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MRCOOL - DIY 5th Generation - 18,000 BTU 3-Zone Mini Split AC and Heat Pump with Ceiling Cassettes - SEER2 24 - (6K + 6K + 9K) - 230V

by MRCOOL
SKU DIYM318060609-16-16-16-CC
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$6,270.00
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Upgrade home comfort with the MRCOOL DIY 5th Gen Multi-Zone 18,000 BTU 3-Zone Ductless Mini-Split System with ceiling cassettes. This ductless heat pump system delivers efficient heating and cooling for up to three rooms. It supports flexible ceiling cassette sizes of 6K, 9K, or 12K BTU for custom comfort. The DIY mini split design allows fast installation without special tools or HVAC training. Pre-charged Quick Connect line sets remove the need for vacuuming or refrigerant handling. Low-profile ceiling cassettes install discreetly between standard joists and keep walls completely clear. This design improves room layout while delivering strong, even airflow from above. Each zone works independently, letting you control temperatures room by room. The system runs quietly, making it ideal for bedrooms, offices, and living spaces. As a heat pump, it cools in summer and pulls heat from outdoor air in winter. Smart controls allow easy operation using the MRCOOL SmartHVAC app or voice assistants. Energy-efficient performance helps reduce monthly energy costs while maintaining steady comfort. Easy-access filters simplify maintenance and save time. This MRCOOL DIY multi-zone mini split system is ideal for homeowners wanting clean design, lower installation costs, and reliable year-round comfort.

What’s Included

  • (1) 18K BTU 5th Gen Multi-Zone DIY Condenser
  • (3) Ceiling Cassette Air Handlers (size varies by configuration)
  • (3) Remotes
  • Full Installation accessories

Features

  • 18,000 BTU condenser supports up to 3 zones
  • Pairs with 6K–12K BTU ceiling cassette air handlers
  • True DIY® installation with quick-connect lines
  • Ultra-slim ceiling cassette design for flush mounting
  • SEER2 rating up to 22.3 for high energy efficiency
  • Individual zone control via smartphone or voice
  • Whisper-quiet operation and automatic swing functionality
  • Gold Fin® corrosion-resistant technology

Specifications

BRAND NAME MRCOOL
SERIES
DIY 5th gen Multi-Zone Mini-splits
MODEL
DIY-MULTI3-18HP230D-O
GTIN 840255587617
UPC 840255587617
SEER2 23.9
EER2 13
HSPF2-4 10
HSPF2-5 7.8
TONNAGE 1.5
COOLING CAPACITY (BTU) 18000
HEATING CAPACITY (BTU) 18000
VOLTAGE (V) 208/230
PHASE 1
CYCLE 60
MAX FUSE BREAKER (A) 20
MIN CIRCUIT AMPACITY (A) 16
COLOR White
ZONE CAPACITY 3
REFRIGERANT TYPE R-454B
REFRIGERANT VOLUME (OZ) 61.73
DECIBEL RATING (DBA) 60
INVERTER DC
LINE SET LENGTH 25
MAX LINESET LENGTH (FT) 172.2
LIQUID LINE SIZE 1/4
SUCTION LINE SIZE 3/8
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
BASE COMPRESSOR WARRANTY 7
HAS BATTERIES Yes
CONTAINS ELECTRONICS Yes
CONTAINS CHEMICALS Yes
CONTAINS AEROSOL Yes
CONTAINS COMPRESSED GAS Yes
PROPOSITION 65 WARNING Yes
NET DEPTH (IN) 13.46
NET HEIGHT (IN) 26.5
NET WIDTH (IN) 35.04
NET WEIGHT (LBS) 101.63
GROSS DEPTH (IN) 17.24
GROSS HEIGHT (IN) 29.53
GROSS WIDTH (IN) 40.55
GROSS WEIGHT (LBS) 109.57

Owner's Manual

All MRCOOL non DIY products are to be installed in accordance with the manufacturer's installation methods and recommendations by a licensed HVAC-R/electrical/plumbing technician, as required. Failure to do so, may result in voiding the manufacturer's warranty.”

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