Bathroom and 70 ft. The real answer is how powerful the fan motor is.
Enter bathroom length ft.
Bathroom exhaust fan vent pipe length. Press calculate minimum suggested bath fan cfm. Using this chart you ll find that for a 640 cu. Or do i need to use a duct of other material.
Maximum length for bathroom extractor exhaust fan vent. Per m1507 2 recirculation of air. On 2019 10 02 by mod maximum bath exhaust vent fan duct length.
I m renovating my bathroom and plan to install a fan. Once you ve got all the information it s time to select an appropriately sized fan. Enter bathroom height step 4.
Exhaust air from bathrooms and toilet rooms shall not be recirculated within a residence or to another dwelling unit and shall be exhausted directly to the outdoors just remember the goal of a bathroom fan is to exhaust obnoxious gasses moisture resulting in a healthier safer living environment. It will go straight up through an insulated interior wall into the attic and then outside via roof vent installed by a roofer. Keep the run of vent pipe.
To improve venting and reduce air resistance in the vent pipe. Options for venting a bathroom exhaust fan include best to worst. Ask question asked 5 years 3 months ago.
Share improve this question follow asked apr 30 15 at 15 20. Behind a gable vent. The shower is on one side of the room and the bath is on the opposite wall so i plan to put the fan in the middle of the room.
Is it acceptable to use 4 pvc pipe as an exhaust duct in a small powder room. Through the roof or an exterior gable wall. The bathroom exhaust ventilation fan disperses air through an opening in the fan housing which is usually 3 inches in diameter and ideally faces in the direction of the ventilation system outlet.
Joe thank you so much for asking. Fantech recommends a minimum of eight feet of insulated flex duct between the exhaust inlet register or grille and the fan motor. In order to make the vent fan as quiet as possible mount the fan itself as far as possible from the intake register in the bathroom.
Determine the proper sized fan. The bath fan calculator is standard guide to help you find the minimum fan rating for your specific bathroom. What is the maximum amount of hose i can use to vent outside you shouldn t have any problem going 5 or 8 feet further to reach the centre of a room.
Brian lyttle brian lyttle. Of duct equivalent length you ll need a 110 cfm fan to achive the recommended 8 air changes per hour. Any idea what the make and model of the fan.
Assuming we use rigid and insulated pipe how far can we run a vent pipe. 187 1 1 silver badge 12 12 bronze badges. The company does not cite a maximum exhaust duct length.
To do this you can use a chart like this. Behind a soffit vent. When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.
Suggested cfm for the bathroom is based on cycling all the air in the bathroom 8 times per hour. Enter bathroom width ft.