Air pollution control
Ordinance on Air Pollution Control for wood heating systems
The Swiss Ordinance on Air Pollution Control (OAPC) prescribes emission limits for various types of systems, including wood heating systems. In the course of the revision of the OAPC, the permissible emission limits from wood combustion have been tightened.
In the years to come, wood heating systems will only be able to comply with the dust emission limit with suitable cleaning systems.
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Find out more
The original wording of the Ordinance on Air Pollution Control and all changes published to date can be found on the official homepage of the federal authority: admin.ch
Detailed information about fine dust can be found on the Cercl’Air site Feinstaub macht krank (‘Fine dust damages health’): feinstaub.ch
The emission limits of the Ordinance on Air Pollution Control for dust
| Emission limits of OAPC for solids (dust) in mg/m³ | up to 70 kW | 70 kW - 500 kW | 500 kW - 1 MW | 1 MW - 10 MW | over 10 MW |
from 1 January 2008 | - | 150 mg/m³ | 20 mg/m³ | 20 mg/m³ | 10 mg/m³ |
| from 1 January 2012 | - | 50 mg/m³ | 20 mg/m³ | 20 mg/m³ | 10 mg/m³ |
| from 11 April 2018 | 50 mg/m³ | 50 mg/m³ | 20 mg/m³ | 20 mg/m³ | 10 mg/m³ |
Examples of suitable cleaning systems include our electric filters.
A selection of modular e-filters can be found here.
Readings of emission measurements with and without the electric filter
Simultaneous emission measurements with and without the electric filter reveal an efficiency factor between 91 and 98%. All measurements are in mg/m³ and quoted under normal conditions with an oxygen level of 13% and can therefore be directly compared with the emission limits of the Ordinance on Air Pollution Control (OAPC).
“Measurement 4” includes cleaning of the filter tubes of around two minutes.
Without filter
With filter
Measurement 1
Measurement 2
Measurement 3
Measurement 4
