planning

Heat loss calculation in accordance with DIN EN 12831 — AI-supported, precise, standard-compliant

Manual heat loss calculations cost time and are prone to errors. autarc simplifies the process with AI and LiDAR technology — for fast, precise results and more efficient projects.

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What is a heat loss calculation?

A heat loss calculation determines the necessary heat output so that a building is kept at a desired indoor temperature at the coldest outside temperatures. The heat load calculation in accordance with DIN 12831 is a standardized procedure. It takes into account structural conditions, climatic conditions and usage-related factors. The aim is to precisely determine transmission and ventilation heat losses. This forms the basis for efficient heating planning and eligible renovation.

planning

How does heat loss calculation work with autarc?

The heat loss calculation with autarc is carried out in four easy steps: First, enter building information such as postal code, year of construction and heating system. You then define central U-values for windows, walls, or roof. Then enter the rooms via LiDAR scan (with premium subscription) or manually (with basic subscription). Finally, the software checks all data, calculates the heat load in accordance with DIN EN 12831 and automatically creates a standard-compliant report.

Step 1: Enter building information
Step 2: Set central U values
Step 3: Scan rooms (or enter them manually)
Step 4: Check, calculate and report

What is a U-value?

The autarc app for heating loss calculation offers you numerous advantages

Time savings: Create a complete heat load calculation in minutes instead of hours.
High accuracy: LiDAR scanning and AI-based analysis ensure accurate results.
Error reduction: Automated processes minimize manual input errors.
DIN compliance: The calculation is carried out in accordance with DIN EN 12831.
Eligibility: Secure the basis for government funding.
Efficient workflow: From scan to report — everything is digital and seamless.

Are you interested? Just try it out for yourself.

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Map technical details precisely

Flexible system layout

Define heating circuits individually

Create any number of heating circuits and assign them to individual rooms or heating surfaces. In this way, you can also easily map complex systems such as floor heating with multiple zones.

Determine components

Set or calculate U-values centrally

Set U-values directly, use standard values or calculate them with the integrated U-value calculator. Materials and thicknesses can be individually adjusted — for maximum accuracy.

furtherance

Standard-compliant calculation for subsidies

For funding programs such as the KfW subsidy 458, a heat load calculation in accordance with DIN 12831 is mandatory. The software carries out all necessary calculations in accordance with standards and automatically creates the complete documents.

Register now and test live

Take the opportunity to test the autarc software free of charge for 14 days. Set up in just 3 minutes, ready for immediate use — no installation required. Can be canceled at any time.