Running a dehumidifier and a window AC side by side off the same outlet is no longer necessary — a single portable unit now handles both jobs. The Whynter ARC-14S alone pulls 101 pints of moisture a day while cooling up to 500 square feet.

Photo
Top Pick
Whynter ARC-14S 14,000 BTU Dual Hose Air Conditioner
Versatile
Midea Duo 14,000 BTU High Efficiency Inverter Portable Air Conditioner
Budget
LG 14,000 BTU Smart Portable Air Conditioner with ThinQ
Best Value
DREO 515S 12,000 BTU Smart Portable Air Conditioner
Best for Reliability
BLACK+DECKER BPACT05SM 8,500 BTU Portable Air Conditioner
Product Whynter ARC-14S 14,000 BTU Dual Hose Air Conditioner Midea Duo 14,000 BTU High Efficiency Inverter Portable Air Conditioner LG 14,000 BTU Smart Portable Air Conditioner with ThinQ DREO 515S 12,000 BTU Smart Portable Air Conditioner BLACK+DECKER BPACT05SM 8,500 BTU Portable Air Conditioner
Coverage area 500 sq ft 550 sq ft 450 sq ft 300 sq ft 350 sq ft
Smart control
Cooling capacity 14,000 BTU (9,500 SACC) 14,000 BTU (12,000 SACC) 14,000 BTU ASHRAE (10,000 BTU DOE) 12,000 BTU ASHRAE (8,000 BTU DOE) 8,500 BTU ASHRAE (5,100 SACC)
Dehumidifier mode
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Quick Tips

Match BTU to actual square footage, not the marketing headline number — check the SACC rating, which reflects real-world performance better than ASHRAE.
Pick dual-hose over single-hose if your climate is humid; single-hose units pull humid outside air back into the room as they run.
Check the drain method — auto-drain and drainage-free units save you from manually dumping a bucket every few hours in high humidity.
Measure your window before buying; sliding and casement windows often need a different install kit than standard double-hung windows.

Whynter ARC-14S 14,000 BTU Dual Hose Portable Air Conditioner

Best for humid climates and larger rooms

Top Pick Whynter ARC-14S 14,000 BTU Dual Hose Portable Air Conditioner

Whynter ARC-14S 14,000 BTU Dual Hose Portable Air Conditioner

Best for humid climates and larger rooms

coverage area 500 sq ft
smart control No
cooling capacity 14,000 BTU (9,500 SACC)
dehumidifier mode Yes

What we like

  • Dual-hose design pulls less humid outside air back into the room than single-hose units
  • 101-pint-per-day dehumidifying capacity handles seriously damp basements and muggy climates
  • Auto-drain technology recycles condensation into the cooling cycle so you rarely empty a bucket
  • Casters and side handles make it easy to move between rooms

What we don't

  • No WiFi or app control — remote only
  • Larger footprint than single-hose competitors
  • Some owners report the compressor tripping breakers on older home wiring

You get the highest dehumidifying capacity on this list — 101 pints a day — paired with dual-hose cooling that doesn't drag humid air back through the gaps it creates. That combination is why it handles rooms up to 500 square feet even in sticky climates where single-hose units struggle.

Pick this if your room runs genuinely humid, not just hot. Skip it if you want app control or a smaller footprint — the Midea Duo below does both.

Bottom line
Best for a muggy 400-500 sq ft room where humidity, not just heat, is the actual problem.

Midea Duo 14,000 BTU High Efficiency Inverter Portable Air Conditioner

Best for quiet, efficient cooling with smart control

Editor's Choice Midea Duo 14,000 BTU High Efficiency Inverter Portable Air Conditioner

Midea Duo 14,000 BTU High Efficiency Inverter Portable Air Conditioner

Best for quiet, efficient cooling with smart control

coverage area 550 sq ft
smart control Yes
cooling capacity 14,000 BTU (12,000 SACC)
dehumidifier mode Yes

What we like

  • Inverter compressor runs at just 42 decibels on its quiet setting
  • Hose-in-hose design projects cool air up to 26 feet across the room
  • Works with Alexa and Google Assistant plus its own app for remote scheduling
  • Highest SACC rating on this list at 12,000 BTU for genuinely larger rooms

What we don't

  • Costs more than fixed-speed competitors with similar ASHRAE ratings
  • Short included power cord means no extension cord per manufacturer guidance
  • Window kit installation is reported as fiddlier than single-hose units

You're getting the best SACC-to-BTU ratio here, which means the 14,000 BTU on the box actually translates to 12,000 BTU of real cooling — the highest real-world number on this list. Inverter technology also means it doesn't cycle on and off loudly all night, running instead at a steady 42 decibels.

Pick this if you want app control and the quietest large-room option. Skip it if 550 square feet is more capacity than you need — the DREO below covers a mid-size room for less.

Bottom line
Best for a large living room or open-plan space where you want it to run quietly overnight.

LG 14,000 BTU Smart Portable Air Conditioner with ThinQ

Best for ThinQ app and voice control

Best for Smart Control LG 14,000 BTU Smart Portable Air Conditioner with ThinQ

LG 14,000 BTU Smart Portable Air Conditioner with ThinQ

Best for ThinQ app and voice control

coverage area 450 sq ft
smart control Yes
cooling capacity 14,000 BTU ASHRAE (10,000 BTU DOE)
dehumidifier mode Yes

What we like

  • LG ThinQ app lets you start, stop, and adjust the unit remotely from your phone
  • Works with both Amazon Alexa and Google Assistant for voice commands
  • Dedicated dry mode for damp days that aren't necessarily hot
  • Digital display and remote make in-person adjustments straightforward

What we don't

  • Only 2 fan and cooling speeds versus 3 on competing models
  • 450 sq ft coverage trails the Whynter and Midea on this list
  • Single-hose design pulls some humid air back into the room while running

You get LG's ThinQ ecosystem here, so you can shut the unit off from your phone before you're even home, or hand climate control to Alexa. It covers a real 450 square feet, useful for a standard bedroom or home office.

Pick this if you already use LG ThinQ or want a name-brand smart AC. Skip it if you need to cover a larger open room — the Midea Duo covers 100 more square feet for a similar price.

Bottom line
Best for a smart-home setup where you want the AC controlled from the same app as your other LG devices.

DREO 515S 12,000 BTU Smart Portable Air Conditioner

Best for a quiet, drainage-free bedroom unit

Best Value DREO 515S 12,000 BTU Smart Portable Air Conditioner

DREO 515S 12,000 BTU Smart Portable Air Conditioner

Best for a quiet, drainage-free bedroom unit

coverage area 300 sq ft
smart control Yes
cooling capacity 12,000 BTU ASHRAE (8,000 BTU DOE)
dehumidifier mode Yes

What we like

  • Drainage-free system evaporates collected moisture automatically below 90% humidity
  • Noise-isolation system brings compressor sound down to 45 decibels
  • App, voice, and remote control included at a lower price than the LG or Midea
  • Temperature range extends down to 61°F for aggressive cooling on the worst days

What we don't

  • 300 sq ft coverage is the smallest on this list besides the Black+Decker
  • Drainage-free claim stops working above 90% humidity, when you'd need it most
  • Newer brand with a shorter track record than LG, Midea, or Whynter

You're paying less than the LG or Midea here while still getting app control and one of the quietest compressors on this list at 45 decibels. The drainage-free system means you're not babysitting a bucket in moderate humidity.

Pick this for a bedroom or home office under 300 square feet where quiet matters more than raw capacity. Skip it in a genuinely humid climate — the drainage-free system stops helping above 90% humidity.

Bottom line
Best for a quiet bedroom under 300 sq ft where you don't want to deal with a drain hose.

BLACK+DECKER BPACT05SM 8,500 BTU Portable Air Conditioner

Best for a small room on a tight budget

Budget Pick BLACK+DECKER BPACT05SM 8,500 BTU Portable Air Conditioner

BLACK+DECKER BPACT05SM 8,500 BTU Portable Air Conditioner

Best for a small room on a tight budget

coverage area 350 sq ft
smart control No
cooling capacity 8,500 BTU ASHRAE (5,100 SACC)
dehumidifier mode Yes

What we like

  • Lowest price on this list while still covering up to 350 sq ft
  • Casters and side handles make it easy to relocate between rooms
  • Full-function remote control included, no app required
  • Compact 3-in-1 design combines cooling, fan, and dehumidifier modes

What we don't

  • No WiFi or voice control
  • 5,100 BTU SACC is the lowest real-world cooling capacity on this list
  • Single-hose design is less efficient in humid climates

You're getting the lowest price on this list and it still covers a real 350 square feet, which is enough for most bedrooms or small offices. It skips smart features entirely, keeping the price down.

Pick this if budget is the deciding factor and your room is on the smaller side. Skip it for a large or especially humid room — the Whynter or Midea will keep up better.

Bottom line
Best for a small bedroom or office when price matters more than smart features or max capacity.

What to Look For

BTU rating tells you cooling power, but SACC (Seasonally Adjusted Cooling Capacity) is the number that predicts real performance in your room. A unit rated 14,000 BTU ASHRAE might only be 9,500 BTU SACC — size around the SACC number, not the box art.

Dehumidifier capacity matters most if you're fighting a damp basement or a muggy bedroom rather than just heat. Look for pints-per-day removal specs and an auto-drain or drainage-free design so you're not emptying a bucket at 2 a.m.

Noise output decides whether this thing lives in your bedroom or gets banished to the living room. Anything under 50 decibels on the low setting is generally safe for sleeping.

Who Should Skip This

If you're cooling a single small room under 200 square feet, a window unit will cool better for less money than any portable AC on this list. If your main problem is humidity alone with mild heat, a dedicated dehumidifier will outperform a portable AC's built-in dry mode.

And if quiet is non-negotiable for a shared bedroom, test decibel ratings carefully — even the quietest portable units are louder than central air.

What the Community Actually Uses

On r/hvacadvice, the recurring theme is that people undersize their unit by trusting the bold ASHRAE BTU number on the box instead of the smaller SACC figure — then wonder why it runs nonstop without actually drying the room out.

Quick Picks — In Case You've Already Decided

Top PickWhynter ARC-14S 14,000 BTU Dual Hose Air Conditioner
Best for Reliability

Whynter ARC-14S 14,000 BTU Dual Hose Air Conditioner

Check Price on Amazon
VersatileMidea Duo 14,000 BTU High Efficiency Inverter Portable Air Conditioner
Best for Versatility

Midea Duo 14,000 BTU High Efficiency Inverter Portable Air Conditioner

Check Price on Amazon
BudgetLG 14,000 BTU Smart Portable Air Conditioner with ThinQ
Best Value

LG 14,000 BTU Smart Portable Air Conditioner with ThinQ

Check Price on Amazon

Frequently Asked Questions

Do portable air conditioners actually dehumidify a room?

Yes — most portable ACs pull moisture out of the air as a byproduct of cooling, and models with a dedicated dry mode do it even without dropping the temperature much. Check the pints-per-day rating if dehumidifying is your main goal.

What size portable AC do I need for a 400 square foot room?

Look for a unit rated around 12,000-14,000 BTU ASHRAE, or roughly 8,000-10,000 BTU SACC, for a room that size. Ceiling height, sun exposure, and insulation can push that number higher.

Is dual-hose really worth the extra cost over single-hose?

In humid climates, yes — dual-hose units create less negative pressure, so they pull less warm, humid air back into the room through cracks and doorways. In dry climates the difference is smaller.

How loud are portable air conditioners in a bedroom?

Most portable units run between 42 and 55 decibels on their lowest setting, comparable to a quiet conversation. Models advertising 'ultra-quiet' or noise-isolation tech tend to sit at the lower end of that range.

Do I need a special window kit to install one?

Most portable ACs ship with an adjustable kit that fits standard double-hung or sliding windows. Casement, slider, or unusually shaped windows sometimes need a separate kit sold by the manufacturer.

Buying Guide

You want cooling and dehumidifying without two machines cluttering the room. Match BTU rating to your square footage first — undersized units run constantly and still leave air damp.

Dual-hose models exhaust faster and pull less humid air back in. Check the noise rating before buying one for a noisy bedroom.

GT

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GearAndSteer Team

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