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title: "Vad är BTU? Så väljer du rätt AC-system | ESTG"
description: "Lär dig vad BTU betyder och varför det är avgörande för att välja rätt luftkonditionering – för komfort och effektivitet."
type: information-resource

---

# ESTG

# What is BTU? Everything you need to know.

You’ve probably heard the term before: **BTU**. But what exactly does it mean? And why is it so important when choosing the right **[air conditioning](/assortment/heating-cooling/air-conditioners/)** system? Don’t worry, we’ll break it down for you.

## BTU: The basics

BTU stands for **British Thermal Unit**. In simple terms, it’s a measurement of an air conditioner’s cooling capacity. It indicates **how much heat an AC unit can remove from a room per hour**. The higher the BTU rating, the more powerful the air conditioner.

## Why is BTU important?

Choosing the correct BTU rating is essential for creating a comfortable indoor climate.

- A **BTU rating that’s too low** means the air conditioner won’t be able to cool the room sufficiently.
- A **BTU rating that’s too high** leads to energy waste and can cause uncomfortable drafts and temperature fluctuations.

## How to determine the right BTU?

The required BTU depends on several factors:

- **Room size**: Larger rooms require more cooling capacity.
- **Insulation**: Good insulation reduces the workload on the AC.
- **Sunlight exposure**: Bright, sunny rooms need more cooling power.
- **Number of people**: The more people in the room, the higher the BTU requirement.
- **Heat-emitting equipment**: Devices like computers or ovens generate heat and increase cooling demand.

## Practical tips for installers

- Don’t rely solely on square meters. Consider all influencing factors.
- Provide honest, expert advice to help customers avoid future issues.
- Use BTU calculation tables and formulas to explain your recommendations.
- Understand how much heat specific equipment produces and factor it into your estimates.

Explore **[our wide selection](/assortment/heating-cooling/air-conditioners/)** of high-quality air conditioners from **[LG](/brands/lg-electronics/)****,** **[Daikin](/brands/daikin/)****,** **[Mitsubishi Heavy](/brands/mitsubishi-heavy/)**, and **[Mitsubishi Electric](/brands/mitsubishi-electric/)** to meet every customer’s cooling needs.

## BTU calculation table (based on European averages)

*Note: This table provides general guidance only. Always consider local conditions and individual use cases.*

### Additional factors to consider

- **Occupants**: Add approx. 600 BTU per additional person in the room.
- **Appliances**: Add BTU for heat-generating equipment like computers, TVs, kitchen appliances. The exact value depends on the type and usage.
- **Windows**: Large, sun-exposed windows increase BTU needs significantly.
- **Location**: Top-floor apartments or buildings with flat roofs tend to accumulate more heat.
- **Regional climate**: Warmer regions, such as Southern Europe, often require higher BTU values.

### How to use the BTU table

1. Measure the **area** of the room (length × width).
2. Determine the **ceiling height**.
3. Evaluate the **insulation** (good, average, poor).
4. Assess the **sunlight exposure** (low, medium, high).
5. Use the table to estimate the required BTU value.
6. Adjust the value according to the additional factors mentioned above.

**Still have questions about BTU or choosing the right AC system?**
Feel free to **[contact our expert team](/about-estg/contact)**. We’re happy to help!