How To Replace Bathroom Fan Duct

Then remove the fan housing from the ceiling.

How to replace bathroom fan duct. Remove the exhaust duct from the fan too. Wrap the joints with duct tape. Place the wires together and use plastic connectors to join them. Unscrew the junction box cover on the side of the fan housing and pull out the three wires.

Follow steps 3 10 of the new construction installation to complete. Measure the ceiling opening and determine if it is large enough to accommodate your new fan. Slide clamps over the flexible duct at both the roof cap and the fan housing then slip the clamps over the tailpieces. Actually we ended up replacing the bathroom vent duct instead.

If not you must cut around. Disconnect any additional electrical and pull the house wire out of the fan housing. Our duct was originally 4 wide but because of the larger hole in the roof left by our builder i opted to use a 5 gasket in order to bridge the gaps at the roof vent and replace the 4 ductwork with 5 fittings. This fan was not removing the steam from the bathroom during showers and we both assumed the fan was the culprit.

Move the housing around in the hole so you can access the electrical and duct. In one bath i put in an 80cfm at only 8 sones and i can bareley tell its on but it cost twice as much as the 2 sones model. Having said that they make quiet and strong fans they just cost more. But you should not replace it without permission if the landlord recently replaced it it was probably due to moisture issues.

Attach the wires in the fan housing to the corresponding colored wires in your ceiling or attic that ran to the old fan housing. Switch off the power at the fuse box. When i inspected and tested the fan i found the fan severely corroded and not pulling air well. Read on to see how we figured out the issue.

To maximize performance try to match your duct diameter to the new fan.