MRCOOL | DIY 4th Gen Multi-Zone Ductless Mini-Split Heat Pump - 2 Zone - 48K BTU Condenser

Air Handler Combinations (AH #1 + AH #2): 18K + 24K
AH #1's Line set (pre-charged): 16 Ft.
AH #2's Line set (pre-charged): 16 Ft.
Sale price$5,237.00Free shipping & *No tax (*except Washington)
In stock

For custom requirements, please contact us through live chat or call us. 

For information regarding Processing & Shipping time, please refer to the "Shipping" Tab below this description.

The DIY 4th Gen Multi-zone Mini-Split MRCOOL kits have everything you need to get started, from condensation drains to templates to air handler wall bracket bracketing.

Space Coverage:

  • 9K Air Handler covers 375 sq. ft.
  • 12K Air Handler covers 500 sq. ft. 
  • 18K Air Handler covers 750 sq. ft. 
  • 24K Air Handler covers 1000 sq. ft. 
  • 36K Air Handler covers 1500 sq. ft. 

*If all indoor units (air handlers) run simultaneously, their combined BTU output will not exceed the BTU rating of the outdoor unit (condenser)*

Key Terms:

OD = Outdoor Unit (Condenser)

AH = Indoor Unit (Air Handler)

The new 4th Generation MrCool DIY 48K BTU Ductless Heat Pump Condenser can support up to 5 zones, bringing you the latest in-home comfort options.

It can reach a SEER efficiency rating of up to 20.5 when combined with select MrCool air handlers. This condenser can also continue to provide heating function when temperatures hit 5°F. With its strong Gold Fin Condenser coating, it is also built to withstand the elements and resist corrosion. 

MrCool is the only manufacturer to give a limited lifetime compressor warranty, emphasizing the high quality of this condenser. The flexibility of this heat pump to be a Do-It-Yourself project for a homeowner is its cornerstone.

The refrigerant pipe can be connected with simple hand tools and does not require the services of a certified technician when used with MrCool's proprietary Pre-Charged Quick Connect Line Set. It is pre-charged with the correct amount of R-410A refrigerant and does not require vacuuming once installed.

You can buy line sets and couplers here.

The MrCool DIY 9K BTU Ductless Wall Mounted Air Handler has a 22 SEER efficiency rating, but it can also cover an area of up to 375 square feet. While the 12K BTU Ductless Wall Mounted Air Handler can achieve a 22 SEER efficiency rating and heat and cool an area of up to 500 square feet.

Other than that, the 18K BTU Ductless Wall Mounted Air Handler can achieve an effective 22 SEER efficiency rating and deliver that performance to an area of up to 750 square feet. The 24k air handler can get a 20.5 SEER efficiency rating when linked to a MrCool condenser. It can also provide air to an area of up to 1,000 square feet.

Lastly, the 36K BTU Ductless Wall Mounted Air Handler is the most powerful air handler in the DIY series, capable of covering an area of up to 1,500 square feet. 

It is also quite adaptable, with numerous operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP. This unit can also be operated by your Apple or Android smartphone via the Smart HVAC app. Its light and small design allow it to be readily fitted to most interior walls using the provided mounting plate.

Allow the capability, performance, and simplicity of a DIY installation of the 4th Generation MrCool DIY 48K BTU Multizone Mini-split to be your sole option for heating and cooling in your home.

DIY 2-Zone Includes:

  • 48,000 BTU Multi-Zone Condenser
  • Wall Mounted Air Handlers (x2)
  • Remote Controls (x2)
  • 2x Line Sets 16ft., 25ft., 35ft., or 50ft.

    Gold Fin® condenser

    corrosion resistant - live on the coast? Don't worry, our condenser is built to resist long-term corrosion.

    Energy Efficient 

    DC Inverter technology consumes less energy and efficiently maintains energy costs.


    R-410A environmentally friendly refrigerant.

    SmartHVAC app + WIFI control 

    Control your DIY anywhere with your Apple or Android smart device and an Internet connection.

    Smart Control 

    Compatible with Amazon Alexa and Google Assistant.

    DIY Pro Cable Included

    Includes the new DIY Pro™ Cable, an added safety feature to protect the wiring from the outside elements.


    Standard 7-year compressor/5-year parts warranty, register for limited lifetime compressor warranty.


    Download Below:

    📄48K Condenser Brochure

    📄Condenser Installation and Owner's Manual

    📄Condenser Trouble Shooting Solutions Guide

    📄Wall Handler Brochure

    📄Wall Handler Installation and Owner's Manual

    📄Performance Specifications

    📄Remote Control User Manual

    📄Wall Handler Trouble Shooting Solutions Guide

    📄Warranty Information


    Watch the quick overview below:

    All orders are shipped free of charge and are not subject to *sales tax (*except for Washington state).

    We try to make the delivery process as simple as possible, and we can send your order either to your home or workplace. Unfortunately, we do not offer deliveries to PO boxes or parcel motels. Most orders ship from Kentucky.

    For a quote on express shipping rates, please feel free to reach out and we will be more than happy to help.

    Business days are Monday through Friday. Holidays, Saturdays, and Sundays are not included in shipping days.

    The time frame for order delivery is divided into two parts:

    1. Processing time: Order verification, tailoring, quality check, and packaging. All orders are sent to the warehouse for dispatch within 1 business day after the order is placed then additional business days are required to dispatch your order:

      For all accessories:
       2-4 business days on average.
      For complete or partial system: 4-7 business days on average.

    2. Shipping time: This refers to the time it takes for items to be shipped from our warehouse to the destination. Shipping transit times are not guaranteed and may vary depending on your delivery address.

      Shipping to the US:
      For all accessories: 2-4 business days on average.
      For complete or partial system: 4-7 business days on average when not delayed by the freight company.

      Shipping to Canada:
      For all accessories: 4-7 business days on average.
      For complete or partial system: 7-10 business days on average when not delayed by the freight company. 
      Orders shipping to Canada are subject to customs duties and taxes.

      Shipping to Hawaii:
      Shipping freight costs need to be determined. We will reach you with a quote and a delivery date as soon as possible.

    Tracking information is available within 1-3 days after shipping. If you received a tracking number that is not working at the time you are trying, please check again within 24 hours before contacting us as it takes time to update the system, thank you!

    Customers are responsible for providing complete and accurate shipping addresses to Cool Mini-Splits. Cool Mini-Splits is not able to make changes to your shipping address once a package leaves our warehouse, and Cool Mini-Splits is not liable for packages that are lost due to incomplete or inaccurate addresses.

    !Important: Please note that orders shipped by freight may not be able to deliver to your residential area for a number of reasons like narrow roads or delivery to apartments building above ground floor which are made to the front of the building only, not up the stairs to your door and any other reasons that may prevent your delivery. ‏‏‎

    Please note that extra costs or issues due to miss-delivery are to be managed by yourself because as much as we would love to help, we can not take responsibility to coordinate and manage certain details. ‏‏‎

    It will be your responsibility to arrange delivery to avoid any problems or returns. If a failed delivery attempt occurs, you'll need to pick it up yourself at the shipping facility or arrange a point of meeting.

    All orders reported as "Delivered" by freight companies are considered delivered. Cool Mini-Splits cannot be made liable for non-delivery in this case.

    If a delivery fails for any reason and the address the order was sent to, was the correct address as provided by the customer, Cool Mini-Splits cannot be held liable if a package is returned to our warehouse.

    The order placed by the customer on our website is the order Cool Mini-Splits will ship to the customer. We cannot be held liable for the customer receiving the wrong item if they placed the wrong order.

    Equipment Arrival

    Shipping transit times are not guaranteed and may vary depending on your delivery address. Once your order arrives, make sure to inspect each and every item on the pallet. Count the number of items (boxes) on the shipment. Make sure that your count matches the count printed on the delivery receipt before signing for your delivery.

    Missing items or incorrect items that were noted on the delivery receipt must be reported within 24 hours of receiving your order by contacting our customer service department. We reserve the right to reject any claim for missing items if not reported within the twenty-four-hour period.

    After taking count of the pieces on your shipment, remove wrapping or boxes and inspect each item of equipment thoroughly in the front of the driver. Do not sign the delivery receipt until you have thoroughly inspected each item. Check all of the equipment to make sure it is not dented or badly scratched. Make sure to mark the delivery receipt clear, short, wrap broken, or damaged after inspecting your shipment thoroughly.

    Making Notes on the Delivery Receipt

    If the number of items noted on the delivery receipt matches what you have received and none of the items have been damaged. Accept your delivery, sign, and Mark the Receipt Clear.

    Please note: The customer is responsible to check and assure that the products being received are clear of damages and/or shortages.

    If the items or boxes on the shipment do not match the number listed on the delivery receipt. Mark the Receipt Short (a packing slip will be attached to the freight shipment for your reference) Make sure to note on the delivery receipt which items are missing. We will work with the carrier to track the missing items, please allow up to 7 business days for the freight carrier to locate your items. Please allow the appropriate time for the Freight Carrier to locate the missing items notated short on the delivery receipt. If the freight carrier is not able to locate the missing items, we will ship those items via standard ground shipping to you at no charge if the receipt was noted short and the items that are missing are noted on the delivery receipt.

    If the shrink wrap is torn or has been replaced during transit; Mark the Receipt Wrap Broken.

    Any orders that are rejected by the customer for any reason other than damage in shipment or wrong items shipped must pay return shipping cost.

    Order cancelation
    Only available during EST business hours and outside business hours you can always notify us at any time. Should you decide to cancel, please do so as early as possible to allow time for the cancelation process. We accept cancellations until Friday early mornings at the latest because it must be processed by our office HQ.

    For all accessories: No restocking fee. We only accepts returns for unopened merchandise if customers decide to not use it.

    For partial or full system: Shipping cost + 15% restocking fee will additionally be charged as soon as the order leaves the warehouse or for any refused product, damaged, returned, late cancellation or otherwise. Furthermore, MRCOOL only accepts returns for unopened merchandise if customers decide to not use it.

    Since April 2020, there are no fees to refund a charge, but the fees from the original charge aren't returned so a 3% fee applies and will be deducted from your refund. In the case that the refund is due to a mistake from our side or defective items, we won't charge you any fees.

    In the rare case that a product becomes faulty or a buyer receives a product with defects, buyers are entitled to request a product replacement within 30 days of receiving the item. To request a replacement, buyers are required to provide photo/video evidence of the product's manufacturing defects via email

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    Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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