Honeywell MF08CESWW Review

If you live in a small apartment, dorm room, or older home and the summer’s heat is just too much to bear, then this compact portable air conditioner will save you. The Honeywell MF08CESWW is an 8,000 BTU unit which tends to be one of the best small portable air conditioners. It measures 14.2 x 19.5 x 24.4 inches, and with powerful air flow (147cfm), it will effectively cool a space up to 300 square feet.Honeywell MF08CESWW

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If this is the perfect size portable air conditioner for your needs, then Amazon offers a great price on this model. For more information on this unit, continue to read all about the Honeywell MF08CESWW. You can also jump ahead to a section of interest by using the links below.

Does it cool, dehumidify, and heat?

It may not have all of the bells and whistles of some of the larger 12,000 and 14,000 BTU units, but you still get cooling, fan, and dehumidifier. The fan has three speeds and can operate alone. This is great if you just need to circulate the air in a room but don’t need to lower the temperature.

The dehumidifier will remove up to 60 pints of moisture each day. It comes with Honeywell’s Auto-Evaporation system so the unit dispels the moisture outside and does not collect the water in an internal tank that you would have to regularly drain. In high humidity areas, some residual moisture may still accumulate in the tank and may need to be periodically drained. A red warning light will appear on the LED screen and the unit will shut-off when the internal tank is full.

One summer, I rented an apartment in Cleveland, OH without central air conditioning or ceiling fans. Even with all of the windows open there was no air circulation. Oh, how I wish I would have had a portable air conditioner then! It would not have taken much to cool that space either. This small portable air conditioner from Honeywell would have been just right.

It comes with a remote control which I really enjoy. You won’t have to get out of bed or off the couch when binge watching a TV series on Netflix. There is also a slot on top of the unit to hold the remote. Theoretically, this is convenient; the only problem is that you have to remember to put it there when you get up. If the remote gets lost, the unit will not operate. I wish there were manual buttons on the face of the air conditioner.

I do appreciate the removable and easy to clean air filter. It just slides out of the side of the air conditioner and can be rinsed with water to remove any dust. Doing this every few weeks will keep the unit operating properly. Some users of other portable air conditioner brands run into trouble when dust collects in their machine and affects operation and causes leaks. Honeywell’s removable filter ensures this won’t be a problem.

A feature that this unit does not have that you can find on some other portable air conditioners is a heat pump. A heat pump is a reverse air conditioner so you will still need to vent it to the outside, but it does allow year round use. If a heater is an important feature, consider the Honeywell MM14CHCS 14,000 BTU Portable Air Conditioner. Or for a smaller, slimmer option, try the SPT 9,000 BTU Slimline AC with heater.

How do I install this portable air conditioner?

I really like that it is easy to install. It comes with a window venting kit that can expand up to 38 inches. Basically, you slide the window open. Place this plastic insert in and expand it the length of the window. Pull the window down until it sits on top of the window insert and creates a seal. Then, you will attach the exhaust hose (this is a single hose unit) from the back of the air conditioner to the hole in the window piece you just inserted.

One tip to save energy and money is to make sure the window venting kit is completely sealed in the window and to insulate the hose and window seal. Without this, some of the radiant heat is going to escape back into your room. By wrapping Reflectix duct wrap and tape around the hose and covering the entire hose and window adaptor, you can create this insulation and seal. Check to see if any heat is escaping into the room. If so, add more wrap and tape. If not, you’re good to go. This should really increase its efficiency and reduce operating costs.

If your window opens from side to side or you are installing this in a sliding glass door, you may have to make some adaptations to the window venting kit but it can still work for you. See my tip for installing it in sliding glass door.

Since installation is straightforward and not permanent, you can move the unit from room to room. It comes with a handle, on caster wheels and weighs 52 pounds, which is lighter than most portable air conditioners. You could push this into your living room during the day and back into your bedroom at night. Plus, if you don’t feel safe leaving this installed when you are not home, you can take it out before you leave and reinstall it when you get home. It takes about 5 minutes to install and approximately 20-30 minutes to cool your room.

How noisy is this portable air conditioner?

Did I mention that it is a quieter model? This is a concern for many when buying a portable AC. While there are no silent air conditioners, this one operates at 54 dbA and will sound like white noise. You should not have trouble having a conversation or need to turn up your TV while it is operating. Some even like the soft background noise to help them fall asleep at night.

If that’s not you, never fear…there is a solution. The built-in 24 hour timer allows you to program when the unit will turn off or on. My suggestion is that you turn it off before falling asleep and set the timer to have it turn back on once you are sleeping soundly.

I also like the timer because it cuts cooling costs. No need to run the air conditioner all day when you are not home. If you still want to return to a cool space, set the timer to start the air conditioner a half hour before you arrive and you’ll have the best of both worlds- lower electricity bill and comfortable home.

What is the warranty?

There is a one year parts and labor warranty. Plus, the five year sealed system warranty covers the compressor, condenser, evaporator and factory connected refrigerant tubing.


For small, hot spaces, the Honeywell MF08CESWW is going to get the job done. It is a popular 8,000 BTU model that can be purchased from Amazon. It comes with many features including: air conditioner, fan, dehumidifier, removable filter, timer, and quieter operation. The drawbacks are that it does not have a heat mode and the unit must be operated with the remote. In general, the remote is a convenience and the heat mode is only useful in some parts of the country. If you simply want a reliable and small portable air conditioner that does not make a lot of noise or require much maintenance, then this is the one for you.

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