1. Home
  3. MRCOOL DIY Mini Split - 39,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-436HP09090912

Pre-Order the new 5th Gen Series!

MRCOOL DIY Mini Split - 39,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-436HP09090912

4.9 58 reviews
Model: DIY-B-436HP09090912
$5,609.80
$5,609.80 $7,012.25
-20%
Shipping calculated at checkout.

Buy Now, Pay Later

Mount type: Wall

Choose your Line Set and Communication Wires:

Total Price: $5,609.80

Currently Out of Stock - Contact us for an ETA. Pre-Order Today!

$5,609.80
$5,609.80 $7,012.25

Product Overview

  • Zones: 4

  • DIY Installation

  • Voltage: 208-230V

  • Outdoor Operating Temp (Cool): 5°F to 122°F

  • Outdoor Operating Temp (Heat): -13°F to 75.2°F

What's Included

System also includes Communication Wires, Drain Hose Pipes, Wall Sleeves, Remote Controls and Wifi Dongles. This system DOES NOT include Line Sets. Don't forget to scroll up and add them!

*Note: If all air handlers are run simultaneously, their combined BTU output will not exceed the BTU rating of the condenser.

System Details

DESCRIPTION

Step into the future of comfort with MRCOOL’s innovative 4th Gen DIY Mini Split, trusted by thousands of satisfied customers! Experience unmatched climate control across your rooms, all with effortless convenience. Perfect for your home, garage, workshop, and beyond. The best part? You can handle the installation yourself!

Condenser (36K BTU)

  • Innovative Installation: Experience seamless installation with MRCOOL’s patented Pre-Charged Quick Connect Line Sets, ensuring a hassle-free process without needing a technician.
  • Corrosion Resistance: Shield your system from coastal elements with the robust Gold Fin® condenser coating.
  • Energy Efficiency: Save on energy with an impressive 21.5 SEER2 and 8.5 HSPF-5 rating.
  • Extreme Performance: Heat efficiently even when temperatures plunge to -13°F.
  • Reliable Warranty: Enjoy peace of mind with a 7-year compressor warranty and a 5-year parts warranty.

Air Handler (9K BTU)

  • Versatile Climate Control: Whether you're in the mood for COOL, HEAT, AUTO, DRY, or SLEEP, these Air Handlers ensure comfort year-round.
  • Perfect Room Coverage: Optimized for spaces ranging from 180 to 375 square feet, perfect for smaller spaces and cozy corners.
  • Smart Control Anywhere: Take command with SmartHVAC app compatibility, offering fingertip convenience from anywhere on the planet.
  • Effortless Installation: The compact and lightweight design makes mounting quick and simple, minimizing installation efforts.
  • Quick Connect System: With MRCOOL’s Pre-Charged Quick Connect Line Set, you can set up easily—no vacuuming or complex tools required!

Air Handler (12K BTU)

  • Versatile Climate Control: Enjoy personalized comfort with COOL, HEAT, AUTO, DRY, or SLEEP modes to suit any season or preference.
  • Perfect Room Coverage: Tailored for areas ranging from 376 to 500 square feet, ideal for medium-sized spaces.
  • Smart Control Anywhere: Take advantage of SmartHVAC app compatibility, giving you complete control remotely.
  • Effortless Installation: A compact and lightweight design allows for hassle-free mounting and setup.
  • Quick Connect System: Thanks to the MRCOOL Pre-Charged Quick Connect Line Set, installation is incredibly simple—no professional vacuuming needed!

ELECTRICAL REQUIREMENTS

  • Model: DIY-MULTI4-36HP230C
  • Type: 36K BTU Condenser
  • BTU: 36,000 BTU
  • Power Supply: 208-230V/60 Hz/1ph
  • Minimum Circuit (Disconnect): 27.0 A
  • Maximum Fuse (Breaker): 45.0 A

SPECIFICATIONS & DIMENSIONS

  • Condenser
  • Product Dimensions: 37.24"W x 16.14"D x 31.89"H
  • Cooling Capacity: 36,000 BTU
  • Heating Capacity: 36,000 BTU
  • Zone Capacity: 4
  • Cool Mode - Outdoor Operating Temperature Range: 5F ~ 122F
  • Heat Mode - Outdoor Operating Temperature Range: -13F ~ 75.2F
  • SEER: 21.5
  • EER: 10.5
  • Voltage: Requires a minimum of 208V-230V/60HZ/27-45A (please check your home meets this electrical requirement prior to purchase)
  • Registered Warranty: 7 Years Replacement on Compressor, 5 Years Parts
  • Air Handler 9K BTU
  • Product Dimensions: 31.57"W x 7.44"D x 11.69"H
  • Mount Type: Wall
  • Cooling Capacity: 9,000 BTU
  • Heating Capacity: 9,000 BTU
  • Registered Warranty: 5 Years Parts
  • Modes: Auto - auto selects from Cool, Heat or Fan-Only // Dry - dehumidify // Cool // Heat // Fan Only // Quiet // Sleep
  • Air Handler 12K BTU
  • Product Dimensions: 31.57"W x 7.44"D x 11.69"H
  • Mount Type: Wall
  • Cooling Capacity: 12,000 BTU
  • Heating Capacity: 12,000 BTU
  • Registered Warranty: 5 Years Parts
  • Modes: Auto - auto selects from Cool, Heat or Fan-Only // Dry - dehumidify // Cool // Heat // Fan Only // Quiet // Sleep

WHAT'S INCLUDED

INSTALLATION & GUIDES

COVERAGE AREA

Please refer to this coverage chart to determine how many BTUs are required for the area you would like to cool or heat.

BTU  Square Feet
9,000 BTU 180 - 375 Sq Ft.
12,000 BTU 376 - 500 Sq Ft.
18,000 BTU 501 - 750 Sq Ft.
24,000 BTU 751 - 1,000 Sq Ft.
36,000 BTU 1,001 - 1,500 Sq Ft.

Some additional factors may impact performance such as insulation, ceiling height and the number of appliances in the room. For assistance, contact our Product Experts.

SHIPPING POLICY

Free Curbside Delivery
MRCOOL orders include free curbside delivery via FedEx Ground, FedEx Freight, or the most trusted carrier available. Please note that delivery is to the curbside only - be sure to arrange for assistance if needed, as the carrier will not bring items inside your home.

Tracking & Delivery Scheduling
In most cases, you will receive tracking details 3-5 business days after you place your order. When the tracking number is sent, please allow 1-2 business days for the tracking number to populate details.

See our full Shipping Policy here.

RETURN POLICY

MRCOOL returns must be requested within 30 days of your delivery date. We are unable to process returns submitted after this period. Products must be unused, uninstalled, and in their original packaging, including the box and pallet, to qualify for a return.

Restocking Fee
Please note, a 35% restocking fee will be applied to all approved returns.

Non-Returnable Items
Accessories including lineguards, wall mounts, linesets, couplers, and similar items are not eligible for return.

See our full Return Policy here.

Accessories

Looking for a different size?

Use our custom builder to find your perfect mini split system.

Build Your System
See more from MRCOOL

Customer Reviews

Based on 58 reviews
91%
(53)
7%
(4)
0%
(0)
2%
(1)
0%
(0)
100.0
100.0
J
Julianne Panagacos
Sleek, Classy Ceiling Cassettes

The ceiling cassettes really deliver with space saving and a sleek, classy design. They even work well in 100+ year old lath and plaster ceiling as pictured here. Still getting the hang of the controls and waiting to see what its like in different temperatures but initial installation and operation is great.

User picture
J
Jeff Frederick
Dual or multiple zone

Two ceiling handlers with 18K condenser works perfectly. I had an issue where the system was not working properly from room to room and I could not identify the issue. After contacting tech support and testing and rechecking everything, the problem was electrical was backwards from the refrigeration lines (A & B reversed). I originally did not identify A & B on the refrigerant lines running to the condenser. Once I switched electrical A and B, all worked as it should.

User picture User picture User picture User picture
A
Abdel Benghanem

Great for cooling so far I have not use it for heat yet waiti for winter season .

User picture User picture User picture
T
Taylor Hodges
Perfect Fit for Gym

We were super happy with the system that we got. Easy to install and works very efficiently!

User picture
S
S.F.
Best unit EVER!

I have had an amazing time after setting up this unit it works wonders, I personally mounted it to the back of my travel trailer and it is amazing!

User picture
123