Hi, I have fitted a new stainless steel chimney-type cooker hood in my kitchen which has been making load rattling noises ever since it was installed 9 months ago. The noise happens whenever there are two or more large gas rings on at the same time and the noise sounds like there is something loose rattling in the [centrifugal] fan. It happens on all three speed settings, even the lowest and I have tried on several occasions to track down the cause including dismantling the fan several times.
It appears that the unit is quite happy at all fan speeds and with all burners on ONLY IF I DISCONNECT THE OUTLET DUCT. It must be that the back-pressure is too high as the ducting (which is based on approx five meters of flexible ducting
It may be that I WILL need to re-route the ducting in more direct route to the outside however this is a big job which will leave an unsightly pipe running through our utility room. Before I consider this, I am wondering whether it would be possible to fit an additional fan as a booster in line with the existing ducting, which would be switched on at the same time as the built-in centrifugal fan.
I know that some chimney-type cooker hoods have remote motors, however I have not seen these items advertised on their own. I am not prepared to splash out a large sum on something that may not work, but if there is a product on the market which is for precisely my problem (long ducting) then could someone point me in the right direction, or perhaps suggest an alternative solution.
Thanks in advance
Steve Harvey
steveharvey [at] dsl [dot] pipex [dot] com