Hydraulic balancing in accordance with method B
Hydraulic balancing with autarc: Optimum heat distribution in just 10 minutes. Save up to 12 hours per project with AI-supported calculation using method B.

What is hydraulic balancing?
Hydraulic balancing optimizes heat distribution in heating systems by precisely calculating volume flows. Method B determines the exact water flow rate for each radiator based on the actual heating load. In this way, every room is heated evenly and energy is saved. Hydraulic balancing is mandatory for KfW and BAFA subsidies and reduces heating costs by up to 15 percent.
How does hydraulic balancing work with autarc?
Autarc automatically calculates the optimal flow rates for your heating system. Based on the heat load and the selected spread, the software determines the exact setting values for each valve. You simply select your valve model from the extensive database and immediately receive the correct settings. The system works equally precisely for radiators and floor heating.
- Step 1: Record heat load
- Step 2: Select valves
- Step 3: Set the spread
- Step 4: Get settings
Benefits of hydraulic balancing with autarc
- Time savings: Automatic calculation completely replaces time-consuming manual calculations and Excel spreadsheets.
- Accurate results: The AI-based calculation minimizes errors and ensures optimal heat distribution in every room of the building.
- Wide range of valves: More than 500 valve models from leading manufacturers such as Danfoss, Honeywell and Oventrop in the database.
- Eligible documentation: Automatically generated reports fully meet all requirements for KfW and BAFA funding.
- Flexible use: Works equally reliably for radiators and floor heating as well as for new buildings and renovations.
- Can be used immediately on site: Mobile app enables calculation and adjustment directly at the customer's site without additional software or hardware.
Hydraulics and documentation under control
Hydraulic Balancing FAQ
Why is hydraulic balancing in accordance with method B important?
Method B is mandatory for all subsidies and ensures optimum heat distribution. It reduces heating costs by up to 15 percent and prevents oversupply or undersupply to individual rooms through precise volume flow calculation.
How long does hydraulic balancing take with autarc?
With autarc, the complete calculation only takes 10 to 15 minutes. The automatic calculation of volume flows and valve settings replaces hours of manual calculations and reduces time by up to 12 hours per project.
Which valves are supported by autarc?
autarc supports over 500 valve models from all leading manufacturers such as Danfoss, Honeywell, Oventrop and Heimeier. Both pressure-dependent and pressure-independent valves are stored in the database with all current models and settings.
Is hydraulic balancing also possible for floor heating?
The autarc software calculates hydraulic balances for radiators and floor heating equally. The system automatically takes into account the different spreads and flow rates and provides precise settings for all heating circuits and distribution stations.
When is hydraulic balancing mandatory?
Hydraulic balancing is mandatory for all KfW and BAFA subsidies. It is also required for heating replacements, energy renovations and new buildings. Funding will not be paid out without correct reconciliation.
What makes autarc different from manual calculation?
autarc replaces Excel spreadsheets and manual calculations with AI-based automation. This reduces errors, saves time and automatically creates eligible documentation. The calculation is carried out in accordance with VDI 2073 and the requirements of the GEG (Building Energy Act).