I have a mains compressor nebuliser on loan from the hospital and for the past 3 years have also been using the omron micro air when out and also when I don't want to keep the familu awake. Recently I have found that it has started leaking, despite changing the mesh in September. I'm not sure whether to replace it and was considering the respironics micro elite. I can't seem to find any info on the noise level and as I would use it at night this is important. Does anyone know how noisy it is?