Pros / The Friedrich P09B can remove 5 pints of moisture from the air every hour, making it an excellent unit for humid climates.

Cons / This is one of the largest and heaviest portable air conditioners we evaluated, meaning setup and takedown are a chore.

 Verdict / The Friedrich P09B is a great choice for rooms up to 400 square feet, and it has a full suite of convenient features to keep you cool and comfortable during warmer seasons.

The Friedrich P09B produces up to 9,300 Btu, so it can effectively cool rooms up to 400 square feet in size. It also has an airflow rating of 212 cubic feet per minute, meaning it pushes a decent amount of air through the machine. If you live in a humid environment, this Friedrich AC unit is an excellent choice because it can remove up to 5 pints of moisture out of the air, which is more than any other machine we reviewed.

It also has three fan speed settings, allowing you to select just how quickly the machine cools your room. It includes a fan-only mode, so you can use it to circulate air through the room without cooling it, which is a nice feature on cool summer nights. Additionally, the machine has a dehumidify mode that works exclusively on removing excess moisture from your home. Unfortunately, the machine lacks a sleep mode to operate on quiet settings and gradually raise the temperature at night to keep you from getting too cold while you sleep. The Friedrich is also missing oscillating louvers to help spread cool air throughout the room.

This portable air conditioner has an energy efficiency ratio of 9.4. This specification found on air conditioners helps give you context for how energy efficient the machines are compared to others. Although an EER of 9.4 isn't as impressive as the Whynter ARC-12S's EER of 11.1, it is still efficient when compared against other portable air conditioners on the market. We estimate the Friedrich P09B will cost around $85 a year to operate, but this figure can differ dramatically based on your usage.

In addition, this unit comes with the UL-Listed mark, which means it has been independently tested by a third-party certification company and has met or exceeded specific safety requirements. Unfortunately, it does not have the RoHS-compliant mark, which means it may contain certain hazardous materials such as lead or polybrominated biphenyls.

The Friedrich P09B only produces 50 decibels on its highest setting, which is about as loud as a calm conversation between two or three people. This decibel rating makes it one of the quietest portable air conditioners we reviewed. This machine comes with a remote control that includes an LCD screen, which allows you to easily see the air conditioner's current settings and change them as you need. It also includes a 24-hour programmable timer that allows you to schedule specific times for the machine to turn on or off as well as an auto evaporative system that sucks up the moisture from the air and expels it through the vent.

The Friedrich weighs a hefty 71 pounds, making it one of the heaviest portable air conditioners we reviewed. It is also wider and taller than any other machine we reviewed, so if you live on the top floor of an apartment building, lifting it up the stairs will be a chore. As with all portable air conditioners, this machine comes with a window kit and vent hose to move hot air out of the house. The window kit can fit in window sills up to 46 inches wide, while the vent hose extends up to 5 feet long.

This portable air conditioner comes with the industry standard one-year warranty on the appliance, but it has a five-year warranty on the compressor. This is the longest warranty we have seen for a portable air conditioner. If you need to contact the company, you can reach customer service through email or over the phone. The company does not offer live chat support. However, you will find a copy of the user manual online, so you don't have to hang on to the physical copy that comes with the air conditioner if you don’t want to. Finally, you can solve problems on your own by checking out the FAQs page to find answers to common questions.

Friedrich P09B Visit Site
  • Room Size
  • Power
  • Moisture Removal
  • Estimated Annual Energy Cost
  • Noise Level
  1. The maximum room size the machine will be effective in.
    Larger is Better.
  2. 5  Friedrich
    400.0 Square Feet
  3. 550.0 Square Feet
  4. 550.0 Square Feet
  5. 700.0 Square Feet
  6. Category Average
    535.0 Square Feet


The Friedrich P09B is fully capable of cooling rooms up to 400 square feet. The machine can second as a dehumidifier as it can remove 5 pints of moisture from the air per hour. Unfortunately, this machine is both large and heavy, making it difficult to move around the house. However, the machine isn't loud, even on its highest settings, and it includes helpful features such as a 24-hour programmable timer and an auto evaporative system so you don't have to constantly fuss with the machine.

Friedrich P09B Visit Site

Specifications and Benchmarks

Efficiency & Certifications

Energy Efficiency Ratio
Estimated Annual Energy Cost
UL Listed
RoHS Compliant


Noise Level (dB)
Remote Control
LCD Screen
24-Hour Programmable Timer
Auto Evaporative System
Auto Restart
Sleep Mode

Cooling Performance

Room Size (square feet)
Power (Btu)
Maximum Airflow (CFM)
Moisture Removal (pints/hour)
Multiple Fan Speeds
Fan Mode
Dehumidify or Dry Mode
Oscillating Louvers


Weight (pounds)
Max Window Size (inches)
Vent Hose Length (feet)
Width (inches)
19 1/2
Depth (inches)
15 1/2
Height (inches)
33 1/2

Help & Support

Compressor Warranty
5 Years
1-Year Appliance Warranty
Email & Phone
Online Manual
Live Chat