SKU: 92559907038

MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Condenser 230V, DIY-MULTI3-18HP230D-O

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Description

MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Condenser 230V, DIY-MULTI3-18HP230D-OMRCOOL DIY 5th Gen 3 Zone Multi Zone Mini Split Condenser Model: DIY MULTI3 18HP230D O Introducing the all new 5th Generation MRCOOL DIY Multi Zone Mini Split Condenser, engineered for maximum comfort, efficiency, and convenience. With the ability to cool and heat multiple zones independently, this system is ideal for small homes, apartments, home offices, or workshops. Thanks to its DIY Quick Connect pre charged line sets and intuitive design, you

MRCOOL® DIY 5th Gen 3-Zone Multi-Zone Mini Split Condenser

Model: DIY-MULTI3-18HP230D-O

Introducing the all-new 5th Generation MRCOOL® DIY® Multi-Zone Mini Split Condenser, engineered for maximum comfort, efficiency, and convenience. With the ability to cool and heat multiple zones independently, this system is ideal for small homes, apartments, home offices, or workshops. Thanks to its DIY® Quick Connect® pre-charged line sets and intuitive design, you can install it yourself without the need for special tools or HVAC certification.

Key Features

  • DIY Installation: Tool-free, vacuum-free setup with no prior experience required
  • DIY® Quick Connect® Line Sets: Pre-charged with environmentally friendly R-454B refrigerant
  • Smart HVAC Control: Control each zone via the MRCOOL® SmartHVAC® app, Amazon Alexa, or Google Assistant
  • DIYPRO® Cable: Durable armored cable eliminates the need for electrical conduit
  • Gold Fin® Condenser: Corrosion-resistant coating ideal for coastal environments
  • Industry-Leading Warranty: 7-Year compressor, 5-Year parts, and Limited Lifetime Replacement Warranty with registration in the MRCOOL® Care Program
  • Certified Quality: Intertek listed 5031495 for tested safety and performance

Air Handler Compatibility

This condenser supports up to three indoor air handlers with a maximum combined capacity of 24,000 BTU. Available air handler sizes: 6K, 9K, and 12K BTU.

Examples of Compatible Combinations:

  • 6K + 6K + 12K (24,000 BTU)
  • 6K + 9K + 9K (24,000 BTU)
  • 6K + 6K + 9K (21,000 BTU)
  • 6K + 9K + 6K (21,000 BTU)
  • 9K + 9K (18,000 BTU – one port unused)
  • 6K + 12K (18,000 BTU – one port unused)

Recommended Wire Sizing

  • Recommended: 12 AWG copper wire – safe for 18A minimum circuit ampacity
  • One Size Smaller (14 AWG): Not recommended – may overheat under full load and violate electrical code
  • One Size Larger (10 AWG): Offers lower voltage drop and extra safety margin

Ideal Coverage Area

Perfect for spaces ranging from 750 to 1,100 sq. ft., depending on your climate zone and insulation quality.

Note: Always verify system configuration before purchasing. Specifications may change during production. Images may be representative only.

Buy from MRCOOL DIY Direct — the USA’s most trusted HVAC dealer for do-it-yourself heating and cooling solutions.

Specifications & Dimensions

Specification Details
Model Number DIY-MULTI3-18HP230D-O
Cooling Capacity 18,000 BTU/h
Heating Capacity 19,000 BTU/h
Recommended Coverage Area 750 – 1,100 sq. ft.
SEER2 20.5
EER2 11.5
HSPF2-4 10.3
HSPF2-5 8.5
Power Supply 208-230V, 60Hz, 1 Phase
Minimum Circuit Ampacity 18 A
Maximum Fuse 25 A
Refrigerant Type R-454B
Refrigerant Charge 67.37 oz
Line Set Sizes 3/8" Liquid x 5/8" Gas
Net Dimensions (WxDxH) 37.24" x 16.14" x 31.89"
Net Weight 122.80 lbs
Recommended Wire Size 12 AWG (recommended for 18A load)
One Size Smaller (Risk) 14 AWG – May overheat or fail to meet code under full load
One Size Larger (Benefit) 10 AWG – Increased safety margin and reduced voltage drop

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 92559907038

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4.0 ★★★★★
Based on 15 reviews
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T
Verified Purchase
Tammy
Dallas, US
★★★★★ 5
The best for the money
Great deal
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
J
JoJo
Los Angeles, US
★★★★★ 5
Absorbent and Make Cleaning Easier
I purchased this Scott paper towel pack for everyday household cleaning, and overall, they have worked very well for daily use. They are practical, easy to store, and convenient for families that go through paper towels frequently. One of the biggest advantages is the pack size. The family-size bundle lasts a long time, and I like that the rolls are packaged into two separate bundles inside the larger pack, which makes storage and organization easier. The rolls themselves are slightly smaller in width, which actually works well because they fit easily onto any paper towel holder without being bulky or difficult to spin. In terms of performance, these towels are surprisingly absorbent despite being thinner than some leading brands. The ridged texture on each sheet helps pick up dirt, spills, and grime more effectively, and the “select-a-size” feature is very convenient since you can use smaller sheets when you only need a little. One of my favorite features is that they are lint free, which makes them especially useful for cleaning glass, mirrors, counters, and other surfaces where leftover fibers can be annoying. There are a couple of minor downsides. The paper towels are definitely thinner compared to other leading brands, and the overall roll size is somewhat smaller as well. However, they still absorb a good amount of liquid and hold up well enough for normal household cleaning tasks. Overall, these are a reliable and convenient everyday paper towel option. They may not be the thickest on the market, but the absorbency, lint-free design, and practical roll size make them a great choice for regular use around the house.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
K
Katie A.
Natrona Heights, US
★★★★★ 5
Good paper towels.
At the time of my review this set of 16 double layered paper towels are going for about $18.99. Not a bad price for a namebrand paper towel. I usually use Great Value paper towels because they are not only inexpensive but have good absorbency so it was interesting to compare it to the Scott namebrand, whom I use just about exclusively for my toilet tissue. The papertowels worked well as I expected them to but I did not specifically see a dramatic difference between it and the ones I usually used. The only noticeable differences to me were: - Scott paper towels had a prettier pattern - Scott paper towels visually had a much more tidy design and *looked* higher quality - Scott paper towels felt softer to the touch As for absorbency though? I felt like they performed identically. And trust me, we burn through paper towels. We have two small children and still have to wash bottles daily. So, we try to balance cost versus efficacy for papertowels because we use them so much every day. For the what they are these are great, but I will probably stick to the other brand unless I'm in a pinch and need to order papertowels more conveniently OR if these ever go on sale or have a coupon. I don't need my papertowels to look or feel pretty (the sloppy floral print and more coarse feel of the GV ones work for us right now because they are used exclusively for clean up), I need them to absorb and pick up gunk well. Would I still recommend these, though? Absolutely. Maybe appearance and texture are more important to you for a paper towels. We aren't there yet with our littles. Lol.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
H
Verified Purchase
H. Duell
Louisville, US
★★★★★ 1
Junk
Just pay for the better ones, these are cheap junk. They can’t even be torn off without falling apart.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
M
Verified Purchase
Mel
Lexington, US
★★★★★ 5
Nice bed
Color: Blue, Size: Large (Pack of 1)
Good quality dog bed. My pittie loves to burrow himself under blankets so I figured we would give this a try. He hasn’t figured it out yet but it’s his new favorite spot to take a nap when he’s not on our lap. Love the color and seems to be nicely made. I do wish it came in a bigger size but it’s still big enough for him.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026

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