We have an Icon 60 150mm extractor fan in the kitchen which uses 6 inch flexible ducting. The ducting needs replaced as it has a couple of holes which I just discovered (the builders had covered them in tape 5 yrs ago which is now failing). The ducting run is roughly 4 m long and vents through the soffit. The outside grille happens to be an addvent 4 inch grille & the ducting looks like it has just been placed over the top without being secured on - I'm guessing a 6 inch grille should have been used but the soffit isn't wide enough.
Just wondering what is the best thing to do here?
My 1st thoughts were to replace with again 6 inch flexible ducting & use a reducer to reduce the ducting at the end to 100mm to fit the external grille but then i thought it would be difficult/impossible to do as I'm guessing the hole in the soffit would be too small to pull the 6 inch ducting through from the outside. I think it would be too tricky to fit it from the inside due to how narrow the roofspace gets.
Could we simply use 4 inch/100 mm flexible ducting with a reducer at the fan connection or would the airflow be too poor? This certainly seems the easier option but I'm no expert and I'm guessing it would reduce the efficiency of the fan
Any other suggestions? My husband's friend is an ex bathroom fitter and we were going to ask him to do the job.
Thanks.
Just wondering what is the best thing to do here?
My 1st thoughts were to replace with again 6 inch flexible ducting & use a reducer to reduce the ducting at the end to 100mm to fit the external grille but then i thought it would be difficult/impossible to do as I'm guessing the hole in the soffit would be too small to pull the 6 inch ducting through from the outside. I think it would be too tricky to fit it from the inside due to how narrow the roofspace gets.
Could we simply use 4 inch/100 mm flexible ducting with a reducer at the fan connection or would the airflow be too poor? This certainly seems the easier option but I'm no expert and I'm guessing it would reduce the efficiency of the fan
Any other suggestions? My husband's friend is an ex bathroom fitter and we were going to ask him to do the job.
Thanks.
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