Shop products from small business brands sold in Amazons store. The 'size' of a bathroom fan doesn't actually refer to the physical dimensions but rather to it's CFM rating. For example, if you have a bathroom that is 80-sf, then you want a bathroom fan that is at least 80-cfm. Call 1-800-345-3000 or email us to set your web login up for your existing account. I'm not a current Home Depot Pro customer, but I am ready to buy today. I have seen many house defects over the years and saved my clients tens of thousands of dollars. Price and other details may vary based on product size and color. I recently wrote a product review on thebest ultra quiet bathroom fans that have very low sone ratings. HDS IP Holding, LLC. All Rights Reserved. For larger bathrooms of 100-sf or more, we recommend that you add up the CFM based on the number of plumbing fixtures rather than calculating based on floor size. There is a little switch on the housing that allows you to choose which CFM you want. (9-Step Guide), How To Wire A Bathroom Fan And Light On Separate Switches? You would need a bathroom fan that is at least 160-cfm or two bathroom fans that equal 160-cfm. Bathroom Exhaust Fan Sizing Chart & Calculator, 6 Best Bathroom Exhaust Fans With Lights Combo (2022 Review), 4 Best Bathroom Exhaust Fans With Heater And Light (2022 Review), Top 7 Best Quiet Bathroom Exhaust Fans (2022 Review), Top 5 Best Bathroom Exhaust Fans (2022 Review), How To Clean Ceiling Fan In Bathroom? Backdrafting occurs when there are gas appliances in the home, and the powerful fan creates negative air pressure. This standard bathroom fan size calculation of 1-cfm per square foot is for regular sized bathrooms that are 100-SF or less. If you have a very tiny bathroom that is less than 50-sf (such as 40-sf), you want to keep a minimum of 50-CFM. A Static Favorites List is created by adding items to your list from Search and/or Browse results, product detail pages, and previous orders and invoices. The negative air pressure can pull back in noxious gases back into the home from the gas appliances (instead of going outside) such as hazardous carbon monoxide. In the exhaust fan size chart below, you will see a quick breakdown of each method, and you can keep reading for full details on each calculation: 1. There are also bathroom fans with variable speed motors that start off on a slow speed when you first turn on the fan, and if it detects high moisture, it will kick into a higher speed. New bath fans will tell you the vent pipe size (diameter) that needs to be used such as 3-inch, 4-inch, or 6-inch. And you can always go slightly more than the recommended minimum of 1-cfm per 1-sf. Add the Broan(R) 210 CFM High-Capacity Ventilation Fan to your bathroom to ventilate the air and help prevent mildew. The standard ceiling height for bathrooms is 8-feet, so if you measure your ceiling and it is 10-feet or 12-feet, you will need to factor in the increased vertical space. Please Log In to use this helpful feature. Home Inspector Secrets is an online resource for owners, buyers, and sellers to understand all aspects of home maintenance. Legend Force HARD COATED SAFETY GLASSES, BLACK FRAME, CLEAR LENS, Werner 6 ft. Fiberglass Podium Step Ladder 12 ft. Reach 300 lbs. You walk into the bathroom, and the fan is so weak it barely moves any air at all. The first and most common way to size a bathroom fan is to use 1-cfm per square foot of floor area. The best ducts for bathroom fans also tend to be pre-insulated which helps reduce noise and prevents condensation. If you have a completely enclosed shower area, the bathroom fan will also need to be GFCI connected. Home Bathroom Exhaust Fans Bathroom Exhaust Fan Sizing Chart & Calculator.

I'm here to help you maintain, inspect, and renovate your home! For each toilet, shower, or bathtub, simply assign 50-cfm to each fixture. This means that the bathroom's air volume should be totally replaced at least 8 times in 60 minutes. Warranty On the flip side, an overly powerful bathroom fan can be needlessly loud and expensive. If the bottom door gap isn't at least 5/8-inch, it will be difficult for the bathroom fan to properly do it's job because there isn't enough makeup air. Top subscription boxes right to your door, 1996-2022, Amazon.com, Inc. or its affiliates. And that's why I am your guide on the intricacies of home maintenance, saving money, and avoiding costly mistakes. This allows the primary bathroom exhaust fan an opportunity to do its job. There are a few different ways to calculate the CFM for your bathroom, but all methods try to aim for at least 8 air changes per hour. These fans have humidity sensors so they can automatically turn on or off as well. You can also get a bath fan that has a slightly higher CFM (by 10-20%) than the minimum without it being a problem. Static: CFM stands for cubic feet per minute, and it basically tells you how much air the bath fan can move in one minute. If you need assistance, please call Customer Service at 1-800-345-3000. Well, if you plan on buying a new bathroom fan, it is important to size it correctly. In addition to the duct size, the number of bends, overall length, and metal vs. foil type of duct can have an impact on CFM. Copyright Home Inspector Secrets 2022 For any questions regarding product features, installation, or specifications, please call our Technical Services Dept. I am a licensed home inspector in Virginia and have inspected thousands of homes. And if you absolutely dont want to install a secondary fan, its recommended to leave the door at least partially open throughout the day. 210 CFM, Whole home or Commercial Ventilation, 1.7 sones for quiet performance, enough sound to know your fan is on, Includes 8-way adjustable mounting brackets for easy ceiling-mount installation, Duct horizontally, vertically or in-line with separate adapter, AMCA licensed for air and sound performance, Requires 120-Volt 1.8 Amp circuit (sold separately). However, if you just increase the CFM 10-25% from the standard CFM recommendations, it should not be problem. Home Inspector Secrets is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

A somewhat higher CFM (like 10-20% higher) won't hurt anything, but an underpowered bath may not adequately remove the moisture needed to protect your bathroom. ft. Its steel housing provides durability and its white grille helps accent your bathroom for a clean, attractive look. We have detailed home guides, product reviews, inspection advice, and much more.

You can either buy one bathroom fan rated at 200-cfm or you can buy 2-3 fans that add up to 200-cfm. RLOZUI 8 inch Exhaust Fan, 735 CFM Wall Mounted Vent Fans, Ventilation Blower for Ceiling Bathroom Attic Window Basement Ventilation Fan, 110V 80W (White, 8 inch), Broan-NuTone L300 High Capacity Ventilator Fan, Commercial Exhaust Fan, 2.9 Sones, 120V, 308 CFM, White, iPower GLFANXINLINE8 8 Inch 750 CFM Inline Duct Ventilation Fan HVAC Exhaust Blower for Grow Tent, Grounded Power Cord, 8", Grey, Panasonic FV-30VQ3 WhisperCeiling Ventilation Fan, Quiet Air Flow, Long Lasting, Easy to Install, Code Compliant, Energy Star Certified, White, Panasonic FV-40VQ4 WhisperCeiling 380 CFM Ceiling Mounted Fan , White, Exhaust Fan 110 CFM 1.0 Sones 5.9" Duct White Square Quiet Powerful Ceiling or Wall-Mount Ventilation Fan for Bathroom/Corridor/Office/Laundry Room/Shop, Broan-NuTone AE110 Invent Flex Energy Star Qualified Single-Speed Ventilation Fan, 110 CFM 1.0 Sones, White, iPower 20.6 X 20.8 Inch Shutter Exhaust Fan Aluminum, High Speed 1190 RPM, 3368 CFM, 1-Pack, Silver, iPower 12 Inch Exhaust Fan Aluminum, High Speed 1300RPM, 1-Pack, Silver (HIFANXVENTIL12), Broan-Nutone L400 High Capacity Ventilator Fan, Commercial Exhaust Fan, 2.3 Sones, 434 CFM, Broan-NuTone 504 Ventilation Fan, 10-Inch 330 CFM 8.0 Sones, White, Panasonic FV-20VQ3 WhisperCeiling 190 CFM Ceiling Mounted Fan, iLIVING - ILG8EF20EX Explosion Proof Utility High Velocity Blower, Fume Extractor, Portable Exhaust and Ventilator Fan, Air Ventilation with 5830 CFM, 1720 RPM (20 Inch), Homewerks 7141-110 Bathroom Fan Integrated LED Light Ceiling Mount Exhaust Ventilation 2.0 Sones 110 CFM, White, VEVOR Utility Blower Fan, 12 Inches, 520W 2295 CFM High Velocity Ventilator w/ 32.8 ft/10 m Duct Hose, Portable Ventilation Fan, Fume Extractor for Exhausting & Ventilating at Home and Job Site, Iliving - 36" Wall Mounted Shutter Exhaust Fan - Automatic Shutter - Single Speed - Vent Fan For Home Attic, Shed, or Garage Ventilation, 6128 CFM, 9000 SQF Coverage Area, Silver (ILG8SF36S), GRELWT 24" Wall Mounted Exhaust Fan - Ventilation Fans - Automatic Shutter - Vent Fan For Home Attic, Shed, or Garage Ventilation, 4400 CFM, 6200 SQF Coverage Area, iPower 12 Inch Variable Shutter Exhaust Fan Aluminum with Speed Controller and Power Cord Kit, 1620RPM, 1600 CFM, 2-Pack, Silver, BV Bathroom Fan Ultra-Quiet 200 CFM, 2.0 Sones Bathroom Ventilation & Exhaust Fan, Bathroom Ceiling Fan. Dynamic: If you have a jetted tub, assign 100-cfm. So if you have a bathroom with one toilet, one shower, and one jacuzzi tubthe minimum CFM required would be 200-cfm. Since the enclosed area is usually such a small area, going with a small 50-cfm bathroom fan is standard. My guide on bathroom fan sones details how it works. Higher quality bathroom fans tend to also have premium motors (variable speed and ECM) that can significantly reduce noise. You can read my review on the best bathroom fans with humidity sensors here. Please call us: 2010 - 2022. Here are a few frequently asked questions that are related to sizing a bathroom fan: The short answer is yes. A higher CFM bath fan will likely have a higher sone rating, but not all. A Dynamic Favorites List is automatically created from your purchase history based on the timeframe, ship-to name, and product categories you want included. It includes 8-way adjustable mounting brackets for easy ceiling-mount installation. Specification. Can't find what you're looking for? It's also really important to make sure that the bathroom door has a satisfactory gap on the bottom. In this guide on bath fan sizing, I will go over: There are 4 main ways to size a bath fan. Get the professional answers you deserve. Multiply floor area by the ceiling height.