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How To

How to Vent Two Bathroom Fans With One Roof Vent

Contributor
By Michael Straessle
eHow Contributing Writer
(1 Ratings)
Special Bathroom In-Line Fan
Special Bathroom In-Line Fan
http://www.rd.com/images/tfhimport/2006/200609_BathVent_001_sz2.jpg

Venting bathroom exhaust is crucial in controlling the condition of the air in the house. Proper installation is a key factor in gaining the maximum benefit from these products. After they are installed in all bathroom ceilings, they can all be vented through the same roof vent. The only caution is to be certain the roof vent is designed specifically for venting more than one room. This means it will have its own fan.

From Quick Guide: Air Vents Basics
Difficulty: Moderate
Instructions

Things You'll Need:

  • Bathroom roof vent
  • Duct work
  • “Y” connector
  • Duct tape
  • Bathroom exhaust boots
  1. Step 1

    Locate in the attic where the exhaust boots protrude the ceiling. Be certain that the boots are unobstructed.

  2. Step 2

    Connect duct work to each boot. Next, run it in the direction of the roof vent.

  3. Step 3

    Connect the “Y” connector to the roof vent. Connect the duct to the “Y” connector. Tape all connections.

Tips & Warnings
  • Always wear safety glasses.
  • Wear protective clothing in the attic. Fiberglass insulation is a skin irritant.
  • Be certain exhaust duct connection are firmly in place before taping them.
  • Do not work around fiberglass without a breathing apparatus.

Comments  

unguigui said

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on 1/2/2010 just left a house that had two into one, but the fan motor was the standard bathlight/fan combo in each bathroom and the roof exit hood has a flap damper to prevent infiltration backflow.. Cold air from coming back in. What happened when one fan was on the air would go to the other bathroom ... the path of least resistance hahah fart transfer eww. but seriously great solution.

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