DIY 48,000 BTU 4-Ton 3-Zone 20.5 SEER Ductless Mini-Split AC and Heat Pump with 12K+18K+18K & 35,66,66ft Lines
- High-efficiency ductless mini split system: 20.5 SEER2
- Easy DIY mini split installation with pre charged R410A lines
- Multi zone heat pump provides cost effective heating: HSPF2 9.2
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Product Details
About This Product
This MRCOOL DIY 48,000 BTU 4 Ton 3 Zone Ductless Mini Split Air Conditioner and Heat Pump with Wall Mounted Air Handlers bundle includes: 48K BTU Condenser, one 12K BTU Wall Mount, two 18K BTU Wall Mounts, 16/16/35/50/50ft. Quick Connect lines (1/4 X 1/2), 75/75ft. Coupler Kit(s) (1/4 X 1/2), 3 Remotes, and 3 Smart HVAC Wi Fi kits. While the 12K BTU Wall Mount is capable of heating and cooling up to 500 Sq Ft. Each 18K BTU Wall Mount is capable of heating and cooling up to 750 Sq Ft. MRCOOL offers an easy DIY ductless mini split installation with their patented DIY pre charged quick connect line sets that makes connecting refrigerant piping as simple as turning a few wrenches. The innovative Gold Fin anti corrosion technology makes this a great choice for those in coastal regions where corrosion is more likely. With a sleek design and quiet operation, the mini split wall mounted air handler is efficient and economic. Whether it be new construction, retrofit, greenhouse, server room or anything between they are designed to effectively and efficiently cool and/or heat your desired location. It can be operated with the included remote, Alexa, or Google Assistant. This system is backed by a 7 year compressor warranty and 5 year parts warranty.
Highlights
- Energy efficiency: 20.5 SEER2, 9.2 HSPF2
- Designed to efficiently provide ductless heating and cooling up to a combined 2000 Sq Ft
- Easy DIY installation: pre-charged R 410A quick connect line doesn't require special tools, equipment, or training
- SmartHVAC App: Wi-Fi control compatible with Alexa and Google Assistant you can control your DIY anywhere with your Apple or Android smart device and an Internet connection
- Low ambient cooling: cooling down to 5F this feature makes the MRCOOL DIY the ideal system for computer server rooms, greenhouses, and any other application that requires cooling all year
- Offers 7 Year Compressor warranty and 5 Year Parts warranty
- The sum of the length of all line-sets for this system shall not exceed 221.5 ft. The maximum length for each air handler is 75ft.
- Please note: 12K, 18K air handlers require 1/4 x 1/2 line-sets.
- Lifetime technical support
- Works with Alexa
- To estimate the BTU range (cooling capacity), use our Air Condition BTU Calculator
- Click here for more information on Electronic Recycling Programs
- Return Policy
- California residentssee Prop 65 WARNINGS
Product Information
Additional Resources
Shop All MRCOOLSpecifications
Dimensions
Air handler depth (in.) | 19.57 | Air handler height (in.) | 13.98 |
|---|---|---|---|
Air handler width (in.) | 36.02 | Condenser depth (in.) | 19.49 |
Condenser height (in.) | 54.33 | Condenser width (in.) | 43.11 |
Details
Air direction/circulation | 4-way | Air Handler BTU | 12000 BTU x 18000 BTU x 18000 BTU |
|---|---|---|---|
Air handler weight (lb.) | 23.81 | Amperage (A) | 60 A |
BTU Cooling Rating | 48000 BTU | BTU Heat Rating | 48000 BTU |
Color Family | White | Color/Finish | White |
Condenser weight (lb.) | 254.41 | Coverage Area (sq. ft.) | 2000 |
Decibel (Sound) Rating | 62 dBA | Decibel Rating | 62 dBA |
Filter Type | Washable | Included | Heater, Mounting Hardware, Precharged Line Set, Remote Control, Self-diagnostic tools |
Line Set Length (Ft.) | 35 ft x 66 ft x 66 ft | Mini Split Features | Fan only option, Mobile App, Multi-zone compatible, Sleep setting, Timer |
Minimum Outdoor Temperature (F) | 5 degrees F | Mount Location | Wall Mount |
Number of cool settings | 4 | Number of Fan Speeds | Variable |
Number of Tons | 4 ton | Pack Size | 1 |
Power Options | Hardwired | Refrigerant Compatibility | R-410A |
Remote Access | Remote Access | Requires Hub? | No Hub Required |
Returnable | 90-Day | Smart Home | Smart Home Enabled |
Smart Home Protocol | Wi-Fi | Voice Control Hub Required | No Hub Required for Voice Control |
Voltage (v) | 208/230v | Wattage (watts) | Not Measured |
Works With | Alexa, Alexa, Google, Google Assistant | Zone Capacity | 3 Zone |
Warranty / Certifications
Certifications and Listings | AHRI Certified, CSA Certified | Manufacturer Warranty | 5 year part; 7 year compressor; Limited lifetime compressor |
|---|---|---|---|
Seasonal Energy Efficiency Ratio (SEER) | 20.5 |
Questions & Answers
Wire size
Good morning. The 36k MRCOOL® DIY 3-Zone system uses a 10 AWG copper wire for the main power supply. Always confirm with the installation manual and follow local electrical codes for final setup. For further details, please visit our website at https://mrcool.com/!
Can you wall mount the 48K condenser unit
While the wall mount may support up to 440 pounds, MRCOOL® does not recommend wall-mounting the 48K DIY® condenser. Its size, weight, and required clearances for airflow and servicing make a ground-level installation—on a concrete pad or stand—the best and safest option for long-term performance and warranty compliance. For further details, please visit our website at https://mrcool.com/!
What size BTU I need for 10x10 room?
Good morning, Hazi. The best way to determine the right HVAC system size is to have a Manual J Load Calculation performed. However, you can still estimate based on factors such as square footage, insulation, ceiling height, location, and sunlight exposure. Based on your square footage alone, we might recommend one of our 9k BTU DIY® Ductless Mini-Split systems for your needs. To learn more, please visit us at https://mrcooldiy.com/!
i would like the 9K+9K+12K but this will work with 27,000 BTU ? it doesn't add uup. also, are the Width and Height for 9K and 12K different? in the spec, there is only 1 value of height ~14 inch.
Good morning, Quan. Great questions! The capacity numbers for the air handlers don’t add up the same way as traditional systems — it’s about load balancing, not just total BTU math. The 27k BTU condenser is designed to work with a combination like 9k+9k+12k. And to answer your second question, the 9k and 12k air handlers have the same physical dimensions, which is why you see one measurement listed in the specs. You can check out full system details at https://mrcool.com/!
How about Mrcool 36 k 3 zone 3 air handler 12k. 12k. 12k dimension of each air handler W. D.H. Thank you Or which brand name 36 k 3 zonehave small size of air handler that fit my space H .14” please
Good morning. For the MRCOOL® DIY® 12k air handlers, each indoor unit is 31.57" W x 11.69" H x 7.44". So at about 11.7 inches tall, they’ll fit under your 14” height requirement! If you’re looking for even more compact options, we recommend checking out our OuttaSight™ Ceiling Cassettes. For more information, visit https://mrcool.com/.
What is the noise level of the indoor unit?
Good morning, Paul. Thank you for your interest! Our decibel levels for our DIY® Ductless Mini-Split systems can be found in our brochure here https://mrcool.com/wp-content/dox_repo/mc-diy-4-br-en-01.pdf. For the 36k that would be 52/45/34 depending on which mode you are running.
Install 27000 btu 3 evaporator two at 9000 and one at 1200 btu . Line set 25-25-35 it won’t let me change. Why
Good morning, Rick. When purchasing the MRCOOL DIY 27,000 BTU 3-Zone Mini-Split system from retailers like Home Depot, the available line set lengths are typically predetermined bundles, such as 25 ft x 25 ft x 25 ft or 16 ft x 16 ft x 16 ft. This fixed bundling may limit customization options during the ordering process. You can find more information on our systems here at https://mrcooldiy.com/!
Home Depot, please fix the line set choices. If I chose a different combo of lengths, the website keeps changing the air handler BTUs. Per MRCOOL, a 36K condenser can have 221.5ft total length with 73.8ft max per line. Give me all the options that fit.
Hi, we apologize for the inconvenience you are experiencing with one of our retail partners. Please email us at marketing@mrcool.com with your name, address, and order information so we can try to best assist you. Mention BazaarVoice in your subject line so that the right person on our team will see the email.
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Customer Reviews
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Customers say the Mr. Cool mini-split system is generally easy to install and operates quietly, providing effective cooling even in high temperatures. Many users appreciate the independent temperature controls for multiple rooms and the overall quality of the product. However, some customers have experienced issues with unit failures and delays in customer support response, which has led to frustration. Overall, the product is well-regarded for its performance, though some users have faced challenges with parts availability and service.
Could you please email us at marketing@mrcool.com with your contact information and any service ticket numbers you’ve received? Please include BazaarVoice Review in the subject line so I can locate your case quickly and make sure it gets the attention it deserves. We value your feedback and would like the opportunity to make this right.
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