SKU: 428460221

MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 9K + 9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

Sale price$3324.60 Regular price$3694.00
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 9K + 9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat PumpUpgrade your homes climate control with the MRCOOL DIY 5th Gen 55K BTU 6 Zone Ductless Mini Split System, expertly configured with four 9K and two 12K wall mounted air handler. This powerful combo is ideal for homes with a mix of small and larger roomsproviding precision temperature control across six zones without sacrificing efficiency or ease of use. The system features MRCOOLs DIY Quick Connect technology, pre charged lines, and smart home

Upgrade your home’s climate control with the MRCOOL DIY 5th Gen 55K BTU 6-Zone Ductless Mini-Split System, expertly configured with four 9K and two 12K wall-mounted air handler. This powerful combo is ideal for homes with a mix of small and larger rooms—providing precision temperature control across six zones without sacrificing efficiency or ease of use.

The system features MRCOOL’s DIY Quick Connect® technology, pre-charged lines, and smart-home integration, making it the go-to solution for confident homeowners who want professional-grade HVAC performance without professional installation. Built for flexibility, durability, and energy savings, this 5th Gen model is SEER2 rated up to 20.5 and comes loaded with features like Gold Fin® corrosion resistance, Wi-Fi controls, and low ambient heating/cooling.

Key Features:

  • (1) 55,000 BTU 5th Gen DIY Multi-Zone Condenser (supports up to 6 zones)

  • (4) 9,000 BTU, (2) 12,000 BTU DIY Wall Mount Air Handlers

  • SEER2 Rating: Up to 20.5

  • Smart HVAC Control – Compatible with MRCOOL app, Alexa & Google Assistant

  • DIY Installation – Pre-charged lines, no vacuuming or special tools needed

  • Gold Fin® Coating – Rust-resistant, ideal for coastal or humid areas

  • Advanced features: Auto Restart, Leak Detection, Sleep Mode, Follow Me®

  • UL Listed & AHRI Certified

  • Backed by 5-Year Parts and 7-Year Compressor Warranty

 

Includes:

  • (1) MRCOOL 55K BTU 5-Zone DIY Condenser (Model: DIY-MULTI5-55HP-WM00C)

  • (4) 9K and (2) 12K DIY Wall Mounted Air Handlers

  • (6) Remotes

  • Installation Manuals

 

Specifications:

BRAND NAME MRCOOL
SERIES DIY 5th gen Multi-Zone Mini-splits
MODEL DIY-MULTI6-55HP230D-O
GTIN 840255587488
UPC 840255587488
SHORT DESCRIPTION
MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v
SEER2 22
EER2 12
HSPF2-4 10.6
HSPF2-5 8.5
TONNAGE 4.6
COOLING CAPACITY (BTU) 47000
HEATING CAPACITY (BTU) 55000
VOLTAGE (V) 208/230
PHASE 1
CYCLE 60
MAX FUSE BREAKER (A) 45
MIN CIRCUIT AMPACITY (A) 43
COLOR White
ZONE CAPACITY 6
REFRIGERANT TYPE R-454B
REFRIGERANT VOLUME (OZ) 151.68
DECIBEL RATING (DBA) 64
INVERTER DC
LINE SET LENGTH 25
MAX LINESET LENGTH (FT) 221.4
LIQUID LINE SIZE 1/4
SUCTION LINE SIZE (3/8 X4) (1/2 X2)
COMPRESSOR MOTOR TYPE Rotary
AUXILIARY HEATER INCLUDED No
AUXILIARY HEATER AVAILABLE No
FAN ONLY OPTION Yes
QUIET MODE Yes
AUTO COOL Yes
WIFI COMPATIBILITY Yes
APP COMPATIBILITY Yes
WORKS WITH IOS Yes
WORKS WITH ANDROID Yes
UL LISTED Yes
ETL LISTED Yes
ENERGY STAR CERTIFIED Yes
AHRI CERTIFIED Yes
REGISTERED WARRANTY Extended Limited Lifetime*
BASE PARTS WARRANTY 5
BASE COMPRESSOR WARRANTY 7
HAS BATTERIES Yes
CONTAINS ELECTRONICS Yes
CONTAINS CHEMICALS Yes
CONTAINS AEROSOL Yes
CONTAINS COMPRESSED GAS Yes
PROPOSITION 65 WARNING Yes
NET DEPTH (IN) 16.34
NET HEIGHT (IN) 52.48
NET WIDTH (IN) 37.48
NET WEIGHT (LBS) 245.81
GROSS DEPTH (IN) 19.49
GROSS HEIGHT (IN) 58.27
GROSS WIDTH (IN) 43.11
GROSS WEIGHT (LBS) 267.46
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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]
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SKU: 428460221

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4.5 ★★★★★
Based on 13 reviews
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Product Reviews
S
Verified Purchase
SL
Phoenix, US
★★★★★ 4
Great Ergonomic Support and Fit, with Minor Adjustment Caveats
Color: Black Full Mesh, Style: Executive, Color: Black Full Mesh, Style: Executive
As someone who is 5'4" and 140 lbs, the size of the chair feels ideal, and the seat cushion is spacious without feeling overwhelmingly large. The breathable mesh material is high quality, keeping me cool during long working sessions while still feeling sturdy. The back support and adjustable lumbar feature aligns perfectly with my spine and has noticeably reduced my posture fatigue. The height adjustment mechanism operates smoothly to align perfectly with my desk, and the assembly process was surprisingly straightforward, taking less than 20 minutes with clear instructions and tools included. My only slight hesitations are regarding armrests not being long enough. The wheels are not easy to roll on carpet and require a bit of extra effort to move. Maybe a chair mat might be helpful on carpeted floors. However, for the price, the comfort and build are impressive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
J
Verified Purchase
JFH
Cuba, US
★★★★★ 5
High quality and incredible customer service
Color: Black Full Mesh, Style: Executive
This is an extremely well made chair at a very competitive price. The packaging, assembly instructions, as well as the way the hardware was packaged and labeled is probably the best I've seen. I'm particular about tools, and the included allen wrench was better than the normal "included tools" so much so that i actually used it rather than one of my own. The assembly was easy, and the chair itself looks and feels very high quality, and is very comfortable. Perhaps best of all was the level of customer service. I emailed on a weekend to activate the warranty and request the free cushion they offer. I got a personal response in less than a day and they offered upgraded wheels for free as well. This is a company worth doing business with.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
M
Verified Purchase
Michael Verbeke
San Leandro, US
★★★★★ 5
Great product AND customer service!
Color: Black Full Mesh, Style: Executive
I'm having a hard time writing this review because I can't tell which one I like better: the product or the customer service! I work on a computer all day, so a comfortable office chair is critical for me. This chair is great - it's adjustable in every way I need it to be, especially the armrests. The breathable mesh is both durable and supportive, and is more comfortable to sit in than the "overstuffed" chair it replaced. Let me just say: no company provides better customer service than MOLENTS. Right after assembling my chair (which was very easy, btw), I registered for the 2 year warranty they offer. The NEXT DAY I received an email from Alice in their customer service department 1) to confirm my warranty, 2) to tell me about the free foam seat cover they were sending me, and 3) to make sure the chair was comfortable and easy to assemble. Very few companies take the effort to follow up with customers right after making a purchase like that. I'm extremely happy with this purchase. This chair is worth MORE than it's weight in gold, and I strongly recommend to anyone thinking about buying an office chair to buy it from MOLENTS - you won't regret it. Oh, and if Alice's supervisors are reading this: she absolutely deserves a promotion!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
S
Verified Purchase
S. Carpenter
Lexington, US
★★★★★ 5
Great value and a good chair
Color: Black Full Mesh, Style: Executive
Great chair for the price. Not as solid as an Ergo but it's not thousands of dollars either. It's pretty easy to assemble and the directions are good. It rolls well on LVP flooring and they offer 'upgraded' wheels at no cost from what I can tell. I didn't order them since the included ones work perfectly. I'm 6'4" and both the seat and arm heights can be adjusted to fit me well. The mesh seat is comfortable and the back works fine. The only downside for me is that the lumbar support doesn't adjust quite high enough to actually reach my lumbar area, but I think it would work for most folks. Overall it's hard to argue with the cost and even if it only lasts a few years it's worth the money.
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Reviewed in the United States on December 21, 2025
R
Verified Purchase
Rob
Whiting, US
★★★★★ 5
Great Chair and Outstanding Customer Service
Color: Black Full Mesh, Style: Executive
I desperately needed a new office chair. I ordered this chair with the mesh seat and it spike up my sciatica. I reached out to the company and Alice took great care to address the issue. She sent me a new seat with a foam cushion and it resolved the issue immediately. The chair is incredibly comfortable with the lumbar support, adjustability and foot support. She also sent me upgraded wheels as my chair is on a thin chair mat on hard wood floors. Alice was extremely responsive with possible options and very thorough with instructions on how to replace the seat. It is a high quality chair that I anticipate will last me quite some time. I highly recommend this company and will definitely order products from them again should the need arise. Thank you, Alice!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026

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