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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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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2 months, 1 week ago

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Bob
California
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Answer:
Thank you for the question on the model XB80 exhaust fan. Unfortunately, this unit cannot be installed in a wall. It can be installed in a slanted ceiling up to a 45 degree angle, but not in a wall. For additional information and assistance on this product, please contact our Technical Service Department at 800-637-1453.
2 months ago

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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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3 months, 4 weeks ago

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Karen
Oregon, USA
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Answer:
Sound Sones are 0.3 for 4" ducting for the XB80 for 75 sq. foot bathroom...
3 months, 4 weeks ago

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