Bath Exhaust Fans: DIY Size, Select, Install, Test, and Control
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- čas přidán 1. 07. 2024
- 'Home Diagnosis' TV hosts Grace and Corbett Lunsford give a crash course in picking, placing, testing, and controlling bath exhaust fans. Learn what Home Ventilating Institute certification, sone ratings, Energy Star stickers and duct installs are all about, and make your home healthier.
Learn more at: Broan.com/learn
Watch 'Home Diagnosis' episodes at: HomeDiagnosis.tv - Věda a technologie
I do building diagnostics and we just replaced exhaust fans in a 2018 home that weren’t pulling enough CFM. Replaced all of them with Broane and the homeowner loves the quieter sounds and I love that they are effectively pulling out the moisture!
Good work Brantley. Just made the world a better place, and your client will never go back.
Thank you for answering all of these questions in a single video! I keep coming back to this video, again and again.
AWESOME ✊🏽
So much info! Thanks for taking the time to educate us.
Glad you learned something from this, Stewart! Always nice to hear.
Extremely helpful! Thank you!
I ran 4 inch abs pipe from the exhaust fan. It's about 3' from an outside wall. It will remove all humidity in about 30 seconds. The smooth pipe makes it very easy to keep clean and naturally is more insulated than it's metallic cousin.
Hells yeah. Fantastic video. The best on the subject.
Thank you sire
Good quality, good video content.
Thanks as always for following, Vitaliy!
This is such a great video. I see so many fans installed far away from the shower/tub or in a completely separate toilet closet. And even in more expensive homes, only the cheapest, noisiest fans tend to be used. IMO at least a 110 CFM fan with a 6” duct diameter should be used with a shower.
The fan should also be run 15-30 minutes after bathing to remove residual steam.
Same. My master bathroom has only one exhaust fan in the toilet room. I keep wondering what the hell were the builders thinking? Would someone seriously leave the toilet door open during a shower?
Then again, the vanity mirrors barely get foggy, so it's not critical for me to install another one on top of the shower although I'm considering it.
@@aurvaroy6670 I see this on so many electrical plans, one fan in the toilet room and none in the bathroom or fans far from shower/tub. It's probably overkill, but I might do a 50 or 70 CFM fan in the toilet room and a 110-130 CFM in the main bath. You could do higher sones on the toilet room one if you wanted more privacy. Obviously builders aren't going to add that cost into the home so won't do it, but I think it would be worth doing it. Maybe I'm too OCD though.
This is the OCD channel on the science of homes, Cole. You are in good company.
What about when you have an ERV. Do bathroom fans disappear?
Dew point switch from home depot was the best purchase made. Set the percent and run time. I never think about turning on or off my fan
Controls are the future
Excellent vid. Thanks guys.
Do you have any suggestions on how to vent one when there is no attic space? Eg flat roof house? Thanks
You can go out through a wall, too, like this: www.broan-nutone.com/en-us/product/ventilationfans/ae50110dcl
Thank you very much guys. You are such a great couple. I m running into a problem here, i want to install an exhaust fan in the bathroom on the first floor, the joints between the first floor and second floor run perpendicular to let me run the duct to the outer wall. what should i do? Thank you for your help.
Thanks Antony! The other direction also leads to an exterior wall, no? That’s really your only option…
I've only heard the term "fart fan" used for recirculating fans and not exhaust ones. I saw that HVI's website recommends adding 50 CFM for each toilet, tub, and shower and 100 CFM for a jetted tub. I need an exhaust fan installed since opening the window doesn't feel like it helps humidity leave the bathroom while showering.
Silly geese
Corbett, very good video with lots of valuable info, people pay attention your not to poor that you can't pay attention.
Preach it, Dave
I like timer switches. I found my family wouldn't turn on the fan because they didn't want to hang around to turn it off. 5 minutes of fan time right after the shower always cleans out all the humidity.
Excellent. Can you give pointers to connect exhaust to a hrv or erv
Yes- don’t do it! If you’d like to use an ERV to exhaust from baths, skip the exh fan entirely.
Would like to know more techniques . How to wiring and how to measure line accurately on ceiling.
W, I wish we could help, but ours is more a science channel rather than a detailed how-to home improvement one.
S&P in line fans. They have been great. Does anyone use HRV for bathroom exhaust?
I do
Im a handyman,, an d i first looked at your video, and fell in love with your production and acting,,,, your funny words like fart, made me laugh, and the speed and choice of necessary words, was on point, and btw the pictures was very well done,,,,,,,,i approve very much i will subscribe and look for more tips,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
i do have a question though,????? i just installed a panasonic bathroom fan for a small bathroom and vented thru attic over to the gable vent on the side of house, bcus i dont want to go thru ceiling, or soffitt,,, and did not want to cut a hole thru house, so i went straight to vent and secured it very nice and the run is right at 20' with one 90 turn I used the flexable duct and it is as straight as i can get it,,, my question is, is this acceptable? we dont have to have insulation bcus we are in South Carolina and it doesnt get that cold?........ let me know,,,,, Peace guys,,,,,,
Great video. Thank you 😊
You’re welcome! Thx for watching and commenting Cajun friend.
Hi, is there a difference between bathroom and laundry room exhaust fans? I think I bought a bathroom when I need laundry. Thanks
Nope, same diff buddy. Interchangeable.
Thank you 🙏
Sense-on-rise gives me nothing on google can we get a link or brand name please? Also have you solved drafty fireplaces? I’m mid construction trying to build an tight home.
www.broan-nutone.com/en-us/search?q=sense+on+rise
and now good lucky finding someone locally who can install it correctly or fixing the wrong duct work without destroying the house
good info,how many cfm did you get?
This one’s rated for 80, installer achieved 50. Gotta have the specs in the contract!
My fan in the bathroom have dust packed around it. Can i use the vacuum to clean it.?
👍🏽
Lol short, simple, and sweet. I’m currently going about changing out the exhaust fan in my bathroom.
Any suggestions besides what kind of fan, but along the lines of safety guidelines to follow.
If it's over the shower, make sure it's UL listed and GFCI-connected (it's an electrical safety thing). Also, don't set yourself on fire ;D
Have you ever used the Panasonic fans? I've heard good things about them.
Sure, they have a long history with HVI too- they’ve not been interested to collaborate with us for a few years, not sure why.
I use one for my house and i just installed another one for a customer, they are very quiet and seem to stop the mold from growing so i like them, but they have that oval shape that is diffucult to install but not impossible ,
I have one at home,we just put them on but won't go off, what should l do ,how to take sensor off and turn it on and off from the outlet wall switch ?
What kind of sensor is it using now?
Do I need to keep the window and bathroom door closed when I am in the shower and I have the fan on? Or should the bathroom door be open? Wouldn't this make the steam go round the house instead of containing it in the bathroom to allow it to go through the fan?
You can easily test it both ways with an incense stick or smoking snuffed candle- if the smoke doesn’t go from the shower to the fan, then you have your answer. Most people tend to shower with the door closed in my experience.
@@HomePerformance thank you.. I've put tissue paper to the fan and it sticks to it. But I've seen conflicting information about whether I should shower with the window and door closed. Or whether I need the bathroom door or window open to help the fan work efficiently.. Something to do with the airflow?
Are you having problems? If it’s not broke, don’t fix it.
@@HomePerformance I’ve never had a fan in my sunroom before. I’ve just had one fitted so I don’t know what’s best, how to get the best performance. I would normally shower with the bathroom door and window closed but I read you should have the door or window open when showering while the fan is running.
Go ahead and close the door and window, you’ll find out soon if you need to adjust to make it work better. But ideally you should never have to open either to help the fan.
How about exhausting steamy air to my heat pump hot water heater air intake port,will that work?
I would not advise directing your steamy stinky bathroom air into another part of your home, no matter how much efficiency it gets you
Most of us already have exhaust fans in the water closet for the unpleasant visits. I plan to add positive pressure from an adjoining bedroom that remains hot all year. The Europeans exclusively exhaust that portion of their Hphw heaters to the outdoors.
Matthew 15:11-20 AMPC
It is not what goes into the mouth of a man that makes him unclean and defiled, but what comes out of the mouth; this makes a man unclean and defiles [him]. Then the disciples came and said to Him, Do You know that the Pharisees were displeased and offended and indignant when they heard this saying? He answered, Every plant which My heavenly Father has not planted will be torn up by the roots. [Isa. 60:21.] Let them alone and disregard them; they are blind guides and teachers. And if a blind man leads a blind man, both will fall into a ditch. But Peter said to Him, Explain this proverb (this maxim) to us. And He said, Are you also even yet dull and ignorant [without understanding and unable to put things together]? Do you not see and understand that whatever goes into the mouth passes into the abdomen and so passes on into the place where discharges are deposited? But whatever comes out of the mouth comes from the heart, and this is what makes a man unclean and defiles [him]. For out of the heart come evil thoughts (reasonings and disputings and designs) such as murder, adultery, sexual vice, theft, false witnessing, slander, and irreverent speech. These are what make a man unclean and defile [him]; but eating with unwashed hands does not make him unclean or defile [him]
Thx
👍
"Those "Fart Fans" are loud on purpose. It's called "Masking Noise" " (actual quote from builder)🤦♂️
Maybe people should eat better if they're having so much trouble with their bowel vocalizations
what if you have a bathroom on the 1st floor....how do you vent it?
Thru the floor cavity above, and out thru the exterior wall generally.
@@HomePerformance Can exhaust vent go out to or on the cantilever....
Sure
Are builders afraid of putting electrical things over the shower? Is it ok just outside the shower?
They need to be UL listed for wet locations, with a GFI on the circuit
How much does it cost
What exactly
Don't they negative pressure your home if you are sucking air outside all the time?
Unlikely to have a significant pressure effect in your home at large- for example, in our 3000 sq ft super airtight home (the tightest you could practically build), this 50 cfm fan would only induce a 5 Pa pressure.
@@HomePerformance If it's that low why even use one? Couldn't your home dehumidifier pull the moisture out of the air just as well? I am about to build a new house and I want to build it right.
Interesting idea. Pulling the moisture out where it’s created with a 3 CFM/Watt fan is WAY better than letting it disperse into the house and then wringing the water out of the air. Also, it’s required by code, so…
@@HomePerformance If bathroom fans are ok how do you terminate them to the outside? Is there a way to seal it when not in use so you don't have a open hole in your house? Same question for dryer vent and range hood. I am trying to find how tightly sealed homes handle those open holes in their envelope. What happens to the gas fireplace flue? Seems like even a tight home has many built in holes in it. Thanks for helping educate me on this stuff. I have a ton of questions.
Sounds like an hour consultation may be hugely helpful for you. Easy to book time if you wish:
buildingperformanceworkshop.com/video-consulting
Short answer: don’t have a fireplace. All others are equipped with backdraft dampers.
How does one prevent hot/conditioned air from escaping to the outdoors when the fan is off? In my bathroom, we have a hvac vent blowing air into the bathroom and this airflow lifts the shutter on the fan exhaust enough to leak air. Heating dollars blowing outside :-(
Shouldn’t happen if the air can follow an easy path back to the HVAC return. You may have a duct leakage problem resulting in pressurized spaces. Pressure testing recommended.
@@HomePerformance Makes sense but I don't have HVAC returns in any of my bathrooms (home constructed in 2008 in the Kansas City area). So with the bathroom doors closed, the HVAC vent is naturally going to pressurize the room and the exhaust vent becomes the easiest path. I also think that if I did have returns, wouldn't the moist bathroom air be sucked into the return ductwork? That can't be good!
Also, I'm not 100% sure that warm air is escaping from the exhaust vent but I have found that the bathroom is very warm (warmest room in the house as measured with a thermal camera) so I suspected the exhaust vent. Any other suspects?
@@HomePerformance Just a gentle reminder that I'm waiting to hear your thoughts on my post above. Thanks!
Just throwing some ideas at you:
1) What if you put a damper on the runout going to your bathroom? Seems like you're getting to much flow into your bathroom.
2) How big is the gap under your door? That's the primary way air is transferred between rooms with a closed door, as you know.
3) You could put a power damper in your exhaust line to only open the damper when the fan has power.
Some people still have exhaust fans from the 50s and 70s And 80s they are super loud
Yes
Who’s the best trade person to install a vent fan..? Handyman..? Electrician..? Cheers..! 🍻
HVAC would be my ideal, but anyone who understands and cares about airflow. That’s not often the HVAC tech, unfortunately.
@@HomePerformance Thank You
And on our next video... *starts unrolling 2nd toilet paper roll*
We owe my mom a whole carton of rolls by now
Fck i must be getting old because i was getting upset at all that toilet tissue she was going to waste......
We like to joke around. Bathrooms don’t have to be somber all the time.
I try to watch your shows because they do contain valuable info BUT you talk to much! You go on and on and on. I am building a house and really can't spend 15 minutes to get 7 or 8 minutes of factual info. No insult meant, but please get to the point
Um, thanks. Maybe try using the speed control- sounds like double speed would fix your problem, I doubt we’ll be paring back since we keep finding more to talk about the more we learn.
I was told that you need a p trap shape in the duct so that any moisture will get caught in the p instead of dripping back into the bathroom. When you turn the fan back on, the water is dried.
Don't do it! There should be no water in the duct period- if there is, and you have a p-trap shaped droop, water will keep collecting until the airflow is completely blocked. Then, someone goes up to fix it and a half gallon of water dumps into your bathroom through the fan housing. This actually happens.
Lady is very pretty
Yes
omg zoom out please. these face shots are uncomfortably close...
Scootch your chair back Jamie
@@HomePerformance Scooch the tripod back there bud. :)
@@HomePerformance
I don't like how you guys said fart so many times. I found it disturbing.
Farting is as farting does I guess
Such an over-acted, exaggerated expressions, and super awkward ad for crappy broan fans.
Broan makes a wide range of fans, mr. frowny face. If you want cheap, they have that, but if you want 4x better than Energy Star, they have that too. And they put their money where their mouth is on quality- unlike some people who spend all their time watching and trolling youtube for free.