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Description
MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (6K + 6K + 9K + 9K + 9K + 9K) 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 1290 reviews
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Product Reviews
★★★★★ 5
I've bought like 20! Love them!!!
Size: Large, Pattern Name: Pack of 1
My dog is obsessed with this ball! Glow in the Dark is super bouncy, easy to spot at night, and tough enough to handle rough play. Perfect for evening fetch sessions—fun for both of us! We have bought about 20 of these so far. I always bring my dog to play fetch at night, and this is perfect if you're playing in a field or beach. Glows in the dark so both you and your dog can see it. The size of the ball is great for my big dog. It is also the perfect type of silicone so that my dog cannot easily tear it apart and chew it, which is GREAT! We do NOT want our dog's ingesting silicone at all. If you have a ball chewer, this ball is perfect and durable. Chewing ability is good and is not too tough but tough enough.
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Reviewed in the United States on August 10, 2025
★★★★★ 5
Cane Corso approved....
Size: Large, Pattern Name: Pack of 1
My Cane Corso loves this ball!!! She carries it around in her mouth like a round pacifier.
Sometimes I'll wake up with the ball next to my head on my pillow. Lol
This is the third one I've bought.
She doesn't destroy them at all . Somehow she loses them. Yesterday she had two floating around. Lol.
Earlier I gave her one of those hard rubber balls with feet... She destroyed it within minutes. She can skin a tennis ball and chew it in half in about 5 minutes.
This ball is by far a favorite toy of her's. And she doesn't chew it to bits .
And it glows in the dark which is fun for playing fetch at night.
It's very easy to clean.
Sometimes I put little snacks inside for her while she's laying down with her ball.
I will definitely keep buying these balls everytime we lose one . They make her happy. And that makes me happy.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
BEST GLOW BALL! MY COLLIE BLUE HEELER MIX IS OBSESSED
Size: Large, Pattern Name: Pack of 1
Well if I could just say...Mommas a fan too....BUT I think my dog should be the sponsor of CHUCKIT because he owns everything and he BREATHES, DREAMS, RUNS with #chuckit balls!! Since 8wks. old & Now 10 yrs young, BDAY=8.10.26....he wakes up with it in his mouth and falls asleep with IT! I HAVE THEEEE PROOF LOL SERIOUSLY OBSESSED! #chuckit #makemydogyoursponsor WE HAVE EVERY BALL X10 FOR SOME, launchers, bucket o balls , you name it so yeah #obssesedisanunderstatement #bordercollieblueheelermix #HARLEY ♡ nice colors and the durability is amazing 👏 know if you have a chewer I'm not sure because he just likes to catch the ball and then chew it sometimes and then leave it alone, until next time around. But the GLOW BALL just being cewed for so long and the textire is obviously different so it does end up cracking and you throw it away, definitely different rubber but highly recommend them both actually ALL of them👌🎉🥳🫶🏼 my Sisters 2 yr old pit destroyed them in minutes but only FOR PLAY , so IF YOU DONT WANT THAT BALL chewed to pcs. Put it up LOL and oh
all of the balls EXCEPT the GLOW BALL stay true to form and durability, for real Harleys had some of them for years!! And nothing wrong with the CHUCKIT ball 10☆☆☆☆☆☆☆☆☆☆ SIZE is perfect too he love the medium 2.5" ball. Perfect for catching for hrs on end. You also have a choice you can get squeaky, crunchy,or nothing or glow in the dark, 3 sizes to fit your pupper..
.. so many choices and it doesn't have to be a ball you can pick from a ton of toys ' tuggers ,launchers and indoor toys too. As for the Chew resistance...mm touchy...like I said. Aggressive chewer are more likely to tear it up way quicker than the just playing mainly like I want to fetch dog. Either way. I dont purchase any other brand besides chuck it. Has always my pick, like 20+ yrs now lol. Hands down. This is not a paid thing or promoted or whatever. Just felt i should review for chuck it♡ to date has made my dog happy and healthier for years to come♡ thanks
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Reviewed in the United States on May 8, 2026
★★★★★ 4
These are great!
Size: Medium, Pattern Name: Pack of 2
My dog loves these and now won't play fetch with any other ball. I love that they glow bright so we can play fetch after I get home from work (it gets dark around 5 now). The dog and I both like that they whistle. They also squish easily and he loves to chomp on them while he runs around. Only reason I took off a star is because he chewed a piece of it off and now it doesn't whistle or fly as far. That being said, it seems to stand up well to all the chomping he does on it. I should not have left him alone with it, I think he held it down and pulled on it. If your dog usually makes it his mission to destroy things I wouldn't leave him alone with it, other than that I absolutely recommend these.
Update 12/12/20: I got another dog last year and he also loves these balls. Probably the favorite ball for both dogs, they go into hyperdrive when they see them. New dog tends to be more destructive than the older one and I still don't leave them unattended with these balls, but new dog has not destroyed one. I made the mistake of leaving one in the Chuckit overnight once. Ball was wet from playing in the snow and became lopsided. Now doesn't fly very well but my weird dog still likes it. It is also starting to dry out and crack. None of the other glow balls have done this, I'm assuming it is also from leaving it in the Chuckit overnight.
Other than that, these balls are great. I did read a few reviews that said charging them with UV light made them stay brighter for a longer period, but I did not notice a difference in my quick test of this theory. Just keep a good flashlight with you and brighten them up as needed.
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Reviewed in the United States on December 6, 2018
★★★★★ 5
Good for night sessions
Size: Medium, Pattern Name: Pack of 1
Picked this up for evening fetch sessions and it’s been a win. It charges up fast, couple minutes under a lamp or in sunlight and it’s good to go, and the glow is genuinely bright, not the sad dim purple some of these put out. Makes it way easier to find in the yard at dusk, and the dog can actually track it.
It’s a little on the softer side compared to a regular tennis ball, but durable enough to hold up to my big dog, who is not gentle with toys. Still kicking after plenty of chomping and slobber. Fits a standard Chuckit! launcher perfectly, which is the whole point.
Pros:
• Glows brightly and clearly in the dark
• Charges fast from any light source
• Holds up well even with a big, enthusiastic chewer
• Fits standard ball-throwing sticks
• Great for evening or early-morning fetch
Cons:
• A bit softer than a regular tennis ball — a determined power-chewer could probably destroy it eventually
• Glow fades after a while, so you’ll need to recharge it during long sessions
• Only glows if it’s been charged, which is obvious but easy to forget
Tips:
• Charge it under a bright light or in the sun for a few minutes before heading out
• A flashlight works in a pinch if you forgot to charge it
• Keep it out of permanent fetch duty — rotate with a regular ball so it lasts longer
• Not a chew toy, even though it’s tempting to leave it with the dog
Five stars. If you’ve got a dog and a yard, this makes evening fetch actually doable.
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Reviewed in the United States on May 24, 2026
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