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Internet # 310337739

Model # RHDZ-27-9/18WM

Store SKU # 1005172319

27000 BTU 2.25 Ton Dual Wall Mount Ductless Mini Split Air Conditioner with Heat Pump 220-Volt

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Product Details

About This Product

The RHDZ-27-9/18WM is sold with (1) 9000 BTU & (1) 18000 BTU wall mount indoor units. The 27000 BTU outdoor unit can handle up to 3 indoor units total, depending on type and capacity, which do not need to all be installed at once. A perfect solution for residential and commercial applications, this multizone mini split system can climate control multiple indoor areas with one consolidated 220-230V outdoor unit powering the entire system. You can mix and match evaporator styles - wall mount, ceiling cassette, concealed duct, universal floor/ceiling and mini floor consoles to create a unique heating and cooling system. (For a custom-configured system featuring more or different indoor units, please contact customer support on how to order.) Featuring industry-leading energy efficiency, these systems offer up to 22.5 SEER using inverter control technology with variable speed heat pump compressors. All systems feature pre-flared pre-flanged insulated copper line sets for each indoor unit, efficient cooling and heating down to -13 degrees fahrenheit, automatic operation, intelligent pre-heat/defrost, sleep mode/timer, remote control for each indoor unit and more.


  • This model (RHDZ-27-9/18WM) is sold with (1) 9000 BTU &(1) 18000 BTU wall mount indoor units w/ wireless digital remotes, (1) 27000 BTU outdoor unit, (2) 25 foot copper line sets w/ installation kits
  • Outdoor unit can handle up to 1 additional indoor unit, depending on type and capacity. This model is sold featuring the indoor unit styles and quantities pictured and described. Other types of indoor units are available, and are fully interchangeable - Wall Mount, Ceiling Cassette, Slim Duct, or Console. (For a custom-configured system featuring more indoor units, please contact customer support on how to order.)
  • Each indoor unit can be controlled using app and WiFi, either by USB adapter (Wall Mounts only) or WiFi-enabled remote control accessory, each sold separately
  • 22.0 SEER ultra energy efficiency
  • Heating and cooling down to -13ºF
  • Easy setup - even self-installation - for multiple zones that can be controlled separately
  • Automatic operation
  • Intelligent pre-heat, intelligent defrost
  • Vertical auto swing - 3-dimensional swinging louvers direct airflow to uniformly spread air to every corner of room
  • Comfortable sleep mode and timer
  • Quiet operation, low noise level
  • Multiple fan speeds
  • LED display
  • Self-diagnostic
  • Memory function
  • 5 Year Parts, 7 Year Compressor Replacement Limited Warranty
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 310337739

Model # RHDZ-27-9/18WM

Store SKU # 1005172319



Air handler depth (in.)


Air handler height (in.)


Air handler width (in.)


Condenser depth (in.)


Condenser height (in.)


Condenser width (in.)



Air direction/circulation


Air Handler BTU

9000 BTU x 18000 BTU x No Heat

Air handler weight (lb.)


Amperage (A)

20 A

BTU Cooling Rating

27000 BTU

BTU Heat Rating

28000 BTU

Color Family




Condenser weight (lb.)


Coverage Area (sq. ft.)


Decibel (Sound) Rating

63 dBA

Decibel Rating

63 dBA

Filter Type



Heater, Remote Control, Self-diagnostic tools, Support Brackets

Line Set Length (Ft.)

25 ft x 25 ft x 25 ft

Mini Split Features

Auto cool, Automatic shutoff, Defrost, Fan only option, Multi-zone compatible, Overload protection, Programmable, Sleep setting, Timer

Minimum Outdoor Temperature (F)


Mount Location

Wall Mount

Number of cool settings


Number of Fan Speeds


Number of Tons

2.25 ton

Pack Size


Power Options


Remote Access

Remote Access



Voltage (v)


Wattage (watts)


Zone Capacity

3 Zone

Warranty / Certifications

Certifications and Listings

AHRI Certified, ETL Listed, Energy Star

Manufacturer Warranty

5 Year Replacement Parts Only. 7 Year Replacement Compressor Only. Labor Excluded.

Seasonal Energy Efficiency Ratio (SEER)


Questions & Answers

Q:Does this come with three cassettes?
by|Apr 7, 2024
1 Answer
Answer This Question

A:  This unit is a dual zone with 2 wall mount units, but we do offer a unit with 3 ceiling cassette units. Refer to Internet # 320593867 Model # CH09/09/09MSPHCT230VI-CH27MSPH230VOA Store SKU # 1007848154

by|Apr 8, 2024
    Q:Can the copper lines be trimmed to proper length on this unit? The 9000 btu unit will have a shorter run than 25?. The 18000 will have a longer run than 25?. Adding the extra from the 9000 to the 18000, will have enough with included line set feet.
    by|Sep 18, 2023
    1 Answer
    Answer This Question

    A:  Yes they can be cut to application length and re-flared. Ramsond

    by|Sep 27, 2023
      Q:Who do we contact if parts are missing in kit?
      by|Jul 15, 2023
      1 Answer
      Answer This Question

      A:  Contact Ramsond 866-777-7071 they will need your order number or P.O. number.

      by|Jul 27, 2023
        Q:Can a 50 ft line be added to a dual unit instead of one of the 25? lines
        by|Jul 10, 2023
        1 Answer
        Answer This Question

        A:  Yes we offer up to 50 foot at an additional charge.

        by|Jul 27, 2023
          Showing 1-4 of 8

          Customer Reviews

          4.5 out of 5

          • 4.5 out of 2 reviews
          • 0% recommend this product
          Filter by:
          Showing 1-2 of 2 reviews
          Directions and info on the Ramsond website wasn’t really that good. Was very easy to install after watching a few videos on YouTube (not for a Ramsond unit). I cut the line sets to length so there was not any extra coiled up that would look bad. Seems to be working good. I’ve been running it for about 2 weeks at a remote cabin with no issues so far. I added two Mysa Wi-Fi thermostats and had no issues controlling it remotely so far. I will leave another review if anything changes. Also will see what the difference is on the electric hill compared to electric baseboards. As far as shipping to Home Depot for store pickup it seemed like it took a long time. Expected to pick up items in a more timely manner.
          • Verified Purchase
          Very quite unit. It cooled a 1600 sq ft...
          Very quite unit. It cooled a 1600 sq ft house with ease. Seems to be very efficient, only time will tell. Thanks to the 2 girls at Home Depot that helped me load the unit as it is very heavy.
          • Verified Purchase
          Showing 1-2 of 2 reviews