I noticed that the outside radon vent hood--against the foundation wall--used to blow air out and I would see the vent flaps open and could feel the air. The vent no longer is blowing at all. See pics.
(See pics) So I took the boot off that connects the motor output to the PVC pipe that vents outside and there is nothing blowing out of the motor. Also there appears to be grit or something in there.
The manometer below the motor input seems ok, and the radon company that installed the system years ago checked and said everything is fine.
But this seems fishy to me. The motor is not blowing out, and it used to. So what do you guys think? Thanks! No air is coming out of here.
Well, they were shown it's not blowing and they said it's fine. I've not concluded anything because I don't fully understand these systems. Lacking that knowledge I've come here awaiting another opinion.
That fan is the crux of the system - it pulls air out of the space beneath your slab so higher pressure house air moves into the space instead of that air moving into your house and bringing the radon with it.
You're system is working fine. The tech is correct.
Those fans typically don't move enough air to feel.
Your system has a manometer on it.
When the liquid in the tube is even on both sides.... there is no air movement or suction within the system. Your manometer is showing suction as the right side is higher than the left indicating a suction from the floor.
[color=#222222]Sorry this might not be the right section for this but I am trying to understand why my guest bathroom can fluctuate so much in humidity, even in the evening. I recently added a small dehumidifier which seems to help, and def collecting some water (not a lot though). I have an external humidity sensor and it will range from 45% to 55%. When it hits over 50% it is noticable as you walk into the bathroom that the air feels much warmer. I will add I live in south FL, and its summer, so definitely hot outside.[/color]
[color=#222222]At first I was thinking it was the cabana door I have however I used a smoke machine and dont see any leaks. I checked the AC vent in the room and appears to have cold air coming out. Only other thing I can think of is the exhaust vent that goes to my roof. Perhaps better to post on an area regarding bathrooms but I wonder if when the fan isnt running if it just allows all the hot humid air to come right back into the vent? I dont see a flap/check valve type system (does this even exist for exhaust vents on the roof?) so maybe thats worth looking into. [/color]
[color=#222222]FWIW I dont recall it being this humid in there but until a couple weeks ago I never really thought about it, or checked the humidity % so hard to say if its been this way for the last 10years Ive lived and I only now took more of a notice. Anyhow, any feedback is appreciated![/color]
I recently have been attempting to replace my downstairs (basement) bathroom fan. What I thought would be a relatively easy fix has now resulted in me discovering that the old fan was vented to nowhere (just the space in the ceiling between the joists). There is some old 3" metal ducting in there, but it's not connected to anything. It is currently being run through one of the joists (a 3" hold in the joist, see the attached picture). I obviously want to vent this fan to the outside of the house, but is it wise to make a 3-4" hole in the exterior-adjacent joist to do this? I really don't have a lot of other options for moving the hole up or down. Would running this through the exterior joist cause any structural integrity? Is it better to try to find 3" ducting to
reduce the hole size? Or should I just try to come up with some other completely different solution.
[img]https://cimg0.ibsrv.net/gimg/www.doityourselft.com-vbulletin/551x696/bathroom_fan_b1f9919b707a79d785d76858ad99eae11ca88b30.jpg[/img]
09-03-22, 08:15 PM
