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Description
MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (6K + 6K + 6K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling CassettesThe MRCOOL DIY 5th Gen 55,000 BTU 6 Zone Ceiling Cassette Mini Split System is the largest capacity DIY unit available, capable of heating and cooling up to six individual zones with precision and efficiency. Designed for powerful whole home performance, it combines a high output condenser with your choice of low profile ceiling cassette air handlers all with smart control and DIY installation in mind. This system supports any combination of 6K, 9K,
The MRCOOL DIY 5th Gen 55,000 BTU 6-Zone Ceiling Cassette Mini-Split System is the largest capacity DIY unit available, capable of heating and cooling up to six individual zones with precision and efficiency. Designed for powerful whole-home performance, it combines a high-output condenser with your choice of low-profile ceiling cassette air handlers — all with smart control and DIY installation in mind.
This system supports any combination of 6K, 9K, 12K, and 18K ceiling cassettes, allowing full customization for bedrooms, living rooms, garages, offices, or large open spaces. With a 21.5 SEER2 rating, it maximizes efficiency while delivering serious comfort even in extreme weather conditions.
Whether you’re retrofitting an older home or building out a modern multi-room system, this DIY 6-zone setup offers unmatched versatility — without the need for a pro HVAC installer.
Key Features:
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Supports six indoor zones with a single 55K condenser
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Compatible with 6K, 9K, 12K, and 18K ceiling cassette units
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21.5 SEER2 energy efficiency for lower utility bills
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Ideal for large homes, offices, shops, or multi-room spaces
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Flush-mounted ceiling cassettes blend seamlessly into any décor
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DIY installation with included quick-connect fittings
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Operates in extreme temperatures: heats to -13°F, cools to 122°F
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App, Alexa, and Google Assistant smart control integration
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Corrosion-resistant Gold Fin® condenser coating
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Backed by 5-year parts and 7-year compressor warranty
| 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 |
| LONG DESCRIPTION | Our new 5th Generation MRCOOL® DIY® 55k BTU Multi-Zone Ductless Mini-Split Condenser is one of the most efficient and innovative units in the industry, and we’re excited to finally share it with you! On top of saving time and money because you won’t need an HVAC professional, this system will give you a good sense of accomplishment because you’ll have installed it yourself! The whole family will be able to enjoy the comfort of this condenser, because it can heat and cool up to 6 different spaces that equal up to 2290 sq. ft., giving you the ability to heat and cool an entire home to your exact specifications using a single MRCOOL® system. The system’s patented pre-charged Quick-Connect® line sets essentially fast-forward the installation of this system, enabling you to skip the evacuation and charging steps and simplifying the entire process. We utilize new R-454B refrigerant in these line sets, which is a much more environmentally friendly and efficient choice. Features like these assist this unit in achieving its impressive SEER2 of 22, and its HSPF2-4 of 10.6, both of which signify that this system will help you save money throughout the entire time you use it. These line sets are sold separately. Once you install this condenser, you’ll be met with a variety of features to help you control your comfort. One of these features is the Smart HVAC app, available on Apple and Android, that allows you to operate your system from the convenience of your phone. Set schedules, manage different modes, monitor energy consumption, and more all without having to leave the couch! You can also set up voice control through Amazon Alexa or Google Home, meaning you can control your comfort without moving a finger. This system ensures you’ll be enjoying ultimate convenience and superior comfort. The warranty for this unit is one of the best in the industry, and we’re proud to have your back. You can enjoy the peace of mind of a 5 year parts warranty, a 7 year compressor warranty, and, once you enroll in the MRCOOL® Care Program, a Limited Lifetime Replacement warranty. If you need perfect comfort but don’t want to break the bank, this MRCOOL® DIY® condenser is your answer! |
| FEATURE LIST | Intertek listed 5031495 Easy DIY installation Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit. Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort. The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box. |
| 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:
- 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
4.5 ★★★★★
Based on 2349 reviews
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Product Reviews
★★★★★ 5
**Reliable and Efficient: Nilight 50FT 14AWG Speaker Wire Review**
Size: 14AWG-50FT
I recently set up my home theater system using the Nilight 50FT 14AWG Copper Clad Aluminum Wire, and I'm quite satisfied with its performance. The 14 gauge thickness is ideal for ensuring high-quality sound transmission, which is crucial for a setup like a 5.1 surround sound system. Although it's not pure copper, which some audiophiles might prefer, the copper clad aluminum (CCA) used in this wire provides a great balance of quality and value. It's flexible, lightweight, and offers good corrosion resistance, making it an excellent alternative to more expensive pure copper wires.
The wire comes in a 50-foot length, which was just enough for my setup with speakers placed at various points around the room. One of the features I appreciate most about this product is the color-coded PVC jacket. It simplifies the installation process by making it easy to differentiate polarity, reducing the risk of errors during setup. The wire is also easy to handle; it cuts and strips smoothly, allowing for a clean and secure connection.
The environmental PVC jacket provides good elasticity and fire resistance, adding an extra layer of safety to its use in home environments. While the jacket is thick, it's important to note that it isn't shielded, so I made sure to route it away from power cords to avoid potential interference.
Overall, the Nilight 14AWG wire is an excellent choice for anyone looking to install a reliable and effective speaker system at home. It's straightforward to use, provides great performance, and comes at a cost-effective price point. I would definitely consider purchasing it again for future projects. Whether you're setting up a new system or upgrading an existing one, this wire is definitely worth considering.
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Reviewed in the United States on April 29, 2024
★★★★★ 4
Great for the price!
Size: 14AWG-50FT, Size: 14AWG-50FT
Ordered a spool of wire to install a new light bar and rock lights on my Jeep. Did the trick and cheaper than most other brands.
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Decent copper clad aluminum
Size: 14AWG-50FT
If you want the best wire, you should probably go with pure copper wire. It is more expensive but conducts better and thus is more efficient and less likely to heat up. If you are doing a low power, short run of cable, however, this wire should serve your purposes well.
My purposes for such wire are varied. I am a licensed ham, like to build circuits, and have an electrical engineering degree. Depending on the specific tasks I'm on, some I'll gladly use this wire, others I'll go with pure copper.
In comparison to other similar copper clad aluminum wire I've used in the past, the wire is pretty flexible and easy to work with. I also prefer the softer insulation like this has. You need to fit the wire to the job but if you have the job this is right for, it'll serve you well.
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Reviewed in the United States on April 22, 2024
★★★★★ 5
good wire for the price
Size: 14AWG-50FT
This speaker wire is of good quality. I don’t know what to say about it besides that its 14 gauge, which is a bit on the thick side, but good for getting high quality sound or for doing long runs of cable. Its not pure copper, but that's not really necessary unless you are an audiophile and even then, i wonder if its really noticeable. The 50 feet it comes with is enough for a 5.1 surround system, as long as your speakers aren’t too far away. I haven't noticed any weird sounds from my system after setting it up with this cable. The housing is relatively thick but not shielded, so I was careful to keep it away from power cords. All in all this is good cable, especially for the price, and I would purchase it again.
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Reviewed in the United States on April 23, 2024
★★★★★ 4
Not as good as pure copper, but maybe good enough
Size: 14AWG-50FT, Size: 14AWG-50FT
This wire is copper-clad aluminum, which means you sacrifice some conductivity for a for a less expensive conductor. This wire is very lightly clad with copper - the thinness of the copper coating is obvious from a casual observation (see image).
I measured 4-wire resistance across the entire length (50') of wire - it comes out to 0.34 ohms on each lead. This is a bit less than double what you'd expect from an equivalent length of the same gauge of multistrand copper, so if you're planning on running a long length of this it might be prudent to pretend that you're working with a slightly smaller gauge than you actually are. That is exactly the approach I'm taking with it, and it works well for me within that context.
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Reviewed in the United States on April 19, 2024