What you need to know about VDI 2035
The VDI 2035 standard is an important guideline for the design, installation, filling and maintenance of heating systems (<100°C) in buildings. This standard lays the foundation for trouble-free operation and a long service life of modern heating systems.
Why is VDI 2035 important?
Today's energy-efficient heating systems are designed to perform at their best, but they also place higher demands on system water quality. Modern components such as compact heat exchangers and efficient pumps are more sensitive to:
- Hardness: May cause limescale build-up and reduce heat transfer.
- Dirt: Can cause blockages and damage to delicate parts.
To avoid these problems, many manufacturers require the heating water to meet the specifications of the VDI 2035 standard. Failure to comply with these guidelines can not only lead to technical problems, but also to the invalidity of warranty claims.

Protect your installation according to VDI 2035
Adhering to the VDI 2035 guidelines helps you to:
- Prevent malfunctions and defects
- Extend the life of your system
- Comply with manufacturers' warranty conditions
With the right products from Spirotech, such as air separators, dirt separators and degassing and pressure maintenance systems, you can ensure that your installation fully complies with the VDI 2035 standard.