You don't need to spend much to stay cool — in fact, the most effective cooling is free. Here's how to beat a German heatwave on a budget, ranked from no-cost habits to low-cost gear, so you get the most relief for the least money.
Start with the free stuff
Before buying anything, use the tactics that cost nothing:
- Shade windows from outside before the sun reaches them — the single highest-impact move.
- Ventilate only at night when it's cooler outside (see our Stoßlüften guide).
- Close off hot rooms and concentrate on one space.
- Switch off heat sources — oven, dryer, idle electronics.
Done well, these keep a flat noticeably cooler for free, and reduce how much paid cooling you need at all.
Cheapest device: a fan
When you do buy, start with a fan. It's the cheapest cooling device to both buy and run, using a tiny fraction of an air conditioner's electricity while making you feel several degrees cooler. A budget table or pedestal fan delivers excellent value — see our fans under €30 guide. For most budget cooling, a fan plus good habits is all you need.
Add a frozen bottle for free boost
For a few extra degrees at no real cost, put a frozen water bottle or bowl of ice in front of the fan so the airflow picks up the chill (see our fan-and-ice guide). It's the cheapest way to upgrade a basic fan's cooling, using ice you already have in the freezer.
Next step up: an air cooler
If a fan isn't quite enough and your heat is dry, an evaporative air cooler is the budget-friendly middle step. It cools the air a few degrees for low running cost and no hose. It costs more than a fan but far less than an AC to buy and run — good value when dry heat calls for a bit more than a breeze.
Last resort for budgets: a mobile AC
A mobile AC cools most but costs most to buy and run, so on a budget it's the last resort — for a genuinely unbearable bedroom or top-floor flat where nothing cheaper works. If you do buy one, keep its running cost down by cooling one sealed, shaded room and using timers.
Spend on the right device for the day
The smartest budget strategy isn't one device — it's using the cheapest one that does the job. Free habits and a fan handle most warm days; an air cooler handles dry-heat afternoons; the AC is for the worst nights only. Matching the device to the day keeps both your discomfort and your bill low.
The takeaway
Cooling on a budget means free habits first, then a fan, a frozen bottle, an air cooler for dry heat, and an AC only when truly needed. Spend on the cheapest device that works, run it smartly, and you'll beat the heat without a big bill. Check which budget fans and coolers are in stock near you.