Alisorrell

Hi, We built our certified passivhaus some 8 eight years ago and am delighted with it. However, cleaning the filters the other day, which I do say every four months or so, the amount of insects in there made me think. I looked at previous posts about this and suggestions about putting a filter on. But these posts seemed to be more about the functionality of the machine rather than damage to insect life. Any thoughts? I would hate to think my lovely green house is actually damaging wildlife quite contrary to the whole philosophy. Alison T