The Best Portable Air Conditioners of 2026

If your room runs up to about 550 square feet and you want the quietest unit here with the lowest power bill, get the Midea Duo MAP14S1TBL. Midea’s own federal EnergyGuide label puts it at a 13.8 Combined Energy Efficiency Ratio, the highest of any unit in this guide, and it runs at 42 dBA, quiet enough to sit a few feet from a headboard. It also uses a dual, hose-in-hose design that Midea says keeps hot exhaust air separate from the cool air it pulls back in.

If your space runs closer to 700 square feet, the Black+Decker BPACT14WT covers the most ground on paper of the single-hose units here. Want heat as well as cooling once the seasons turn, or want a second hose pulling in outside air instead of already-cooled room air, look at the Whynter ARC-14SH. On a tight budget in a small bedroom, the Frigidaire FHPC102AC1 lists for less than any other pick in this guide.

How we picked these portable air conditioners

Every unit here is scored 0 to 10 on five weighted criteria: cooling power for the room size measured in SACC BTU (30 percent), energy efficiency measured by CEER (20 percent), noise (20 percent), setup and window kit (10 percent), and estimated 3-year electricity cost (20 percent). Full method at how we score.

We pulled specs and pricing from each brand’s own product page and federal EnergyGuide label first, and from Walmart or Amazon listings when a spec was not published on the brand’s own site. These are researched picks built from published specs and manufacturer data, not units we bought and tested side by side in person.

What to look for in a portable air conditioner

• Shop by SACC BTU, not the bigger ASHRAE number. Every box lists two cooling numbers. ASHRAE is the older rating measured with no hose attached. SACC (Seasonally Adjusted Cooling Capacity) is the newer rating that accounts for the warm air a hose pulls back into the room, so it always reads lower, often by a quarter or more. A box marked “14,000 BTU (ASHRAE) / 10,000 BTU (SACC)” will cool your room like a 10,000 BTU unit, not a 14,000 BTU one.
• Check the CEER number, not just the BTU count. Combined Energy Efficiency Ratio is cooling BTU per watt of power. A CEER in the 6.5 to 8 range is typical for a single-hose unit; Midea’s 13.8 CEER on the Duo, backed by its own inverter compressor, is well above that range and shows up directly as a lower power bill.
• Aim for 52 dB or under in a bedroom. That is roughly the level of a quiet home office. The Black+Decker’s 54 dB rating is fine for a living room but noticeable overnight next to a bed.
• Measure your window before you buy a window kit. Most kits are built for double-hung or sliding windows and extend to a published maximum width, typically in the 20 to 49 inch range. A casement or crank-style window may need a different kit than the one in the box.
• Decide if you actually need dual hose. A dual-hose unit like the Midea Duo or Whynter ARC-14SH draws intake air from outside instead of the room, which helps it recover faster after a door opens. It also means fitting two hose collars into your window kit instead of one, so installation takes a little longer.
• Weigh the unit and its casters. These four run 62 to 75 pounds. If you plan to roll it between rooms by season, confirm it has four caster wheels, not two, before you buy.

Running a portable AC also pulls moisture out of the air as a side effect. If damp air is your main complaint in a basement or laundry room instead of heat, our best dehumidifiers guide covers units built specifically for that job.

FAQ

What is the difference between SACC and ASHRAE BTU ratings?

ASHRAE is the older cooling rating, measured in a lab with the unit run without a hose attached. SACC, short for Seasonally Adjusted Cooling Capacity, is the newer rating brands must also publish, and it accounts for warm air a single hose pulls back into the room as it exhausts. SACC numbers read lower than ASHRAE numbers for the same unit, so size your room against the SACC figure, not the larger ASHRAE one printed first on most boxes.

How much does it cost to run a portable air conditioner for a summer?

Based on the wattage or EnergyGuide label for each unit in this guide, running 8 hours a day for about 4 summer months a year at $0.17 per kWh works out to roughly $119 a year for the most efficient pick here and about $228 a year for the least efficient. Check the cost box on each product above for the full 3-year total and the exact assumption behind it.

Do I need a dual-hose portable air conditioner?

Only if your room struggles to recover temperature after the door opens and closes often, or you want heat as well as cooling from the same unit, like the Whynter ARC-14SH’s 13,000 BTU heat mode. For a bedroom you close up and cool overnight, a single-hose unit like the Frigidaire or Black+Decker installs faster and costs less up front.

What size portable AC do I need for my room?

Match the SACC BTU rating on the box to your room’s square footage, not the higher ASHRAE number. A small bedroom around 250 square feet, like what the Frigidaire FHPC102AC1 is rated for, needs far less cooling power than an open living room near 700 square feet, which is closer to what the Black+Decker BPACT14WT is rated to cover. Rooms with tall ceilings, lots of west-facing glass, or a second-floor location generally need more capacity than the square footage alone suggests.

Can I install a portable air conditioner without a window?

No. Every unit in this guide vents hot air through a hose that has to terminate somewhere outside the room, typically through a window kit, though some installs use a wall port or drop-ceiling tile instead. If you have no window or exterior access at all, a portable unit will not work, and you would need a different type of cooling system such as a ductless mini-split.