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MRCOOL DIY 48k BTU 4th Gen 5-Zone Heat Pump Split System w/ 9k+9k+9k+9k+12k Air Handlers

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local_shippingEstimated to arrive Aug 20 - Aug 25
MRCOOL DIY 48k BTU 4th Gen 5-Zone Heat Pump Split System w/ 9k+9k+9k+9k+12k Air Handlers

The MRCOOL DIY 48k BTU Condensers will be launching end of Summer (August). Pre-order open!

All other components are in stock.

Short ship option available for systems that include a 48k BTU condenser. Get your order shipped with all in-stock components first, so that you may start your installation. We will follow up with the 48k BTU condenser once it arrives. No additional cost.

If you would like to short ship, please write "short ship" in special instructions box at checkout.

Contact us with any questions.

MRCOOL DIY Multi-Zone 4th Generation 48K BTU Three Zone Ductless Mini Split - A Heating and AC System You Can Install By Yourself!

It's here! The 4th Generation MrCool DIY 48K BTU 2-Zone Ductless Heat Pump offers the latest in heat pump innovation. This condenser can support up to FIVE zones and, when paired with select MrCool air handlers, can provide a SEER efficiency rating of up to 20.5. It even can provide heat when temperatures drop to -5°F.

Easily install your new MrCool DIY 48k BTU 21 SEER 2-Zone Ductless Heat Pump Split System - 9k+9k+9k+9k+12k and enjoy the ability to heat or cool three zones anywhere. Since the DIY Multi-Zone is a heat pump, you get significant cooling and heating without breaking the bank or hurting the environment.

The outdoor heat pump unit is capable of heating up to 48,000 BTU

The 9,000 BTU air handler can distribute heated or cooled air in a room of up to approximately 350 square feet.

The 12,000 BTU air handlers can distribute heated or cooled air in a room of up to approximately 500 square feet.

Benefits of the MRCOOL DIY Ductless 5 Zone Mini Split System

MrCool stands behind the quality & durability of this condenser by being the only manufacturer to offer a limited lifetime compressor warranty. However, the most innovative feature is that the homeowner can install it without the use of a certified technician. Installing the MrCool DIY 48k BTU 21 SEER 2-Zone Ductless Heat Pump Split System - 9k+9k+9k+9k+12k does not require any difficult training or special tools. All you need is a basic technical ability to install.

This is possible because the condenser is intended to be used with MrCool’s patented Pre-Charged Quick Connect Line Sets.

These line sets are precharged with R-410A refrigerant and feature quick-connect connectors which allow them to be connected using only wrenches. Because it is pre-charged, the system will not require vacuuming once the installation is complete. The Quick Connect line set is a special pre-charged line that greatly simplifies installation. It allows anyone to complete installation in no time.

The 4th Generation MrCool DIY 48K BTU 5-Zone Ductless Heat Pump is one of the best options on the market for multi-zone comfort.

Features of the 4th Generation Ductless DIY Mini Split System

The MrCool DIY 48k BTU 21 SEER 2-Zone Ductless Heat Pump Split System - 9k+9k+9k+9k+12k can heat, cool, and dry.

The easy-to-read LED display on the front of each air handler allows you to easily check the temperature of your space. You can also monitor your MrCool system using the Smart Controller mobile app (available for iOS and Android devices). Even better, you can control the unit wirelessly in three different ways - with the included remote, the MrCool Smart Controller app, or an Amazon Alexa or Google Assistant.

Both MrCool air handlers are included in this MrCool DIY 48k BTU 21 SEER 2-Zone Ductless Heat Pump Split System - 9k+9k+9k+9k+12k evenly distribute heated or cooled air via their directional louvers, so you can stay comfortable 24/7.

Save money while you sleep using sleep mode. Once activated, the unit moderates room temperature in eight-hour increments. In each of the first two hours in that window, the appliance will drop while heating or rise while cooling by 2°F. For the next six hours, this more moderate temperature will keep you comfortable and reduce energy costs and usage.

In auto mode, you set each indoor unit to your desired temperature and let the system handle the rest. The MrCool DIY system will determine how much-heated air or air conditioning you need to stay at your desired comfort level. If you require forced cooling to test the unit’s air conditioning ability or perform maintenance tasks this MrCool DIY System can be set to a manual mode, also called emergency operation mode. Push the button on the right side of the air handler under its front panel to initiate this type of operation.

Enjoy these additional options of this MrCool DIY 48k BTU 21 SEER 2-Zone Ductless Heat Pump Split System - 9k+9k+9k+9k+12k that gives you extra control of your home’s comfort level. Use the timer to limit energy usage and save money on your next bill. Easily read the alerts on the LED display on the front of each air handler. Examples of alerts include low refrigerant and reminders to clean or replace the unit’s filter.

You can mute the air handlers if you want an interruption-free atmosphere. Mute your system to deactivate the LED display and audible alerts. During a blackout or power outage, you can trust this split system to automatically return to operation with the same settings once power returns.

Maintenance is easy with this MrCool DIY 48k BTU 21 SEER 2-Zone Ductless Heat Pump Split System - 9k+9k+9k+9k+12k Clean the filters simply by removing them, cleaning them with cool water, and allowing them to dry. To keep the exterior of each indoor and outdoor unit clean, simply wipe it down with a dry or damp cloth. Also, be sure to keep trash and debris clear of the exterior condenser.


  • Kink Resistant
  • Easy DIY® Installation
  • Pre-charged DIY®
  • New DIYPRO™ Cable
  • No Vacuum Needed
  • Leak-Proof
  • Quick Connect Line Set
  • Simple to Use
  • Multi-room Comfort
  • Energy Efficient DC Inverter
  • 100% Sealed System
  • Gold Fin® Condenser
  • Eco-Safe R-410A Refrigerant
  • Smartphone App Controls
  • Lifetime Technical Support
  • Follow Me® Feature
  • Low Ambient Cooling

Contact Us For Your Specific Multi-Zone Needs

Not the exact match-up you need? We have two condenser options, four air handler options, and multiple lines set length options that can be mixed and matched to fit your needs. Call or text us at 844-247-7262, email us, or live chat with us.


Limited Lifetime* | 7 Year Compressor* & 5 Year Parts 4th Gen DIY®s have an optional LIMITED LIFETIME compressor warranty*, a 7-year compressor replacement* warranty, and a standard 5-year parts warranty for the original registered owner. Contact us for more info.


    48K 5-Zone Heat Pump Condenser (Outdoor Unit)

    Maximum # of Zones 5
    Power Supply 208-230/60/1
    SEER  20.5
    Dimensions (WxDxH) 37.48 x 16.34 x 52.48
    Weight 222.89 lbs
    Min. Circuit - Disconnect (A) 40
    Max. Fuse-Breaker (A) 60

    9k Air Handler (Indoor Unit)

     Power Supply
    208-230~60, 1
    Dimension (WxDxH)
    31.57 x 7.44 x 11.69
    19.18 lbs
    Piping Size Liquidside/Gasside
    1/4"- 1/2"

    12k Air Handler (Indoor Unit)

     Power Supply
    208-230~60, 1
    Dimension (WxDxH)
    31.57 x 7.44 x 11.69
    23.6 lbs
    Piping Size Liquidside/Garside
    1/4"- 1/2"

      In stock items: Products typically ship within 2-3 business days from when you place your order (Please allow 5-7 business days for some MRCOOL products to ship). Due to COVID-19 please allow 7 - 10 days for your order to arrive once you have received shipping confirmation.

      Pre-order/Out of stock items: Contact us for estimated shipping timeline. We are experiencing inventory and re-stocking delays due to port congestion. We appreciate your patience and understanding.

      High order volume due to COVID-19 may occasionally slow delivery for some items and you may experience extended wait times contacting our Customer Service team.

      For the fastest service and online support, please email us at for information regarding your order.

      Read the rest of our shipping policy here.

      $6,321.00 $7,585.00

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