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Description
MRCOOL DIY® 5th Gen 27,000 BTU Multi-Zone Mini Split Condenser 230V, DIY-MULTI4-27HP230D-OMRCOOL DIY 5th Gen 27,000 BTU 4 Zone Multi Zone Mini Split Condenser 230V Model: DIY MULTI4 27HP230D O Experience flexible zone control and energy efficient performance with the MRCOOL DIY 5th Gen 27,000 BTU Multi Zone Mini Split Condenser. Designed for fast DIY installation, this 230V outdoor unit supports up to four zones and connects with multiple air handler combinations for personalized comfort throughout your home or workspace. Requires at least
MRCOOL® DIY 5th Gen 27,000 BTU 4-Zone Multi-Zone Mini Split Condenser – 230V
Model: DIY-MULTI4-27HP230D-O
Experience flexible zone control and energy-efficient performance with the MRCOOL® DIY 5th Gen 27,000 BTU Multi-Zone Mini Split Condenser. Designed for fast DIY installation, this 230V outdoor unit supports up to four zones and connects with multiple air handler combinations for personalized comfort throughout your home or workspace. Requires at least 2 air handlers to operate and supports up to 33,000 BTU total indoor capacity.
Key Features
- DIY Installation: Tool-free setup with pre-charged Quick Connect® line sets – no vacuum or special tools required
- Smart Control: Compatible with Smart HVAC App, Amazon Alexa & Google Assistant for voice-activated comfort
- Eco-Friendly Refrigerant: Pre-charged with R-454B, a low-GWP refrigerant that reduces environmental impact
- Gold Fin® Condenser: Anti-corrosive finish protects against coastal conditions and extends lifespan
- DIYPRO® Cable: Armored communication wire eliminates the need for electrical conduit outdoors
- Trusted Warranty: 7-Year compressor warranty, 5-Year parts warranty, and optional Lifetime Replacement with MRCOOL® Care registration
System Specs
- Cooling Capacity: 27,000 BTU/h
- Heating Capacity: 28,400 BTU/h
- SEER2: Approx. 21.2 (varies by air handler configuration)
- HSPF2-4: ~10.3 | HSPF2-5: ~8.2
- Power Supply: 208–230V, 60Hz, 1 Phase
- Minimum Circuit Ampacity: 24 A
- Maximum Fuse: 25 A
- Refrigerant Type: R-454B (Charge: ~67.37 oz)
- Line Set Sizes: 3/8" Liquid x 5/8" Gas
- Recommended Coverage: 1,100 – 1,400 sq. ft. (based on configuration and insulation)
Compatible Air Handler Combinations (Max 33,000 BTU)
This condenser supports 6K, 9K, 12K, and 18K MRCOOL 5th Gen air handlers. A minimum of 2 air handlers must be connected, and total combined capacity should be between 70% and 122% of the rated output (18,900 – 33,000 BTU).
Examples of valid combinations include:
- 12K + 12K + 6K = 30K
- 9K + 9K + 9K = 27K
- 18K + 12K = 30K
- 6K + 6K + 12K = 24K
- 9K + 12K + 6K = 27K
Recommended Wire Size
- Recommended: 10 AWG copper wire – supports 24A MCA and 25A max fuse
- One Size Smaller (12 AWG): Not recommended – may overheat under load and violate NEC code
- One Size Larger (8 AWG): Ideal for long wire runs or added safety margin to reduce voltage drop
Note: Always verify total indoor air handler capacity before ordering. MRCOOL DIY condensers are pre-charged with R-454B and are not interchangeable with R-410A systems. Specifications may vary by production batch.
Buy confidently from MRCOOL DIY Direct – America’s most trusted source for DIY HVAC systems.
Specifications & Dimensions
| Specification | Details |
|---|---|
| Model Number | DIY-MULTI4-27HP230D-O |
| Cooling Capacity | 27,000 BTU/h |
| Heating Capacity | 28,400 BTU/h |
| Recommended Coverage Area | 1,100 – 1,400 sq. ft. |
| SEER2 | Approx. 21.2 |
| HSPF2-4 | 10.3 |
| HSPF2-5 | 8.2 |
| Power Supply | 208–230V, 60Hz, 1 Phase |
| Minimum Circuit Ampacity | 24 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 | 10 AWG (recommended for 24A load) |
| One Size Smaller (Risk) | 12 AWG – May overheat or fail to meet code under full load |
| One Size Larger (Benefit) | 8 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:
- 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 30 reviews
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Product Reviews
★★★★★ 5
They really do work!
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
I rarely give reviews that aren’t motivated by disappointment, but this is one of them. Medicube makes several products that I use alongside $170 serums and creams, and the Zero Pore Pad is one of them. I love the dual texture, and even after using a pre-cleanser and a “microfolient” face wash (both expensive washes from by Dermologica), the Zero Pore Pad is my ONLY choice for a toner. Compared to the products that go on after using the pads, the pads are incredibly affordable for the results I’ve seen. On the rougher side of the pad, this toner still somehow finds pockets of sebum that are visible on the pad after using as directed. It’s like magic.
I’m on my third container of Zero Pore Pads and I can say, without a doubt, they have had noticeable results on my skin, mostly on my nose and the cheek area around my nose. The size of my pores are now smaller, almost invisible. This is despite the fact that I layer a bunch of serums, creams and a moisturizer at night that I lock in with the peel-off Medicube collagen mask. Despite the weight of it all on my pores, the pads still have worked, and they aren’t harsh like some toners-but if you have very sensitive skin or are on acne medication, go with their milder sister product). I wash my face three times a day due to the ick of polluted air and layers of moisturizer and sunscreen, so I’ve been using these three times a day, but occasionally I use the Koji and Tumeric Pads, which have had no noticeable effect aside from serving as a basic toner.
The application is lovely on all Medicube’s pads with their dual texture, but like the collagen mask these Zero Pore Pads really do work (for me). Because skin varies with age and melanin content, I am a pale white woman (female at birth) of Scandinavian descent so I don’t know if these would have had the same impact on me at age 17, but now they work, really well. I literally have the glass skin K-beauty prizes—I just used the pads and thought I had something on my face because my skin was shining. I love these, try them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026
★★★★★ 4
Good toner pad option
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
I like these to use no more than 1-2x a week for my skin. I use them before bed and wake up noticing smoother and more event toned skin. If you use them too often, they can cause redness and irritation, but I have never gotten a rash or a breakout because of them. I will say, they do not exfoliate all your texture away and refine your pores to perfection like the marketing says, but nothing does. The AHA and BHA are the chemical exfoliants and work just like they do in any other product. The pads are very moist and stay saturated in the container as long as you keep the lid shut. Overall, a good toner pad option to be used occasionally in your routine and do not mix with any other actives.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Refreshing Exfoliating Pads for Smoother Skin
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
These exfoliating pads leave the skin feeling noticeably smoother and cleaner after use. They work especially well for oily or combination skin types that struggle with excess sebum, clogged pores, or uneven texture.
I like that the formula combines both natural BHA from white willow bark and AHA ingredients for gentle exfoliation without feeling overly harsh. The pads help remove buildup and excess oil while making pores appear cleaner and more refined over time.
The lavender scent adds a calming and spa-like feel to the skincare routine, and the pads feel soothing instead of irritating during use. The dual-sided design is also helpful since the textured side provides exfoliation while the softer side helps smooth and prep the skin afterward.
Another nice feature is how convenient and quick they are to use after cleansing, especially for busy routines or nighttime skincare.
Minor note: People with very sensitive skin may want to start using them a few times a week first before increasing frequency.
Overall, a refreshing and effective exfoliating pad that helps improve skin texture, reduce excess oil, and leave the skin feeling clean and balanced.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Ive been ordering these for years now
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
I’ve been using these toner pads twice a day and they’ve worked really well for my skin. Since using them consistently, my acne has stayed under control much better than before. The pads feel gentle and don’t irritate my skin at all. I also like how convenient they are compared to using separate toner and cotton pads. My skin feels cleaner and smoother after each use. The container stays sealed well so the pads don’t dry out quickly. Overall, these have become a staple in my skincare routine.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
The Biggest Visible Change I’ve Seen in My Skin in Years
Color: Zero Pore Pads, Size: 70 Count (Pack of 1), Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
If I could only keep one skincare product, it would honestly be these pads.
Even after trying peels, tools, clay masks, exfoliants, and retinol, this is the most noticeable improvement I’ve seen in my skin.
I’m in my 50s and have tried a lot of skincare over the years — pore strips, clay masks, exfoliants, retinol, you name it. Very few products have made a noticeable difference in my skin, but these absolutely have.
My biggest concern has always been the pores on my nose. They’ve looked enlarged for years and it’s something I’ve been self-conscious about. After using these pads, the difference was surprisingly visible — my pores looked tighter, my skin texture smoother, and my nose looked noticeably clearer.
I added a close-up photo because this is where I’ve seen the biggest difference — my pores look visibly tighter and clearer
What impressed me most is that I saw improvement right away, but the results actually kept getting better with consistent use. After about a month, my skin looks more refined overall and my nose pores appear much smaller than they used to.
I also have sensitive, combination skin, so I’m careful with exfoliating products. These have been very gentle for me. The pads are thin but well saturated (not dripping), and I like using the textured side first to exfoliate, then flipping to the smooth side to finish. There’s no strong fragrance and they haven’t irritated my skin.
Another unexpected benefit is how much better my makeup applies now. Foundation sits more smoothly and doesn’t settle into my pores the way it used to.
After years of trying different skincare products, this may honestly be the one that has made the most noticeable change in my skin.
If enlarged pores on your nose bother you like they did me, this product is absolutely worth trying.
This is one of the few products that has genuinely shocked me with how well it works! I’ve been telling everyone I know and I’m not a spokesperson! I’m just impressed and happy to find something that works so well! 🩵
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
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