🗓 Updated July 9, 2026 · EcoBack editorial team
Installed air conditioning in much of Europe costs over €1,000 and comes with weeks-long waitlists during a heatwave — and if you rent, you often can't install it at all. Here are the cheapest no-installation ways to cool down, from €30 up, with what each is actually good for.
The one number every purchase hangs on — it is already worked out below. Adjust the room size if it is off.
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Every portable unit here: no drilling, no installer, usually no landlord permission — hose to the window, seal around it, running in about 10 minutes, and it moves out with you. The one condition: without a sealed window every portable AC loses most of its effect — hot air gets pulled straight back in. Compiled from public tests & customer reviews — not tested by us. Prices vary; check the current price on Amazon. Illustrations, not product photos. Amazon.de ships to most EU countries, with site and checkout available in English.
De'Longhi PAC N90 ECO Silent
Monoblock test winner at Stiftung Warentest, silent mode, R290 refrigerant.
✓ Quietest monoblock in its group
✕ Pricier than the value pick
Comfee MPPH-09CRN7
Affordable for small bedrooms & offices — but clearly audible.
✓ Cheap, compact
✕ Clearly audible (~63 dB)
AEG ChillFlex Pro
Comfortable in the bedroom, well equipped.
✓ Very quiet, well equipped
✕ Higher price
Klarstein Kraftwerk Smart 12K
Strongest cooling of its group in public comparisons.
✓ Strongest cooling of its group
✕ Audibly loud
De'Longhi Pinguino PAC EX105
Strong cooling, often in the test-winner line.
✓ Strong cooling, good efficiency
✕ Big & heavy
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These are the models US reviewers keep picking — compiled from public tests, not tested by us. Prices change; check the current price on Amazon. Illustrations, not product photos.
Midea Duo MAP14HS1TBL
Dual-hose inverter — it takes its exhaust air from outside instead of from your room, which is the flaw single-hose units have. Repeatedly the overall pick in US tests.
Whynter NEX ARC-1230WN
Rated for noticeably larger rooms than the usual portable unit.
Black+Decker BPACT14WT
The common budget recommendation; US reviewers note it struggles in big or west-facing rooms.
It draws in warm room air, cools it and returns it — the waste heat leaves through the window hose. Real cooling, not just moving air around.
1. Tower & pedestal fans — from ~€30
The cheapest relief. A fan won't lower the room temperature, but moving air over your skin makes a big difference, especially at night. A quiet tower fan is the single best value if your budget is tight.
2. Evaporative air cooler — from ~€60
An air cooler evaporates water to chill the air it blows out. It works best in dry heat and needs no window kit — just fill the tank. Cheaper to run than an AC and totally renter-friendly, though it adds humidity, so it's less effective in already-muggy flats.
See air coolers on Amazon.de →
3. Dehumidifier — from ~€120
If your flat feels muggy rather than just hot, humidity is the culprit. Drying the air can make 28°C feel noticeably cooler and helps you sleep — often for less electricity than an AC. Great for damp ground-floor flats.
See dehumidifiers on Amazon.de →
4. Portable air conditioner — from ~€250
The only no-installation option that genuinely lowers the temperature. It vents hot air out a window via an included hose kit. More expensive and needs a ventable window, but nothing else truly cools a hot bedroom. Match the BTU to your room size.
See portable air conditioners on Amazon.de → · full portable AC buying guide →
No usable window in the room? See the 5 real venting routes without a window →
Quick recommendation
- Under €60: a good tower fan — best value for pure airflow.
- Dry heat, no window venting possible: an air cooler.
- Muggy flat: a dehumidifier, sometimes alongside a fan.
- You need to actually drop the temperature to sleep: a portable AC, no way around it.
Find the right unit — honestly recommended
Specific models with a role, compiled from public reviews (not tested by us) — plus free calculators for the right size.
See the top picks →