With winter behind us, it’s only a matter of time before the heat of the spring and summer sun begins to take its toll. You know what that means: it’s time to put away the space heaters and look for a cooling system to keep away the sweats. If your home or apartment doesn’t have centralized cooling, then the next best thing would be to get a portable air conditioner.

Honeywell MO Series Compact 3-in-1 Portable Air Conditioner Review

Honeywell is well-known for creating some of the best portable air conditioners on the market. We’ve seen what some of their AC units can do, and this time around, we’re going to take a look at their 3-in-1 MO08CESWK Portable Air Conditioner from the MO Series. Let’s dive right in, shall we?


8,000 BTUs for 250-square-foot Rooms

One of the first things to consider when looking at potential portable AC units to take home with you is its coverage capacity. This Honeywell model is an 8,000-BTU unit that, at most, can cool rooms as large as 250 square feet. Now, that’s not the farthest reach by portable AC standards, but it works beautifully in bedrooms and other small spaces.

Honeywell MO Series Compact 3-in-1 Portable Air Conditioner

Honeywell MO

Light and Compact Design

The main selling point of the 8,000-BTU Honeywell is its ultra-portability. Its overall dry-weight is 43 pounds and only takes up 15 x 14 inches of floor space. It also sits atop four caster wheels for easy maneuverability between rooms.

On each side of the unit, you’ll handles that simplify the task of lifting it up and down stairs. Make sure you have someone spotting you since lifting 43 pounds of plastic and metal is no mean feat.

Two Fan Speeds

Due to its limited cooling capacity in terms of range, the Honeywell only comes with two fan speeds: high and low. You’ll most likely end up using the higher fan speed regardless of which room you’ve placed the unit in, but when it comes time to hit the hay, low-speed will you with all the cooling you need without jolting you awake at night.

Honeywell MO Series Portable Air Conditioner Review

Honeywell MO

While we’re on the subject of noise output…

Quiet-ish by Portable AC Standards

Portable AC units aren’t exactly known for their whisper-quiet operations. In fact, compared to other types of cooling systems, portable ACs belong on the louder end of the noise spectrum.

However, this isn’t actually the case with the Honeywell—at most, it produces a relatively quiet 53-decibel hum, while low fan speed is rated at roughly 45 decibels.

44-PPD Dehumidifier Mode

The Honeywell isn’t a one-trick cooling system. Excess humidity can reduce the effectiveness of a cooling system, but if the air conditioner had, say, a built-in dehumidifier, then you can cool a room down almost instantly.

The Honeywell has a dehumidifying system that can eliminate up to 44 pints of moisture daily. That’s not at the same level as stand-alone dehumidifiers, but it’s decent enough to get rid of most moisture in the muggiest, most uncomfortable conditions.

The dehumidifying system evaporates whatever moisture is collected, reducing the frequency of the water tank reaching capacity. It’s advised that you attach a drain hose (sold separately) if you live in tropical climates.

Honeywell MO Series

Honeywell MO

Related Portable Air Conditioner Articles

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Single And Comparison Articles
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BLACK+DECKER vs Whynter

Info Articles
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Easy Installation

Installing a portable AC unit is pretty straightforward. Place the unit near a window, install the window kit, run the vent hose through send kit, and you’re pretty much finished. Those are the steps needed to install the Honeywell and get her started

24-hour Timer and 10-hour Sleep Mode

Like most portable AC units, the Honeywell comes equipped with timer and sleep mode functions. Both of these time-limiting features ensures that your portable AC doesn’t run longer than it’s needed.

On sleep mode, it switches to the low fan speed automatically for practically noiseless operation. You can access both of these features via the remote control.

Air Filter Indicator

The Honeywell comes with its own filter to prevent outdoor particles from finding their way into your home. The filter isn’t particularly special in terms of performance, but most common allergens (pollen and dust) adhere to the filter most of the time.

On the digital display, you’ll find a filter indicator that should alert you when it’s time to clean it out. A quick rinse under running water should do the trick.

Honeywell Portable Air Conditioner

Honeywell MO

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Verdict: Should I Get the MO Series Compact 3-in-1 Portable Air Conditioner?

Overall, the Honeywell 3-in-1 MO08CESWK Portable Air Conditioner is a pretty decent model. Its coverage capacity may be too short for many people’s liking, and it does limit which rooms it works optimally in, but for the average sized bedroom, it works absolutely beautifully.

You can never go wrong with a multipurpose cooling system with a built-in dehydrator.

Honeywell MO Series Compact 3-in-1 Portable Air Conditioner Review


Overall Recommended Portable Air Conditioners
Best of the Best! For Large Spaces Budget Pick
Whynter ARC-14S 14,000 BTU Dual Hose Portable Air Conditioner hOmeLabs 14,000 BTU Portable Air Conditioner BLACK+DECKER BPACT08WT Portable Air Conditioner
Whynter ARC-14S hOmeLabs BLACK+DECKER BPACT08WT
 • 14,000 BTU
 • up to 500 sq ft
 • 16 x 19 x 35.5 in
 • 80 Lbs
 • 12-14,000 BTU
 • up to 600 sq ft
 • 17.9 x 15 x 30.7 in
 • 72.3 Lbs
 • 8,000 BTU
 • up to 150 sq ft
 • 16.5 x 11.5 x 26 in
 • 52.9 Lbs