Chris2

Hi thank you for your reply. They are in the filter of the mvhr. It’s only on one side of the unit which is where the air come in and out from the main house. When you take out the filter it’s on the top side if that make sense. I think that the heat exchange matrix is on the other side? But unsure?

Hi Mike, no clothes at all as we have not moved in yet. So absolutely nothing.

Hi, I have drawned the area of the filter where I am finding live months and being told that they are probably sucked in from the extract air areas (bathrooms etc…)? How would you fumigate the system please?

Hi We entirely renovated an old house, creating a large new extension. Prior to the work, we noticed that the previous owners had a moths infestation in some old carpet. Even though we did not move in the house, we decided to treat the house with pesticide twice prior to starting the work. The house was then literally fully torn apart, exposed to the elements, new areas being created ect….. As we were finishing the last elements, I discovered , to my horror, that the moths have come back… unsure how and what the larvae are feeding on as we have NOTHING in the house apart from new floors etc….. no soft furnishing, nothing obvious that the larvae could feed on… yet we are seeing some life cycle with small moths and large moths around… We have a MVHR system (mechanical ventilated heating Recovery system) throughout the house, underfloor heating everywhere with screed on floor in the new part and latex on the -1st floor …mix of wooden floor and there will eventually be (manmade) carpet in some areas. I have spoken to many pest control companies, moths experts, who are all saying the same thing, there must be a food source somewhere…. But where? We notice about 15-20 moths in the “In house” mvhr filter everyday - all at different life stages ie small and big moths. They also seem to be more present in the rooms where air is being supplied. Can those pests live in the mvhr system? Anyone has ever had experience of this please? Can you “flush out” the system? Or can we send cameras in the pipes to investigate? Thank you in advance! Chris.

Hi my name is Chris and just completed a big renovation project (second one). Looking forward to get some advice on a few areas. Looks like a great forum! Wish I had found it earlier! Chris