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Free Shipping To Lower 48 USA and No Sales Tax

MRCOOL DIY 4th Gen 5-Zone

Original price $5,770.00 - Original price $8,708.00
Original price
$5,770.00 - $8,708.00
Current price $5,770.00

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


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

It's here! The 4th Generation MrCool DIY 48K BTU 5-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 5-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.

NEW - Choose Between Wall Mounted or Ceiling Cassette Air Handlers

Choose the classic wall-mounted air handler or the brand-new CEILING CASSETTE, or mix and match.

The Ceiling Cassette offers a low-profile heating and cooling option to discreetly fit any space. Designed to work with current and future joist standards, it can be recessed between all types of joists on a 16-inch center - including pre-manufactured I-joists. Perfect for retrofits or new construction, the low-profile installation will remain out of sight while delivering the efficient heating and cooling you’ve come to expect from MRCOOL®.

Contact us for help customizing your order with the right air handlers and line sets to fit your needs. The MRCOOL DIY system is customizable.

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 5-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 5-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 5-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 5-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 5-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.

t sound and the LED lit display will turn off. Should the unfortunate event of a power outage occur, the MrCool system will automatically shut off and then back on with the same settings once power returns.

Easily maintain your MRCOOL DIY Multi-Zone 48,000 BTU 21 SEER Five-Zone Ductless Heat Pump Split Air Conditioner Unit with alerts and reminders. Any troubleshooting codes will appear on the front display and the user manual contains an index for common codes. Air filter cleaning alerts are automatic, and you can easily keep the minimal indoor units clean with a dry or damp cloth.


  • 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


                                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"

                                      NEW WARRANTY

                                      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.

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