If you are looking for The Best Portable Air Conditioner, it should be Honeywell MM14CHCS. After over 17 hours of research, Honeywell is our clear winner. For a reasonable price, it packs quite the punch at 14,000 BTU. It’s sleek, stylish, efficient and eco-friendly. And the great thing about it is that you can also use it as a portable heater during winter. Here is a handy “top 10 portable air conditioners” list if you want to quickly scan through: # Preview Product Rating 1 Global Air 10000 BTU ( With Remote Control In White) Buy on Online 2 Black Decker BPACT10WT ( Conditioner, 10,000 BTU) Buy on Online 3 Portable Air Conditioner Fan ( Humidifier Misting Fan For Home Office Bedroom(Black)) Buy on Online 4 Honeywell MO08CESWK Compact Portable ( Sq. Ft. With Remote Control (Black/White)) Buy on Online 5 Honeywell 10000 Btu Portable ( Sq. Ft With Remote Control) Buy on Online 6 DeLonghi Pinguino PACEL290HLWKC1A 700 ( Heater, Dehumidifier, Fan (Renewed)) Buy on Online 7 Portable Air Conditioner Fan ( Humidifier Misting Fan For Home Office Bedroom, Black) Buy on Online 8 HOmeLabs 14000 BTU Portable ( Dehumidifier Function, Remote Control And Washable Filter) Buy on Online 9 Whynter ARC14S 14000 BTU ( Filter Plus Storage Bag For Rooms Up To 500 Sq Ft) Buy on Online 10 JHS 8000 BTU Small ( Digital LED Display, Cover Up To 200 Sq. Ft.) Buy on Online We also talk about a few other alternatives below, but for most people who are looking for a reliable portable air conditioner, Honeywell MM14CHCS is our top pick. View Deal At 14,000 BTUs, Honeywell MM14CHCS easily cools areas up to 550 square feet. It’s a 4-in-1 portable unit that combines air conditioner, dehumidifier, fan and heater all into one single unit. It also comes with a full-function remote control for use from across the room. You’ll love the Digital LED display and precise-feature touch controls. The fan runs 3 speeds and the automatic shutoff timer ranges from 1 to 24 hours. 4 castor wheels let you easily move it around and from room to room. When you purchase Honeywell MM14CHCS, the box comes with everything you need -- which includes a flexible exhaust hose and an easy-to-install window venting kit. You can easily remove the window vent when the AC is not being used. It has fairly powerful air flow at 265 CFM (Cubic Feet Per Minute). Despite being a fairly heavy-duty portable air conditioner, Honeywell MM14CHCS runs pretty quiet. It’s sound output is only 54 dbA. It’s no bucket, no-drip design uses auto-evaporation system -- which lets you continually operate the AC for hours without having to drain water or empty a bucket. It’s 12,000 BTU heat pump will keep you warm during the winter as well. The heat pump covers area up to 400 square feet. Read some reviews from recent buyers here. What “power” portable air conditioner do I need? Before we move on to exploring other alternatives to Honeywell MM14CHCS, I want to briefly talk about how the “power” of an air conditioner is determined and what size/power air conditioner you need. The cooling power of an air conditioner is measured in British Thermal Units (BTUs). Generally speaking, a BTU is the amount of energy needed to cool or heat one pound of water by one degree Fahrenheit. In air conditioner (AC) lingo, however, a BTU measures the amount of heat an AC unit can remove from the room. Therefore, the size of your area determines how many BTU- air conditioner you will need. You don’t want a very low BTU -- since it will be running constantly to get to your...