Company Profile We solve your exhaust air problems as effectively and economically as possible LESNI A/S specialises in providing standard technology packages and innovative solutions for waste air purification. Our target is to remove and deplete irritating odour emissions, toxic gases, solvents, dust and aggressive gases. For the past 25 years, we have designed, supplied and installed more than 1000 air purification plants worldwide. These high-tech installations cover a wide spectrum of air volumes ranging from 50 m³/h to 400,000 m³/h. LESNI tailor made systems are designed and engineered with customer specification in mind, to meet local and international legislations and standards with great emphasis to safety, reliability and energy conservation.