Exhaust Fans – Installation Tips / Kitchen and Bath
Installation Tips
I know this sounds crazy, but be sure to carefully follow the instructions that come with your fan. The single biggest reason for problems with exhaust fan installations is failure to follow directions. It only takes five to 10 minutes to read instructions.
Be sure to use the recommended ductwork. Don't mix and match sizes, as you will affect the static pressure load on the fan!
For kitchen exhaust fans, be sure to use metal ductwork! Tape all joints with high quality duct tape. Fires are a real possibility.
Try to locate fans so that the duct run is as straight and short as possible. Remember, a 90 degree bend or elbow is often equivalent to 10 linear feet of duct run. Most fans have a limit to the total length of duct. Pay attention to this number!
Each exhaust fan has a discharge port where the exhaust air leaves the fan. This discharge port may be three, four, five or six inches in diameter. Do not, on your own accord, reduce the size of the duct between this port and your exterior termination cap.
I have found that it is often best to vent fans and dryers through the roof. I urge you to watch this video of mine to see how easy it is to install the correct vent-cap flashing on a roof. Have no fear - if done right you will have no leaks.
who do i call to replace the grill which covers the duct which exits the exterior of the house.i have 2 kitchen's and 2 bath's which need to be repaired.all of these repairs are up in the air on the 2nd and 3rd floor.i'd do it myself but i'm 75 yrs old now and a little unsteady.the birds have been nesting inside the open ducts to lay their eggs.they are smart,it's a good place to raise their baby's.any ideas would be most helpful.regards,brian.
Brian, you need to schedule a 15-Minute call with me.
Hi Tim
I am going to try and install a kitchen range hood vent. I have to run 8 inch vent pipe for a 600cfm blower. I have to go up into my second floor bedroom than out of the attic. I know I have to insulate with a sleeve for the attic, but my question is will I have to wrap the vent pipe that is in the bedroom also?
Yes
Hello,
My existing system has 5" duct. I want to replace the present system which is built in above the stove, with a more powerful system that has 7" opening. I was told by an installer that he can put a connector and the system will work fine, i.e. will remove the air as specified on it. His opinion is that I do not have to replace the 5" duct for it to perform to its capacity.
Please advice.
Thank you.
Where should I place exhaust fan in room on above the window or door