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MRCOOL DIY Multi-Zone 2-Zone 18K BTU, 21 SEER Condenser | 4th Gen Series | DIY-MULTI2-18HP230C

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(415) 503-9177

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The 4th Generation MRCOOL DIY 18K BTU 2-Zone Ductless Heat Pump Condenser is the latest in heat pump technology. This 2-zone condenser, when paired with select MRCOOL air handlers, is capable of producing an impressive 21 SEER efficiency rating. It also has the ability to heat even when temperatures drop to -13°F. It features robust construction which includes a Gold Fin Condenser coating so it is sure to withstand exposure to the elements. For added peace of mind, this is the only condenser on the market that comes with a limited lifetime compressor warranty. As a MRCOOL DIY product, this heat pump is designed specifically to be used with MRCOOLs patented Pre-Charged Quick Connect Line Sets. These line sets come pre-charged with the precise amount of R-410A refrigerant. They are also equipped with quick connectors, so the line set can be connected to the condenser by the homeowner using only wrenches. This means the installation process can be performed without retaining the services of a certified technician. Let the 4th Generation MRCOOL DIY 18K BTU 2-Zone Ductless Heat Pump Condenser be the solution to your homes heating and cooling needs.


  • Up to 21 SEER
  • Gold Fin condenser: corrosion resistant - live on the coast? Don't worry, our condenser is built to resist long term corrosion
  • Energy Efficient DC Inverter
  • R-410A environmentally friendly refrigerant
  • Standard 7-year compressor/5-year parts warranty; register for limited lifetime compressor warranty
  • Line sizes 1/4", 1/2" & 3/8", 5/8"
  • Multi-Zone Condenser includes adapter for the 24K Air Handler (3/8", 5/8" Line Size) - see liquid line and suction line size columns


    Weight 100.53 lbs
    SEER 21
    EER 12.5
    HSPF hspf4/hspf5 : 10.6/8.6
    CFM 1764.71
    Cooling Capacity 18000 BTU
    Heating Capacity 19000 BTU
    Voltage 208-230 V
    Phase 1
    Cycle 60 Hz
    Max Fuse Breaker 25 A
    Min Circuit Capacity 18 A
    Color White
    Color Family White
    Zone Capacity 2
    Refrigerant Type R-410A
    Refrigerant Volume 65.26 oz
    Decibal Rating 59 dBA
    Inverter Yes
    Min Ambient Cool 5F ~ 122F
    Min Ambient Heat -13F ~ 75.2F
    Max Lineset Length 123 ft TOTAL
    Liquid Line Size 1/4in
    Suction Line Size 1/2in
    Compressor Motor Type Twin - Rotary
    Condenser Fan Motor RPM 750/600/500
    WiFi Compatibility Yes
    App Compatibility Yes
    Works with IOS Yes
    Works with Android Yes
    Registered Warranty Limited Lifetime Compressor
    Base Warranty 5-year Parts/7-year Compressor
    Base Parts Warranty 5-year Parts
    Registered Compressor Warranty Limited Lifetime Compressor
    Base Compressor Warranty 7-year Compressor
    Contains Electronics Yes
    Contains Chemicals Yes
    Contains Aerosol Yes
    Contains Compressed Gas Yes
    Proposition 65 Warning Yes
    Gross Depth 17.64 in
    Gross Height 29.33 in
    Gross Width 40.94 in
    Gross Weight 111.11 lbs


  • Brochure
  • Install Manual
  • Specs
  • Owner Manual
  • Remote Manual
  • Technician Manual
  • Warranty Doc


  • AHRI Certificate
  • Energy Guide Certificates

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