We have accepted enforceable undertakings from air conditioning and refrigeration company Airtech Limited, and vegetable packaging and marketing company NZ Hot House Limited, following an incident in July 2016 where workers were unnecessarily exposed to carbon monoxide. Two Airtech workers were working to clean an evaporator unit in a chiller; they were using an LPG forklift operated by an NZ Hot House worker. After two hours working on the unit, an Airtech worker began to feel unwell and stopped working. The other Airtech worker and the forklift operator continued working, before they both fainted as a result of carbon monoxide…