I have an 80 CFM fan with 4" ducting. I noticed the soffit vent I chose is only 3.5" at the opening. Will this significantly degrade performance of the fan?
20 hours ago

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Jim
Menominee, MI, USA
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2 months, 1 week ago

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Owen
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Answer:
Thank you for your question on the model XB110 exhaust fan. I’m sorry, but this fan is not designed to be used with a speed control.
2 months, 1 week ago

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Answer:
Use the ZB series (ZB80 and ZB110) for rheostat controlled fans.
23 hours ago

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My builder installed an S80U-A fan in an upstairs bathroom, putting the switch in the basement. Told us that, in general, we should keep the switch on, because the fan pushing air out of the house 24x7 would induce a certain amount of fresh air inflow from the outside. That old fan has officially spun its last, and I'm looking to replace it. This XB80 fan looks like a good candidate, but I want to make sure I'm not going to kill the motor by running it 24x7.
3 weeks, 5 days ago

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Windham Breaker
Saint Paul, M
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Answer:
If you are looking for continuous ventilation, we would suggest looking at the Ultra Series model number ZB80, instead of the XB80. The ZB80 will give you a low 30 cfm for continuous use. You can then increase the cfm when needed up to 80 cfm’s. You can view this model on the Ultra website at http://www.broanultra.com/. Please contact customer service if you have more questions at 1-800-558-1711.
3 weeks, 4 days ago

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3 months, 3 weeks ago

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VR
Hicksville, NY, USA
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Answer:
XB110 is for easy installation in either new construction or retrofit. You can download the install guide and page seven shows what is necessary to do to install in current ceiling. There is a Video you can watch on our web site by clicking on the Ultra Series on our home page.
3 months, 2 weeks ago

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3 months, 3 weeks ago

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Dave
Davie, FL, USA
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Answer:
For optimum performance 6" duct is recommended on 110 CFM models and 6" or 4" duct for 80 and 50 CFM (these models have a 6" to 4" reducer included in the carton if needed).
3 months, 1 week ago

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