Best Portable Air Conditioner 2026: Top 5 Compared

The best portable air conditioner of 2026 is the Midea Silent Cool 26 Pro WF: 9000 BTU of cooling power (2.6 kW), a noise level of just 45 dB and control via app, voice or remote. That makes it quiet enough for the bedroom and powerful enough for rooms up to around 31 m². If you need more power for a large living room, the Inventum AC125W with 12000 BTU is the better choice, and if you want to keep spending to a minimum, the Tristar AC-5477 at 7000 BTU is the one to get.

A portable air conditioner is the fastest way to cool a room without any installation: unpack it, run the exhaust hose through the window and switch it on. But the differences between models are substantial. Cooling power ranges from 7000 to 12000 BTU, noise levels run from pleasantly quiet to genuinely annoying, and while one unit ships with a complete window seal kit, another makes you buy it separately. In this buying guide we compare five portable air conditioners you can actually buy right now, explain how many BTU you need for your space, and answer the most common questions about power consumption, exhaust hoses and window seals.

The prices in this guide are indicative; the product pages show current prices, updated daily.

The best portable air conditioners of 2026 at a glance

• Best overall: Midea Silent Cool 26 Pro WF — 9000 BTU, 45 dB, app and voice control
• Best for large rooms: Inventum AC125W — 12000 BTU, up to 105 m³, seal kit included
• Best smart 12000 BTU: Pro Breeze 12000 BTU — 4-in-1 with wifi and 24-hour timer
• Best compact smart unit: MEDION Smart P701 — 7000 BTU with app control and window seal kit
• Best budget: Tristar AC-5477 — 7000 BTU for under €200

How many BTU do you need?

BTU (British Thermal Unit) indicates the cooling power of an air conditioner. Portable air conditioners for home use almost always fall into three classes: 7000, 9000 and 12000 BTU. As a rule of thumb, at a normal ceiling height you need roughly 100 BTU per square metre:

• 7000 BTU (± 2.0 kW) — rooms up to ± 20-25 m²: bedroom, small home office, student room
• 9000 BTU (± 2.6 kW) — rooms up to ± 30 m²: spacious bedroom, average living room
• 12000 BTU (± 3.5 kW) — rooms up to ± 35-40 m²: large living room, open-plan kitchen, attic

When in doubt, go one size up. An underpowered air conditioner runs flat out all the time — with more noise and higher power consumption as a result — without ever reaching the target temperature. If your room has a lot of sun-facing glass, a sloped roof or an open staircase, allow more capacity than the rule of thumb suggests. The reverse also applies: a 12000 BTU powerhouse in a 12 m² bedroom is a waste of money and electricity.

Besides BTU, also check the rated room volume in cubic metres (m³) that many manufacturers state. The Tristar AC-5477, for example, is rated for 60 m³, which with a 2.6-metre ceiling works out at just over 20 m² of floor space.

Midea Silent Cool 26 Pro WF — the best portable air conditioner of 2026

The Midea Silent Cool 26 Pro WF has been the most popular portable air conditioner among our readers for quite a while, and that is no coincidence. It combines 9000 BTU (2.6 kW) of cooling power with a noise level of 45 dB — remarkably quiet for a portable unit, where the compressor sits right there in the room with you. For comparison: many competitors in this class hover around 55 to 65 dB. That makes this one of the few portable air conditioners you can genuinely sleep next to.

The WF version has wifi on board: you control the unit via the app, with voice control or with the included remote. Genuinely useful in practice: you can bring the bedroom down to temperature while you are still on the sofa downstairs. Besides cooling, the Silent Cool 26 Pro can also dehumidify and ventilate, and it runs on an environmentally friendly refrigerant. Midea rates it for rooms up to 31 m², which covers virtually every bedroom and most living rooms.

Strengths:

• Very quiet for a portable air conditioner (45 dB)
• Control via app, voice and remote
• 9000 BTU: the right size for most rooms
• Cooling, dehumidifying and ventilation in one

Weaknesses:

• Sells out quickly at many shops in peak season
• If you only need to cool a small room, a 7000 BTU model can work out cheaper

Who it's for: anyone looking for one good all-round portable air conditioner for the bedroom or living room who values quiet operation and app control.

Inventum AC125W — best for large rooms

The Inventum AC125W is, at 12000 BTU, the most powerful unit in this comparison and is rated for rooms up to a full 105 m³ — around 40 m² at normal ceiling height. That makes it the model for a large living room, an open-plan kitchen or an attic floor that turns into a sauna every summer.

It is a 3-in-1 device: cooling, dehumidifying and ventilation. Inventum includes both a remote control and a window seal kit, so you don't need to buy any extra accessories straight away. And for a 12000 BTU model from a well-known Dutch brand, the guide price of around €430 is entirely reasonable — there are considerably more expensive 12000 BTU models in the shops.

Do keep in mind that 12000 BTU air conditioners are considerably bigger and heavier than their 7000 BTU siblings. Moving one around is easy enough thanks to the castor wheels, but carrying any unit in this class up a flight of stairs is a two-person job.

Strengths:

• Plenty of cooling power: suitable for up to around 40 m²
• Window seal kit and remote control included
• Sharp price for an A-brand 12000 BTU model

Weaknesses:

• Big and heavy, like every 12000 BTU unit
• No wifi or app control

Who it's for: large living rooms and attics where a 9000 BTU model won't cut it, and anyone who wants a complete package from a trusted Dutch brand.

Pro Breeze 12000 BTU — best smart 12000 BTU

The Pro Breeze 12000 BTU portable air conditioner also sits in the heaviest class, but sets itself apart with its smart features. It is a true 4-in-1: cooling, dehumidifying, ventilation and a dedicated sleep mode for the night. Via wifi you can connect it to your smart home, and with the 24-hour timer it switches on automatically before you get home — so it doesn't have to run all day.

Pro Breeze includes the window seal kit as standard and the unit falls into energy class A. Combined with the timer and the app, that keeps consumption well under control — no unnecessary luxury with 12000 BTU models. The guide price is around €420, comparable to the Inventum — choosing between those two mostly comes down to whether you want wifi control (Pro Breeze) or prefer a familiar Dutch brand (Inventum).

Strengths:

• 4-in-1 with a dedicated sleep mode
• Wifi, smart home integration and 24-hour timer
• Window seal kit included, energy class A

Weaknesses:

• Like every 12000 BTU air conditioner, it is no lightweight
• The brand is less well known in the Netherlands than Inventum or Midea

Who it's for: large rooms where you want smart control over the air conditioner — cooling automatically before you get home, for example — without paying extra compared to a regular 12000 BTU model.

MEDION Smart P701 — best compact smart air conditioner

The MEDION Smart P701 portable air conditioner proves that app control is not reserved for expensive models. This 7000 BTU unit (rated up to 25 m²) has wifi with app functionality plus a remote control, and costs around €230 — barely more than bare-bones budget models without any smart features.

It is a 3-in-1 device that cools, dehumidifies and ventilates, and MEDION includes the window seal kit as standard. That makes this package instantly complete for a bedroom or home office: set the unit down, fit the kit in the window, pair the app and you're done. For a student room or home workspace where you want to switch the air conditioning on from your phone in the afternoon, this is the logical choice.

With 7000 BTU you do need to keep your expectations realistic: this model won't cool down a spacious living room or a sweltering attic. For that, look at the 9000 or 12000 BTU models above.

Strengths:

• Wifi and app control in the affordable segment
• Window seal kit and remote control included
• Compact and relatively easy to move

Weaknesses:

• 7000 BTU is only enough for smaller rooms
• Less cooling power per euro than the bigger models

Who it's for: bedrooms and home offices up to 25 m² where app control and a complete package matter more than maximum power.

Tristar AC-5477 — best budget portable air conditioner

The Tristar AC-5477 is the entry-level model on this list: a 7000 BTU unit (2.05 kW) for rooms up to 60 m³ — just over 20 m² — with a guide price of around €185. For that money you get a fully fledged 3-in-1 air conditioner that cools, dehumidifies and ventilates, with a remote control and exhaust hose in the box.

Don't expect wifi, an app or whisper-quiet operation: this is simplicity by design. But if all you want during a heatwave is a cool bedroom without spending much, this will serve you perfectly well. Do note that there is no window seal kit in the box — you will almost certainly want to order one separately, otherwise a large share of the cooling leaks straight back outside.

Strengths:

• Lowest price in this comparison
• Fully fledged 3-in-1: cooling, dehumidifying, ventilation
• Remote control and hose included

Weaknesses:

• No window seal kit in the box
• No wifi or smart features

Who it's for: small rooms and tight budgets — better a properly sized 7000 BTU unit than no air conditioning at all.

Comparison table: the 5 best portable air conditioners

Model	Cooling power	Room size up to	Features	Controls	Guide price
Midea Silent Cool 26 Pro WF	9000 BTU (2.6 kW)	± 31 m²	cooling, dehumidifying, ventilation	app, voice, remote	see current price
Inventum AC125W	12000 BTU	105 m³ (± 40 m²)	3-in-1 + seal kit	remote control	± €430
Pro Breeze 12000 BTU	12000 BTU	± 35-40 m²	4-in-1 + sleep mode, timer, kit	wifi/app, smart home	± €420
MEDION Smart P701	7000 BTU	25 m²	3-in-1 + seal kit	wifi/app, remote	± €230
Tristar AC-5477	7000 BTU (2.05 kW)	60 m³ (± 20 m²)	3-in-1	remote control	± €185

Prices move quickly during air conditioning season; the product pages show today's current prices.

Buying a portable air conditioner: what to look for

Exhaust hose and window seal

Every true portable air conditioner blows warm air outside through an exhaust hose. Without a proper seal on the window or door, that warm air flows straight back in and the unit barely cools at all — you end up paying for electricity for nothing. A window seal kit is therefore the single most important accessory. Check before you buy whether one is included: the Inventum, Pro Breeze and MEDION in this guide ship with one in the box, the Tristar does not.

Noise level

With a portable air conditioner, the compressor — the noisy part — sits right in your room. Many models produce 55 to 65 dB, comparable to anything from a lively conversation to a vacuum cleaner at a distance. If you want to sleep while the unit is running, choose a model designed for quiet operation, such as the Midea Silent Cool at 45 dB, or at the very least a model with a dedicated night or sleep mode that throttles the fan back.

Energy label and consumption

More BTU means more consumption. Check the energy class and think ahead about how you will use the unit: a model with a timer or app control only runs when it is actually needed, and that makes a substantial difference to your electricity costs. As a rough guide, expect 0.8 to 1.3 kWh per hour of operation for the models in this guide.

Dehumidifying function

Dutch summers tend to be muggy rather than scorching. All five air conditioners in this guide can also dehumidify, and that is no gimmick: dry air at 25 degrees feels considerably more comfortable than humid air at the same temperature, while dehumidifying uses less electricity than cooling.

Weight and portability

"Portable" is relative: portable air conditioners easily weigh 20 to 35 kilos. Rolling them around on their castor wheels within one floor is fine, but if you plan to carry the unit from the attic to the bedroom every summer, weight is worth factoring in. Smaller 7000 BTU models such as the MEDION and Tristar are easier to handle than the 12000 BTU heavyweights.

Portable air conditioner, fan or split unit?

Still torn between an air conditioner and a fan? A fan only moves air around and doesn't genuinely lower the temperature, but it is quiet, economical and cheap. If you mainly want relief at night during moderate heat, a quiet pedestal fan such as the popular Fuave Quiet Air SF120DCPW — with nine speed settings and adjustable height — is often all you need; see also our fan buying guide.

A split air conditioner with an outdoor unit cools the most powerfully and the most quietly, but requires installation by a certified fitter, permission from your landlord or owners' association, and a considerably bigger budget.

The portable air conditioner sits right in between: real cooling, no installation, and you move it to whichever room needs it. For renters, and for anyone who only needs cooling a few weeks a year, portable is usually the sensible choice. You'll find more climate products in our household appliances category.

Frequently asked questions about portable air conditioners

How much electricity does a portable air conditioner use and what does that cost per hour?

For models between 7000 and 12000 BTU, expect roughly 0.8 to 1.3 kWh per hour of operation. At an electricity price of around 30 cents per kWh, an hour of cooling therefore costs about 25 to 40 cents. If the unit runs eight hours a day during a hot week, that adds up to roughly €15 to €22 per week. With a timer or app control you limit the running hours to the moments you are actually there — the single biggest saving you can make.

Is a window seal really necessary?

Yes, for all practical purposes it is. The exhaust hose carries warm air outside, but without a seal, warm outdoor air streams continuously back in through the open window the hose hangs out of. The result: the unit runs at full power while the room barely cools. A window seal cloth with a zip costs relatively little, is fitted in fifteen minutes, and makes the difference between an air conditioner that "does something" and a room that actually gets cool.

What is the difference between a single hose and dual hose air conditioner?

A single hose unit (one hose) blows warm indoor air outside. That creates negative pressure in the room, drawing in warm air from other rooms or from outside — which costs efficiency. A dual hose unit (two hoses) draws in outdoor air through the second hose to cool the compressor, so no negative pressure builds up and cooling is more efficient. Virtually all consumer portable air conditioners, including the ones in this guide, are single hose: simpler to set up and cheaper. That is exactly why a good window seal is extra important with a single hose model.

Can you use a portable air conditioner without an exhaust hose?

No. Devices without an exhaust hose are air coolers (evaporative coolers), not air conditioners: they cool by evaporating water, lower the temperature by a few degrees at most and make the air more humid — in a muggy Dutch summer more of a drawback than a benefit. A real air conditioner extracts heat from the room and has to dump that heat somewhere; that is what the hose to the outside is for. Incidentally, the hose doesn't strictly have to go through a window: a balcony door or a ventilation grille works too, as long as the opening is properly sealed.

When is the cheapest time to buy a portable air conditioner?

Out of season: in autumn and winter prices are at their lowest and everything is in stock. During a heatwave prices shoot up and popular models — such as the Midea Silent Cool — sell out at many shops. The prices in this guide are refreshed daily, so you can always see where you get the best deal right now.