Friedrich M18CF
18,000 BTU Single Zone Wall-Mounted Ductless Split System with Advanced Inverter Technology, LCD Wireless Remote and 415 CFM Room Air Circulation (MW18C3F Indoor /MR18C3F Outdoor)


No Longer Available

Additional Options

Refrigeration Line Sets


15 ft. Insulated Refrigeration Line Set for 18,000 BTU Indoor Mini-Splits

(T42150) (required) preview
+ $117.00 

35 ft. Insulated Refrigeration Line Set for 18,000 BTU Indoor Mini-Splits

(T42350) (required) preview
+ $208.00 
The M18CF Ductless Split System features a new level of system flexibility and control at your fingertips with the Advanced Inverter Technology. Inverter Technology lets you reach the desired temperature FASTER, maintain it MORE ACCURATELY, and REDUCE energy costs. It eliminates the constant compressor start-ups/ shut-downs required to maintain the set temperature with traditional technology. It controls compressor rotation speed precisely and adjusts capacity to meet demand, which in turn reduces energy consumption.

Inverter Technology allows each system to adjust capacity and cooling output to provide only the amount of cooling needed at a given time. For example, an 18,000 BTU/h system will operate even more efficiently as a 15,500 if that is all that's needed.

All of the Friedrich ductless split systems exceed the new 13.0 SEER requirements. And, a full one-third of the models have super high ratings ranging from 16.5 to 19.0 SEER.

Units are fully programmable, so setting and keeping the desired comfort level is a snap. Smart features like "Sleep Timer" and "Energy Saver" allow the user to program the unit for optimum energy savings. The continuous "Air Sweep" auto louvers gently distribute cool or warm air throughout the room.

A new level of system flexibility and control is at your fingertips on Friedrich single and multi-zone systems. You'll have more options for optimum comfort, control and energy savings.

Over 20 single, dual, tri- and quad-zone systems provide a wide range of heating and cooling options for even the toughest remodels, additions and improvements.

The Friedrich ductless split systems have the advantages of a ducted installation without the high material and labor costs. Absolutely no ductwork is required, so most systems can be installed and running in a few hours.

Residential/Commercial Applications
  • Computer rooms/ server rooms
  • Room additions/ renovations
  • Homes without ductwork
  • Kitchen and prep areas in restaurants
  • Offices in warehouse spaces or large retail buildings
  • Offices and buildings where security concerns prevent the installation of window units
Dimensions & Weight
Indoor Unit Width: 31 1/8"
Indoor Unit Height: 10 7/8"
Indoor Unit Depth: 8 1/2"
Indoor Unit Net Weight: 21 lbs.
Indoor Unit Shipping Weight: 26 lbs.
Outdoor Unit Width: 31 1/8"
Outdoor Unit Height: 22 3/4"
Outdoor Unit Depth: 12 3/8"
Outdoor Unit Net Weight: 88 lbs.
Outdoor Unit Shipping Weight: 98 lbs.
Performance Ratings
Indoor Model: MW18C3F
Outdoor Model: MR18C3F
Capacity Cooling: 18,000 BTU/h
SEER: 19.0
Moisture Removal: 5.9 Pts/h
Airflow (Quiet, Low, Med, High): 240/290/355/415 CFM
Sound Rating - Indoor: 25/32/38/44 dB-A
Sound Rating - Outdoor: 50 dB-A
Operating Range: 0 - 115°F
Electrical Data
Power Source: 230/208-60-1
Min. Ampacity: 16A
Cooling Watts: 1,730W
Max. TD Fuse/Breaker: 20A
Refrigeration System
Refrigerant: R410A
Compressor Type: Inverter
Connections: Flare
Liquid Line O.D.: 1/4"
Suction Line O.D.: 1/2"
Factory Precharge: 49 ft.
Max. Line Length: 66 ft.
Max. Height Difference: 49 ft.
  • Features
  • Auto Swing louvers (up/down)
  • Continuous 'Air Sweep'
  • Auto-restart
  • Auto-shut flaps
  • Washable, reusable air filters
  • Low-ambient operation
  • Removable front grille
  • Wireless Remote
  • 24-hour timer
  • Sleep Timer
  • Auto/cool/dry/fan modes
  • Four fan speeds: high/medium/low/quiet, plus auto-fan
  • Four different transmitter codes
  • Secured remote control holder
Info and Guides

Adobe Acrobat FileWarranty

Adobe Acrobat FileSubmittal Form

Adobe Acrobat FileInstallation Manual

Adobe Acrobat FileOperating Manual

Adobe Acrobat FileService Manual

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Product Reviews
Rated 4.7 out of 5 by 12 reviewers.
Rated 5 out of 5 by I should have buy this unit a long time ago for some items the french guide translation isn't too good so I had to refer to the english one to be sure about the instructions. 5/24/12
Rated 5 out of 5 by You get what you pay for! This unit is everything it was presented to be. The technician that installed it thought something was wrong when he turned it on. He told me it was not running and he did not know why. Actually, it was running, that is how quiet it is. He said he never installed an AC unit that ran that quiet. 7/13/08
Rated 5 out of 5 by Better than Expected Extremely Pleased. Outside and inside unit are nearly silent, on low they are silent. Performance is outstanding. I over-sized my unit slightly to use only the low settings to achieve the lowest noise levels. Installation is fairly simple; an 80mm hole in the wall was the biggest complication. Unit also required evacuation of the lines. I located inexpensive service gages and a low cost 2 stage vacuum pump for about $300 total and did it my self. The instructions walk you through it, or you will have to get a A/C technician. Some places will not want to work on a non professional installation. Look for smaller independent firms. 6/23/09
Rated 5 out of 5 by Mini Split - A perfect fit I did a good bit of internet research prior to purchasing this unit and was looking for a good SEER/EER performer that could do the job. 2 items that concerned me were the following. Not a lot of installers had experience with these systems in Houston and there were no customer reviews on this model or MFG. I have known of Friedrich for a long time, so I knew there were no fly by night company. The installation time was 1 day with 3 men (2 story install). The single zone unit is cooling 500 Sq ft, 3 room garage apartment very easily and amazingly efficiently. I was VERY impressed with the low noise. The multi-speed, inverter heat pump compressor is whisper quiet. The evaporator fan even on high is quiet. I highly recommend this unit. One contractor bid the job and tried to talk me into changing to a central system, glad I did not fall for the bait and switch. 6/30/09
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Warranty Info

Warranties on mini split air conditioners only include parts and do not include labor. The licensed HVAC Technician who installs your air conditioner should always provide you with a labor warranty (preferably for at least a full year to compliment the manufacturers' parts warranty).

AJ Madison will only finalize a Mini Split (Ductless Split System) purchase with an authorized HVAC Technician. AJ Madison recommends the installation of a mini-split system to be performed by a trained and qualified HVAC technician with the proper knowledge and background. A trained technician will be able to judge the best location for the air handling (evaporator) unit and also the correct size for the area the unit will heat and/or cool. For assistance with all your technical needs please contact our technical department at

Should you experience an issue during the installation or the initial startup of a unit please do not contact the manufacturer. You should have the technician that installed your system contact either AJ Madison or the manufacturer. We cannot accept any service or warranty calls from anyone but a licensed HVAC technician. We have a full technical support team available to help you throughout the installation process.

AJ Madison, Inc. cannot be held liable for improper installation and operation of any product purchased from our company. Should a warranty issue arise in which parts will need to be replaced, an installation receipt will be required along with your AJ Madison sales receipt. Failure to provide a receipt or invoice may result in the warranty not being honored.

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Quick Specs
Quick Specs


  • AC System Type : Mini Split
  • Component Type : System
  • Wireless Remote Control(s) Included : Included
  • Wired Remote Control(s) Included : No

Electrical Data

  • Running Current Cooling - Max. (Amps) : 16 Amps
  • Power Input Cooling - Max. (Watts) : 1,730 Watts


  • Energy Star Certified : No
  • EER (Energy Efficiency Rating) : 10.4
  • SEER (Seasonal Energy Efficiency Rating) : 19
  • Airflow Rate Medium (CFM) : 415 CFM

Refrigeration System

  • Max. Line Length - Each : 66 Ft.

Technical Details

  • ADA Compliant : No
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