What is Combustion inspection?
A combustion inspection is an official emissions measurement on heating systems. Its legal basis is the Swiss Clean Air Ordinance (LRV), which sets limits for oil, gas and wood firing – for example for carbon monoxide (CO), soot number and combustion losses. Depending on the canton and municipality, responsibility lies with the cantonal combustion-control office or the local chimney-sweep company. The aim is to keep air pollution low and ensure economical, safe operation.
During the appointment, the specialist uses a flue-gas analyser to measure values directly in the exhaust pipe, checks combustion quality and efficiency, and inspects visible safety aspects. At the end you receive a measurement report with the recorded values and a verdict of «passed» or «not passed». If limits are exceeded, a deadline for corrective action is set.
The inspection takes place at recurring intervals; how often depends on the fuel and the cantonal rules (wood and oil heating are usually measured more frequently than modern gas appliances). A measurement is also typically due after installing or substantially modifying a heating system.
Look for an officially licensed specialist, a clear, traceable report and transparent cost information. Common mistakes: ignoring the inspection notice, not warming up the heating before the appointment, or postponing due servicing of the system – poorly maintained burners fail more often.