# What size dehumidifier for 15 m²? (litres per day)

> What size dehumidifier for 15 m²? Recommended: 12–16 litres/day. Capacity, running cost (~€0.09/h) and what to look for in a bedroom or home office.

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Damp air, condensation on the windows or a musty smell in a room of around 15 m²? A dehumidifier fixes that — but only with the right capacity. Too small, and it never catches up. Here is the concrete recommendation for 15 m².

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**Quick answer:** For 15 m², choose a dehumidifier with **12–16 litres/day** of extraction capacity. Running it costs about €0.09 per hour (at €0.30/kWh) — much less with a humidistat, which switches off at the target humidity.

## How many litres per day for 15 m²?

15 m² needs about 12–16 litres/day of extraction capacity. Size up for basements, ground floors, lots of indoor laundry drying, or after water damage. The manufacturer's litres/day figure is measured under warm, very humid lab conditions — real-world extraction is lower, which is another reason not to undersize.

## The full size ladder

Room size | Extraction capacity | Typical room |
[10 m²](https://getecoback.com/en/guide/dehumidifier-10-sqm.html) | 10–12 litres/day | bathroom or small room |
**15 m² (this page)** | 12–16 litres/day | bedroom or home office |
[20 m²](https://getecoback.com/en/guide/dehumidifier-20-sqm.html) | 16–20 litres/day | living room or bedroom |
[25 m²](https://getecoback.com/en/guide/dehumidifier-25-sqm.html) | 20 litres/day | larger living room |
[30 m²](https://getecoback.com/en/guide/dehumidifier-30-sqm.html) | 20–25 litres/day | open-plan living area |
[40 m²](https://getecoback.com/en/guide/dehumidifier-40-sqm.html) | 25–30 litres/day | basement or very large room |

## Recommended unit for 15 m²

Dehumidifier · 12–16 l/day
A **12–16-litre compressor dehumidifier** with a humidistat fits a bedroom or home office. The humidistat switches off automatically at the target humidity — that is where the real electricity saving is. We do not test units ourselves; picks summarise public tests.

✓ Against mould & damp   ✓ Frugal with a humidistat   ✕ Some operating noise

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Check the price on Amazon.de →

## What does running it cost at 15 m²?

A compressor dehumidifier draws about 300 W, so roughly **€0.09 per hour** (calculated at €0.30/kWh — put in your own tariff). With a humidistat it only runs until the target humidity is reached, so real-world cost is well below continuous operation. Keeping the room below about 60 % relative humidity is what takes away the basis mould needs.

## Frequently asked questions

**How many litres per day do I need for 15 m²?**As a rule of thumb, 12–16 litres/day. 15 m² needs about 12–16 litres/day of extraction capacity.

**What does a dehumidifier for 15 m² cost to run?**A typical compressor unit draws about 300 W, so roughly €0.09 per hour (at €0.30/kWh). With a humidistat it only runs until the target humidity is reached, then barely at all.

**Does a dehumidifier help against mould in a 15 m² room?**Yes — by keeping relative humidity below about 60 % it removes the basis mould needs to grow. A humidistat that switches off automatically at the target level is ideal for this.

**When should I size up?**Pick the next capacity class up for basements, ground-floor flats, frequent indoor laundry drying, or after water damage — persistent moisture sources outpace an exactly-sized unit.

**Matching dehumidifiers for 15 m² on Amazon.de** — check litres/day and the humidistat:

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See dehumidifiers →

**More guides**
[What size electric heater for 15 m²? →](https://getecoback.com/en/guide/electric-heater-15-sqm.html)
[Drying laundry indoors: what a dehumidifier costs →](https://getecoback.com/en/guide/dehumidifier-drying-clothes-cost.html)
[Portable AC smells musty? Clean it before storing →](https://getecoback.com/en/guide/portable-ac-smells-musty.html)
[Diese Seite auf Deutsch →](https://getecoback.com/guide/luftentfeuchter-15-qm.html)

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