confirmation. See Shipping and Returns.

Shipping confirmation required*
Price Match Guarantee at OffGrid Lux

At OffGrid Lux, we're committed to offering you the best prices online. That's why we have a Price Match Guarantee in place. If you find a lower price for the same product elsewhere, we'll match or beat it to ensure you get the best value.

For full details on our Price Match Guarantee, including eligibility criteria and how to request a price match, please click here to view our complete policy.

Shipping & Order Policy at OffGrid Lux

When you place an order, we confirm stock availability before charging your card. Orders typically process within 1-2 business days, and shipping is fast—most orders arrive within 4-7 days. We use reliable third-party carriers and provide tracking information promptly.

For more details, click here to view our full Shipping Policy.

Refunds & Returns at OffGrid Lux

We're committed to your happiness with every purchase. Need assistance? Just reach out. You have 30 days from delivery to return items in their original condition. We process refunds promptly, usually within 3 business days of receiving your return.

For more info, check out our full Returns & Refunds Policy here.

When one standard size DIY® QUICK CONNECT® LINE SET is not long enough, two standard QUICK CONNECT® LINE SETS can be combined using our DIY® COUPLER to increase the desired length of the QUICK CONNECT® LINE SETS.

Use this DIYCOUPLER if you have a 9K, 12K or 18K Air Handler. This also comes with 75ft of Communication Wire.

    Dimensions 11"W x 22.5"D x 4.5"H
    Unit Type Accessories
    Equipment Type Coupler
    Color Copper
    California Residents See Prop 65 WARNING
    Weight 6.39 lbs
    Freight Class 92.5
    Installation Manual


      Free Shipping & No Tax to the United States

      Enjoy Free Shipping on Orders Over $200. No Sales Tax (Excludes WY).

      in stock and ready to ship

      Shop High-Quality Items in Stock
      Get Free 30-Day Returns if Unsatisfied.

      Guaranteed Lowest Prices

      Rest assured, we offer the lowest prices available. Explore our Price Match Policy for unbeatable savings.

      Excellent Customer Service

      Questions? Give us a call +1(307) 248-722

      Let customers speak for us

      from 31 reviews

      Great communication and so far it’s great

      Tom Davison
      PECRON F3000LFP Portable Power Station 3600W 3072Wh
      PECRON F3000LFP Portable Power Station 3600W 3072Wh
      fast shipping

      fast shipping, great prices compared to other websites!!!

      Anonymous
      OffGrid Lux
      on the ball

      From day one when I ordered a eahora romeo 2 2025 off grid lux has been in constant contact . From shipping the bike to after care I haven't had issues at all . They even called me to check on an issue I had and I actually spoke to a person , who was great by the way . Customer service has fallen to the big internet conglomerates but I didn't feel that way with the purchase , they have really tried to take care of me and answered every question I've asked , even ones that are stated on the site . Im happy I went with them .I hope I can purchase other stuff in the future here .
      The products won't be flawless but their customer service is . Thanks again Greg

      greg decedue
      Eahora Romeo Pro II 2025 Ebike 52V Dual 2000W Motors 200 Miles
      Eahora Romeo Pro II 2025 Ebike 52V Dual 2000W Motors 200 Miles
      If you are professional or a weekend smoker

      If you are professional or a weekend smoker.this is a most have. One bit of advise learn the air

      Eric Lister
      OffGrid Lux
      Damaged upon arrival, stellar customer service

      Mototec Raider, paid for assembly, arrived with flat tire, dangling cracked headlight, scratched and scuffed. Customer service very responsive and able to resolve issues and make it right. They answer the phone and actually talk to you!
      Recommended!

      Edmund Siragusa
      OffGrid Lux
      Extra battery for Ecotric Leopard

      I bought an extra battery to increase my ebike range. Of all the sites I looked at, I was sure this one would fit my battery mount because it was labeled correctly. Not true of other sites. They shipped quickly and the battery was packed properly. Good business--would easily buy from this site again.

      Mitchell Stocker
      OffGrid Lux
      Received product in a timely

      Received product in a timely fashion

      Daniel Marck
      OffGrid Lux
      Amazing ribs

      Well built and easy to operate and clean. Effortless cooking and amazing pork ribs.

      Anonymous
      Old Country BBQ Pits Insulated Gravity Fed Charcoal Smoker GF-L-34X40
      Old Country BBQ Pits Insulated Gravity Fed Charcoal Smoker GF-L-34X40
      Excellent customer service

      The whole process from ordering through receipt with Off Grid Lux was seamless. They responded quickly to our initial questions and helped us decide on the best product to suit our needs. There was a small hiccup with the shipment delivery (the fault of the carrier) and Odd Grid Lux contacted the carrier immediately and had our issue resolved. We researched many vendors before deciding on Off Grid Lux and their pricing and customer service cannot be beat.

      J. Pierson
      Arkpax Ark Portable Power Station | 1500Wh | 1800W | IP67 Rated Water-Resistant and Dustproof
      Arkpax Ark Portable Power Station | 1500Wh | 1800W | IP67 Rated Water-Resistant and Dustproof

      Love it

      Curry
      MotoTec Raven 60v 30ah 2500w Lithium Electric Scooter
      MotoTec Raven 60v 30ah 2500w Lithium Electric Scooter
      Great company and was a little hesitant at first!

      Was a little nervous at first but Christian was GREAT. Company honored everything stated, customer service top notch and Fantastic communication. Need to give them a try to see how they can service and help you!

      Mike s.
      OffGrid Lux
      Venom

      This bike gave me a rush when I first rode it. Everything about it is completely unmatched. Drive one and you'll get a rush too.

      Pete Schoeffler
      MotoTec Venom 72V 12000W Electric Dirt Bike
      MotoTec Venom 72V 12000W Electric Dirt Bike
      Battery works and lasts a long time!

      I bought this battery to replace my battery that died in my Ecotric 20810 (the fat tire one from around 2019 timeframe). Went on a 2+ hour ride and still had plenty of juice to spare. Wish it was cheaper but....it's a big battery and that's the retail price I guess.

      Alex
      Ecotric 36V 12.5Ah Replacement Battery for Fat Tire & Folding Ebikes
      Ecotric 36V 12.5Ah Replacement Battery for Fat Tire & Folding Ebikes
      Awesome bike.

      Awesome bike. Was delivered on time. Bike was in good condition, no dings or dents. This website had the best price available.

      joey jennings
      MEELOD DK300 PRO 20" Retro Moped Style Electric Bike 1200W Peak Motor 48V 15Ah Dual Batteries
      MEELOD DK300 PRO 20" Retro Moped Style Electric Bike 1200W Peak Motor 48V 15Ah Dual Batteries
      Rockstar Customer Service

      Ordered four inverters for a customer whose solar system was damaged by a utility surge. OffGridLux advertised these inverters at $2500. Upon ordering the inverters I was assured they were in stock and would be delivered. The next day I received a refund and the price of the inverters went up from $2500 to $3100 on the OffGridLux website. Chris in customer service explained the inverters were a new product and the $2500 price was added by mistake and the real price was $3100. He also told me his warehouse made a mistake they only had 2 of the 4 available. After expressing my frustration at the situation since the customer was already quoted the lower price, Chris worked out a deal and gave us the inverters at cost to OffGridLux for $2850 instead of $3100. Chris promptly adjusted the charge and made sure the 2 inverters were shipped out asap. As a small business owner I understand how small mistakes can be costly and sometimes the little things are the biggest problem. In good fashion Chris represented OffGridLux and my interests by communicating and figuring out an amicable solution for all parties involved. Thank you again Chris. You sir a true asset to your company.

      Four Bird Energy
      OffGrid Lux

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