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Description
MRCOOL DIY 5th Gen Multi-Zone 6-Zone 48,000 BTU 22 SEER2 (6K + 6K + 6K + 6K + 9K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling CassettesThe MRCOOL DIY 5th Gen 48,000 BTU 6 Zone Ceiling Cassette Mini Split System delivers powerful and flexible heating and cooling for up to six rooms all from a single outdoor condenser. Designed for easy installation and quiet performance, this ductless system combines high efficiency with a clean, low profile ceiling mounted aesthetic. Compatible with any combination of 6K, 9K, 12K, and 18K ceiling cassette air handlers, this system lets you customize
The MRCOOL DIY 5th Gen 48,000 BTU 6-Zone Ceiling Cassette Mini-Split System delivers powerful and flexible heating and cooling for up to six rooms — all from a single outdoor condenser. Designed for easy installation and quiet performance, this ductless system combines high efficiency with a clean, low-profile ceiling-mounted aesthetic.
Compatible with any combination of 6K, 9K, 12K, and 18K ceiling cassette air handlers, this system lets you customize comfort room by room. Whether you’re upgrading a residential home, office, or light commercial space, the 48K 6-zone system offers reliable comfort across a wide range of indoor environments.
Featuring a 21.8 SEER2 energy efficiency rating, built-in Wi-Fi, and smart controls via smartphone app, Alexa, or Google Assistant, MRCOOL’s DIY system is made for modern living without compromising performance.
Key Features:
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Covers up to 6 zones with a single 48K multi-zone condenser
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Compatible with 6K, 9K, 12K, and 18K ceiling cassette air handlers
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21.8 SEER2 energy efficiency for low operating costs
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DIY-friendly installation with no special tools required
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Flush-mount ceiling cassette design for unobtrusive comfort
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Whisper-quiet operation and advanced inverter technology
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Operates in extreme conditions: heats down to -13°F, cools up to 122°F
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Smart controls via MRCOOL app, Alexa, or Google Assistant
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Durable Gold Fin® coating for corrosion resistance
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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-MULTI6-48HP230D-O |
| GTIN | 840255587471 |
| UPC | 840255587471 |
| SHORT DESCRIPTION | MRCOOL® 48k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v |
| LONG DESCRIPTION | We’re excited to introduce our new 5th Generation MRCOOL® DIY® 48k BTU Multi-Zone Ductless Mini-Split Condenser, because it’s better than its predecessor in nearly every way. You won’t need the services of an HVAC professional when you’re setting this unit up, because you can do it yourself, which saves lots of time and money! This condenser enables you to heat and cool up to 6 separate spaces equalling up to 2,000 sq. ft., meaning you’d be able to cover an entire home in the completely efficient comfort of a single DIY® system. You can install this system on your own because our innovative, patented pre-charged Quick Connect® line sets allow you to skip the lengthy and complicated process of evacuating and charging the system. These line sets are filled with R-454B refrigerant, a much more ecological and proficient upgrade from the previous refrigerant used in the last generation. This switch helps the system achieve impressive efficiency levels, like 21.8 SEER2 and an HSPF2-4 of 10. These line sets are sold separately. Once you install your system, you’ll be able to explore the variety of ways you can customize your comfort. For ultimate control, you can integrate system operations with the SmartHVAC app, available for Apple and Android phones, allowing you the ability to set schedules, manage modes of operation, monitor your systems all with the touch of a button. The app even enables you to set up integration with Amazon Alexa and Google Home, meaning you won’t have to move a finger to make your home more comfortable than ever. We pride ourselves on having one of the best warranties in the industry on this unit! Once you install your condenser, you’re entitled to a 5 year parts warranty, a 7 year compressor warranty, and, if you subscribe to the MRCOOL® Care Program, a Limited Lifetime Replacement warranty. The MRCOOL® DIY® is the right choice if you want fast, efficient comfort that won’t let you down! |
| 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 | 21.8 |
| EER2 | 12 |
| HSPF2-4 | 10 |
| HSPF2-5 | 7.8 |
| TONNAGE | 4 |
| COOLING CAPACITY (BTU) | 43000 |
| HEATING CAPACITY (BTU) | 48000 |
| VOLTAGE (V) | 208/230 |
| PHASE | 1 |
| CYCLE | 60 |
| MAX FUSE BREAKER (A) | 45 |
| MIN CIRCUIT AMPACITY (A) | 40 |
| COLOR | White |
| ZONE CAPACITY | 6 |
| REFRIGERANT TYPE | R-454B |
| REFRIGERANT VOLUME (OZ) | 148.15 |
| 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) | 223.77 |
| GROSS DEPTH (IN) | 19.49 |
| GROSS HEIGHT (IN) | 58.27 |
| GROSS WIDTH (IN) | 43.11 |
| GROSS WEIGHT (LBS) | 256.39 |
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
4.3 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Close to perfect
This model is among Miele's most recent ones, and benefits from a few small but significant improvements on that account. I'd say that all but one of the components are both beautifully made and beautifully conceived. The floor head initially strikes me as problematic, and for exactly the reason that's suggested by a great many customer reviews of Miele floor heads, which is that when attempting to vacuum even low pile carpet there is a dramatic tendency for the head to essentially glue itself to the carpet. The vacuum power needed to be set on the second lowest of four settings to be able to slide the head over the carpet at all, with either of the two settings of the floor head (carpet or bare floor). So it seems to me that Miele still hasn't figured out how to make a single, multi-purpose floor head, or at least one that isn't electrically powered with a motor in the head to rotate a brush. They do also have air-turbine powered head brushes and models with no rotating brush like the one that comes with the Guard M1. Many types in all. The noise level of this model is even lower than I had hoped and this is one feature that has been further improved - excellent. Also, note that you can replace the default exhaust filter with a separately purchased HEPA filter if that's what you want: 99.999% filtration of the bag plus the HEPA exhaust filter rather than 99.99% filtration of the bag plus the standard, thin, provided, cheaper exhaust filter. This could be important for either allergy issues or safety vacuuming where rodents have made a mess, which can be quite dangerous. Best to lightly spray with dilute chlorine bleach first. There are four exhaust filter grades to choose from. The most basic is the supplied one. Miele desperately needs to improve their documentation to help customers figure out all the variables in their very complex system of models and features. I like this machine a lot. I just need to figure out a better way to vacuum flat surfaces (floors) which are both bare and carpeted. We have almost no high pile or shag rugs (one), so I figured this basic head would be a good choice but I'm concerned that I might never choose to use it on our carpets. Not sure yet. Otherwise close to perfection. One other thing: it's too easy to attempt to insert the bag backwards and not realize it! Oh, one other thing - The cover door for the motor protection filter was stuck closed. It's supposed to snap open when pulling on the handle with modest force but a strong pull didn't to do the trick. There's a slight defect in the mold of one of the two parts where the latch functions. I eventually got it open and used a jeweler's file to very slightly take the edge off the stationary part and now it's fine, but a person could break the cover door trying to overpower the latch. This is a factory defect that's tiny but with potentially very large consequences.
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Reviewed in the United States on March 19, 2026
★★★★★ 5
Excellent fit and value - recommended buy
Size: 3+12+12+2+1 pack
I rarely write reviews, but I'm so impressed by the fit and quality of this set that I made an exception. I'd been running my eufy 11S without brushes, and have been cleaning and reusing the filters for a while now and finally decided to buy replacements. The kit came packed well with everything in order and no damage. I replaced all of the worn parts and installed the brushes and did a test run - everything worked great. I expected some fitment issues because I've seen that with other kits, but I had no issues. The fact that you get multiples of almost everything is icing on the cake.
Oh, and I wasn't paid or given anything in exchange for this review, as much as that's worth now, haha.
I can recommend getting this kit for your robot vacuum, if it's the right set for your model.
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Reviewed in the United States on February 6, 2025
★★★★★ 5
Good option for an aftermarket replacement solution.
Size: 3+12+12+2+1 pack
I've been very happy with this product. I think it is a good price point for what is included. Everything was a directly compatible and everything fit as you would expect. The filter quality is good and since there are plenty in the kit I find I change the filters more often which is probably a good thing. I recommed.
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Reviewed in the United States on October 3, 2025
★★★★★ 5
Eufy Brushes wear out with daily use
Size: 4 Pack
These brushes help the Eufy continue to run efficiently. I have 2 dogs and run 2 Eufies daily. It is surprising how much sand, dust, gravel and hair gets vacuumed. My furniture isn't as dusty and my floor doesn't need mopping as often.
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Reviewed in the United States on January 7, 2026
★★★★★ 4
It works
Size: 2+12+12+2 pack
Fits as expected and it's nice to have so many replacement parts. This item is priced well.
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Reviewed in the United States on January 11, 2026