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Gerhard's Kitchen Bath & Lighting Store
Showrooms
Gerhard's Kitchen Bath & Lighting Store
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Calculator

Bath Fan CFM Calculator

Find the minimum CFM rating your bathroom exhaust fan needs. This tool uses HVI Standard 915 and ASHRAE ventilation guidelines.

1
Dimensions
2
Room Type
3
Moisture
4
Operation

Step 1 of 4

Bathroom Dimensions

Measure the floor area of your bathroom. Ceiling height feeds the volume-based ACH calculation.

Select a Showroom

See All 17 Locations
  • Gerhard's Showroom

    Appleton Gerhard's

    2100 W. College Avenue

    Appleton, WI 54914

    (920) 749-8900

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 2:00 PM CSTSun: Closed

  • Kohler Store

    Birmingham Kohler Store

    724 N Old Woodward Ave.

    Birmingham, MI 48009

    (248) 205-4929

    Mon–Fri: 10:00 AM – 6:00 PM ESTSat: 10:00 AM – 6:00 PM ESTSun: Closed

  • Gerhard's Showroom

    Brainerd Gerhard's

    5291 Birchdale Road

    Brainerd, MN 56401

    (218) 454-1900

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: By Appointment OnlySun: Closed

  • Gerhard's Showroom

    Delafield Gerhard's

    2566 Sun Valley Drive

    Delafield, WI 53018

    (262) 252-5900

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 3:00 PM CSTSun: Closed

  • Gerhard's Showroom

    Dubuque Gerhard's

    2055 Holliday Drive

    Dubuque, IA 52002

    (563) 556-0900

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 3:00 PM CSTSun: Closed

  • Gerhard's Showroom

    Eau Claire Gerhard's

    596 Cameron Street

    Eau Claire, WI 54703

    (715) 552-2700

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 1:00 PM CSTSun: Closed

  • Kohler Store

    Edina Kohler Store

    7101 France Ave S Ste 109

    Edina, MN 55075

    (952) 922-2825

    Mon–Fri: 10:00 AM – 6:00 PM CSTSat: 10:00 AM – 6:00 PM CSTSun: Closed

  • Gerhard's Showroom

    Green Bay Gerhard's

    3014 Holmgren Way

    Green Bay, WI 54304

    (920) 983-2900

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: By Appointment OnlySun: Closed

  • Gerhard's Showroom

    La Crosse Gerhard's

    106 Cameron Avenue

    La Crosse, WI 54601

    (608) 519-5414

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 2:00 PM CSTSun: Closed

  • Gerhard's Showroom

    Madison Gerhard's

    6800 E Gisholt Drive

    Madison, WI 53713

    (608) 223-1100

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 3:00 PM CSTSun: Closed

  • Kohler Store

    Milwaukee Kohler Store

    2525 N Mayfair Rd

    Milwaukee, WI 53226

    (414) 909-8737

    Mon–Fri: 10:00 AM – 6:00 PM CSTSat: 10:00 AM – 6:00 PM CSTSun: Closed

  • Kohler Store

    Overland Park Kohler Store

    5025 W 119th Street

    Overland Park, KS 66209

    (913) 335-6110

    Mon–Fri: 10:00 AM – 6:00 PM CSTSat: 10:00 AM – 6:00 PM CSTSun: Closed

  • Gerhard's Showroom

    Rhinelander Gerhard's

    5852 Forest Loop Road

    Rhinelander, WI 54501

    (715) 420-1323

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: By Appointment OnlySun: Closed

  • Gerhard's Showroom

    Rochester Gerhard's

    3815 Highway 14 W.

    Rochester, MN 55901

    (507) 289-2300

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: ClosedSun: Closed

  • Gerhard's Showroom

    Sheboygan Gerhard's

    732 N. Wildwood Avenue

    Sheboygan, WI 53081

    (920) 694-3252

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 2:00 PM CSTSun: Closed

  • Gerhard's Showroom

    St Louis Park Gerhard's

    7003 W. Lake St. Suite100

    St Louis Park, MN 55426

    (952) 544-0458

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 3:00 PM CSTSun: Closed

  • Gerhard's Showroom

    Whitefish Bay Gerhard's

    402 E. Silver Spring Drive

    Whitefish Bay, WI 53217

    (414) 967-9156

    Mon–Fri: 9:00 AM – 5:00 PM CSTSat: 9:00 AM – 3:00 PM CSTSun: Closed