Wall ducting is easy and obvious when your rangehood is hung on an outside wall as shown on the image above. But nobody wants to see the ducting when the rangehood is hung on an inside wall and has to traverse to the outside one as shown below. So how do you deal with the unsightly ducting?
Fig. A: With cabinets fitted along the wall, flat retangular ducting can be used over.
Fig. B: With cabinets fitted alongside the wall, a panel can be fitted over to hide the ducting.
Fig. C: With cabinets fitted alongside the wall, a bulkhead can be fitted over, up to the ceiling, enclosing the space.
Where there are no cabinets alongside the rangehood it will probably be necessary to duct through the roof space to the soffit in order to hide the ducting.
Equally suitable for rear-vented freestanding rangehoods and top-vent wall mounted canopies when mounted on an outside wall, the wall kit is easy to install and effective. Depending on where you live, either a wall cowl or a vaned vent will be acceptable for building code with the wall cowl being the most common choice. The easiest ducting choice would be semi-rigid duct, which can be extended in length and bent to shape.
Wall Cowl and Vaned Vent
Incorporating a muffler on top of the rangehood over the outlet (the noisiest part), thiese kits are the quietest ducting solutions you can buy. Rangehood Tamer is available for roof or soffit ducting
With no acute bends to cause back pressure, this is the most efficient way to vent a rangehood. Roof venting allows the rangehood to operate to its full capacity by allowing the air free unrestriced passage.