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Free Shipping on most orders over $175 | Sales Tax in NJ only
Free Shipping on most orders over $175 | Sales Tax in NJ only

MRCOOL 5 Zone 55K BTU (6K+6K+9K+12K+18K) 22 SEER2 Ductless Heat Pump DIY 5th Gen

by MRCOOL
Original price $6,875.00 - Original price $6,875.00
Original price
$6,875.00
$6,875.00 - $6,875.00
Current price $6,875.00

Many other BTU combinations are available. Contact us at (973) 206-7590 for special requests.

Line sets not included in pricing. Purchase separately below.

🌿 Free shipping on U.S. orders $175+, unless noted above

🌿 Canada, AK & HI: Add'l shipping charges

🌿 Price match guarantee, details here

Energy Rebates & Bulk Pricing Available

SAVE BIG! Contact us for Bulk Pricing and Rebate Eligibility, or call us at (973) 206-7590.

Cash Payment Discounts & Financing Options

Get an additional 3% off when you pay by ACH, Money, or Zelle. Select your option at check out.

We accept all major credit cards, crypto and Paypal 0% credit plans. More details here.

Full Manufacturer’s Warranty

You buy it, we back it! Your purchase is fully covered with a manufacturer’s warranty. More details here.

Control five rooms independently with efficient zoning, quiet comfort, and an easy install that skips costly HVAC labor.

The MRCOOL DIY Multi-Zone 55,000 BTU Ductless Mini-Split Air Conditioner and Heat Pump gives you flexible heating and cooling across five zones—without needing an HVAC contractor. With air handlers in two 6K units (200 sq ft each), one 9K unit (400sq ft), one 12K unit (550 sq ft), and one 18K unit (800 sq ft), this system is ideal for grow rooms, homes, rentals, or office setups that need total room-by-room control. With built-in smart control, high efficiency, and powerful zone coverage, this setup does the job right.

Note: Pricing doesn't include the Line Sets. Available to purchase separately

Coverage Area

Please refer to this coverage chart to determine the required BTUs for the area you wish to cool or heat.

  • Square Feet: Up to 400 | BTU = 9K
  • Square Feet: Up to 550 | BTU = 12K
  • Square Feet: Up to 800 | BTU = 18K
  • Square Feet: Up to 1050 | BTU = 24K
  • Square Feet: Up to 1550 | BTU = 36K

Note about condenser sizes versus total air handler capacity: The total capacity of the combined air handlers may exceed the capacity of the condenser in certain configurations. While this provides more flexibility in your setup, you will need to either shut off one of your air handlers (zones) or reduce the output of all zones.

Features

  • Easy DIY Installation
  • Simple to Use
  • Multi-room Comfort
  • Energy Efficient DC Inverter
  • 100% Sealed System
  • Gold Fin Condenser
  • Eco Safe R-454B Refrigerant
  • Smartphone App Controls
  • Lifetime Technical Support
  • Follow Me Feature
  • Low Ambient Cooling

What's Included?

  • 1 x MRCOOL 55k DIY 5th Generation 5 Zone Multi-Zone Mini-Split Condenser 230v
  • 2 x MRCOOL 6k DIY 5th Generation Mini-Split Air Handler 230v
  • 1 x MRCOOL 9k DIY 5th Generation Mini-Split Air Handler 230v
  • 1 x MRCOOL 12k DIY 5th Generation Mini-Split Air Handler 230v
  • 1 x MRCOOL 18k DIY 5th Generation Mini-Split Air Handler 230v

Download Resources

Specifications

SKU: DIYM5550606091218

SEER2: 22

EER2: 12

HSPF2-4: 10.6

HSPF2-5: 8.5

Tonnage: 4.6

Cooling Capacity (BTU): 47,000

Heating Capacity (BTU): 55,000

Voltage (V): 208/230

Phase: 1

Cycle: 60

Max Fuse Breaker (A): 45

Min Circuit Ampacity (A): 43

Color: White

Zone Capacity: 6

Refrigerant Type: R-454B

Refrigerant Volume (oz): 151.68

Decibel Rating (dBA): 64

Inverter: DC

Line Set Length: 25 ft

Max Line Set Length (ft): 221.4

Liquid Line Size: 1/4

Suction Line Size: (3/8 x4), (1/2 x2)

Compressor Motor Type: Rotary

Auxiliary Heater Included: No

Auxiliary Heater Available: No

Fan Only Option: Yes

Quiet Mode: Yes

Auto Cool: Yes

WiFi Compatibility: Yes

App Compatibility: Yes

Works with iOS: Yes

Works with Android: Yes

UL Listed: Yes

ETL Listed: Yes

Energy Star Certified: Yes

AHRI Certified: Yes

Registered Warranty: Extended Limited Lifetime*

Base Parts Warranty: 5 years

Base Compressor Warranty: 7 years

Has Batteries: Yes

Contains Electronics: Yes

Contains Chemicals: Yes

Contains Aerosol: Yes

Contains Compressed Gas: Yes

Proposition 65 Warning: Yes

Net Depth (in): 16.34

Net Height (in): 52.48

Net Width (in): 37.48

Net Weight (lbs): 245.81

Gross Depth (in): 19.49

Gross Height (in): 58.27

Gross Width (in): 43.11

Gross Weight (lbs): 267.46

Grow Light Central expert advice for indoor growing equipment

Who should use this mini split and heat pump?

  • Multi zone growers need separate climates across five rooms for tight VPD
  • DIY installers want precharged lines and quick connects without vac pumps
  • Energy savers value 22 SEER2 with inverter efficiency
  • Year round operators need heat and cool in one system
  • Mixed loads match 6K 6K 9K 12K 18K to real room sizes

Best applications

  • Flower tents hold steady leaf temps for consistent VPD
  • Veg and mothers keep gentle temps while lights run long
  • Dry and cure keep slow even temps while dehus manage RH
  • Zoned set points run different targets per room without hot spots
  • No ducts needed for clean retrofits in finished spaces

Why Shop with Grow Light Central?

“There’s a crapload of equipment providers out there. What makes Grow Light Central so special?”

“There’s a crapload of equipment providers out there. What makes Grow Light Central so special?”

Grow Light Central is a grow equipment solution provider connecting you to 100+ brands and 60+ suppliers trusted and used in the best grow facilities across the country.

Anthony, the owner and operator, personally ensures every order is handled right. No passing you off, no runaround, just the expert service and advice you deserve.

FAQs