# What size electric heater for 50 m²? Wattage guide

> What size electric heater for 50 m²? Recommended: 3,000–4,000 W (60–100 W per m²). Running cost about €1.05/h and the honest season maths.

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Heating a room of around 50 m² with an electric panel or infrared heater? It works — but only with the right wattage and honest expectations about the electricity bill. Here is the concrete recommendation for 50 m².

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**Quick answer:** For 50 m² you need about **3,000–4,000 W** of heating power (rule of thumb: 60–100 W per m², depending on insulation). At full power that costs about €1.05 per hour at €0.30/kWh — a thermostat brings the real-world figure well down.

## How many watts for 50 m²?

50 m² can only be heated electrically with several panels (3,000–4,000 W in total) — as a permanent solution a heat pump is more economical here; infrared remains a zone or supplementary heater. Well-insulated new buildings sit at the lower end of the 60–100 W per m² band, old buildings with high ceilings at the upper end.

## The full size ladder

Room size | Heating power | Typical room |
[10 m²](https://getecoback.com/en/guide/electric-heater-10-sqm.html) | 600–800 W | small office or bathroom |
[15 m²](https://getecoback.com/en/guide/electric-heater-15-sqm.html) | 900–1,200 W | home office or small living room |
[20 m²](https://getecoback.com/en/guide/electric-heater-20-sqm.html) | 1,200–1,600 W | living room or bedroom |
[25 m²](https://getecoback.com/en/guide/electric-heater-25-sqm.html) | 1,500–2,000 W | larger living room |
[30 m²](https://getecoback.com/en/guide/electric-heater-30-sqm.html) | 1,800–2,400 W | open-plan living area |
[40 m²](https://getecoback.com/en/guide/electric-heater-40-sqm.html) | 2,400–3,200 W | very large or open-plan room |
**50 m² (this page)** | 3,000–4,000 W | very large open area |

## Recommended setup for 50 m²

Electric heating · 3,000–4,000 W
An **infrared panel (or set of panels) totalling 3,000–4,000 W** with a thermostat fits a very large open area. The thermostat is where the saving is — it cycles the panel instead of heating continuously. We do not test units ourselves; picks summarise public tests.

✓ No installation, plugs into a socket   ✓ Silent, no moving parts   ✕ Electricity is an expensive way to make heat

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## What does heating 50 m² cost?

At full power, 3,500 W draws about **€1.05 per hour** (calculated at €0.30/kWh — put in your own tariff). For a season: with 5 heating hours a day, a thermostat duty cycle of about 40 % and 150 heating days that is roughly **€315 per season**. The formula is transparent: watts ÷ 1000 × price × hours × duty cycle × days. Electric resistance heating turns one kilowatt-hour of electricity into exactly one kilowatt-hour of heat — that physics is why a heat pump beats it for whole-home, all-winter heating.

## Frequently asked questions

**How many watts of heating power do I need for 50 m²?**As a rule of thumb 3,000–4,000 W (around 60–100 W per m², depending on insulation). 50 m² can only be heated electrically with several panels (3,000–4,000 W in total) — as a permanent solution a heat pump is more economical here; infrared remains a zone or supplementary heater.

**What does heating with 3,500 W cost?**At full power a 3,500 W heater draws about €1.05 per hour (at €0.30/kWh). A thermostat lowers that considerably, because it does not heat continuously.

**What does a heating season cost for 50 m²?**With 3,500 W, 5 heating hours a day, a thermostat duty cycle of about 40 % and 150 heating days you end up at roughly €315 per season (at €0.30/kWh). Recalculate with your own tariff: watts ÷ 1000 × price × hours × duty cycle × days.

**Is an electric panel heater enough as the only heating for 50 m²?**Only just — at this size you need several panels, and as the sole heating in deep winter it is borderline. A building heat pump is usually more economical for rooms this large; electric panels remain a zone or supplementary heater.

**Matching heating panels for 50 m² on Amazon.de** — check total wattage and the thermostat:

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See heating panels →

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