Example of mounting plate made to cover hole in drywall from old fan
PROBLEM:
Noisy, underpowered bathroom fans = inadequate ventilation
The truth is, noisy bathroom exhaust fans lose much of their effectiveness, simply because people don't want to use them. So, odor, moisture, mold and mildew build up. Even the most elegant bathrooms become unattractive, and may suffer long-term damage. Excess pollutants are not only detrimental to your health, but can also lead to the deterioration of structure supports and walls. As the trend to larger spa-like bathrooms continues to gain in popularity, the need for proper ventilation becomes more important.
SOLUTION:
In-line exhaust fan featured project
Benefits:
- Near silent fan operation
- Adequate ventilation for your bathroom
- A stylish addition to bathroom decor
- Worry free operation and energy savings
Convert your noisy bath fan to a quiet, stylish ventilation and illumination solution. This project assumes that there will be an attic overhead and there will be ample space above the ceiling.
The project starts with a lighted exhaust grille assembly installed in the ceiling in place of the existing fan. If a large hole is left where the old fan is removed - the drywall can be repaired or a decorative mounting plate can be built to cover the hole. The grille assembly includes a mounting box with hanger bars to help secure it between ceiling joists. The grille assembly also includes an integrated backdraft damper - to prevent cold or hot air from coming back into the bathroom.
A length of insulated flexible duct will run from the grille assembly to inlet of the inline fan - 6-8 feet away. The fan can be mounted in any orientation to any type of attic framing member using an included mounting bracket. Mounting the fan a good distance away from the exhaust point and using insulated ductwork insures extremely quiet operation.
 Grille assembly is mounted between joists |
 Attic configuration |
The insulated ductwork will continue from the exhaust side of the fan to the outside of the home. It is possible to exhaust the fan through a soffit, a wall, or a roof penetration. for this project - we will assume a soffit penetration.
Because the new fan will be so quiet - a timer switch is recommended to prevent the fan from being left on and to conserve energy (the fan will exhaust heated or cooled air from the bathroom). The switch will control the light and the fan in one "single gang" junction box. When the switch is in the up position, the fan and light will remain on. When the switch is set to the down position, the light will turn off but the fan will remain on for 15 minutes and then shut off automatically - enough time to ventilate the space but not waste energy.
 |
Fantech Premium Bath Fan Kit with Halogen Light - 100 CFM
MFG#: PB100H |
$187.50
|
|
4" X 25' Insulated Flex Duct
MFG#: A4F |
$18.95
|
|
Round Undereve / Soffit Bath Fan Vent
MFG#: 3840 |
$12.50
|
|
Electronic Toggle Type Fan Timer / Light Switch, White (97352-W)
MFG#: 97352-W |
$53.00
|
|
Fantech Premium Bath Fan Kit - 100 CFM
MFG#: PB100 |
$132.75
|
|
|
4" X 25' Insulated Flex Duct
MFG#: A4F |
$18.95
|
|
|
Round Undereve / Soffit Bath Fan Vent
MFG#: 3840 |
$12.50
|
|
Vacancy Sensor Fan Control Switch - White - CWP100-W
MFG#: CWP100-W |
$34.50
|