best vent locations

[Brewmaster-SKO]

Hello, I know there are most of you folks who hate people like me asking for advice and are told " Read the instructions" stupid, But, This answer isn't in the instructions, so here goes, BTW, Smart ass answers are not needed like the answers I've received from other issues I've posted !!! I'm installing an AIR HEAD Composter Toilet in my Skoolie Bathroom. I would like to know where the vent to it works the best. Between the side, roof, or the floor, I see good and bad on all of them, and many have used all locations, but I really want to keep the smell away. I value your honest thoughts
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[Kentucky Dreaming]

I've never dealt with a composting toilet, but I would think the same rules of thumb for a chimney or stovepipe would apply. Up out the roof above the highest point. But I'm just a simple uneducated hillbilly, and no questions are stoopid

 

[nikitis]

I would vent it out the side next to the toilet. Easiest access, if you shoot the smell upwards, it goes out everywhere in the camp site, if you go out the side, well its mostly on one side.

I'd probably use a computer fan with a switch by the toilet to suck it out.

 

[Brewmaster-SKO]

Thank You for your reply. I have considered that with the thoughts you have in mind, My only issue will be it will be under a canopy and might not escape very well
And it does have a fan in line running 24/7 which should make a big difference also Thanx

 

[desrtdog]

@nikitis - The composting toilets (AirHead and Nature’s Head) come with a small fan that draws air through the toilet and out the vent….I've seen where some mat add an additional one to boost the flow. As far as where to vent, I put mine through the floor next to the toilet… Through the roof is just one other hole that you need to worry about leaking, and through the side (for me) would have meant that I’d need to do some exterior body work due to the ribbing on the skin.

 

[nikitis]

@desrtdog yeah I just didn't suggest the floor because I don't know how that works as far as odors mixing up with all the grease under the bus etc. Does the oder stick to it over time? I'm sure I'm probably incorrect on this, but just my thinking. I've seen others do out the side so that's why I suggested it.

Odors from a toilet tend to float, and would get captured under the bus and rise, and if not sealed 100% could seep back into the bus. Maybe not but just where my thought on it is goin and why I didn't suggest the floor.

 

[Brewmaster-SKO]

@nikitis - The composting toilets (AirHead and Nature’s Head) come with a small fan that draws air through the toilet and out the vent….I've seen where some mat add an additional one to boost the flow. As far as where to vent, I put mine through the floor next to the toilet… Through the roof is just one other hole that you need to worry about leaking, and through the side (for me) would have meant that I’d need to do some exterior body work due to the ribbing on the skin.

And you have had no smell from it ?

 

[s2mikon]

So here goes. I put mine through the floor with a fan. Why? I don't want holes through the roof. I had a small Pelican* dry box, water/stink tight, 5x7x2 approx. and installed the muffin fan inside of it with a switch. The throne has a hose that goes to the box and the box has a short pipe that vents down to between the floor and the top of my storage bay box. This diffuses any odors, I have at times when parked close to other units opened the pelican box and installed a fresh dryer sheet each day. I use pine wood pellets for media because they are quite cheep and help with odor control. Between the pine pellets and dryer sheets it smells like I'm drying pine cones in the dryer! I don't know what I'll do if some one comes up and starts sniffing around at the pleasant odors. I guess I'll cross that s*** creek when I get to it. I should add that when I work under the bus I turn off the fan. *I think that Harbor Freight has them too.

 

[Rucker]

My bus has a filing drawer-like space for the composting toilet (rolls away when not in use). The compartment is vented with a small computer fan equipped with a variable speed controller. It vents directly into the waste pipe vent stack for graywater, which vents through the roof.

Yes, a roof penetration, but the readily-available RV Sewer Vent Roof Cap is completely watertight.

I wasn't sure I'd want the vent anywhere but on the roof for odors. No issues with leaks or odors so far.

The variable speed controller was added to the small computer fan because a full 12 volts made the fan spin too fast. I think I run it at about 4 volts, plenty to evacuate the space and minimize voltage draw.

 

[Ozbozz57]

On the roof is my suggestion. As far away from anyone's nose as possible. I used the 360 Siphon vent. There is only one vent on my bus, and it serves to vent the kitchen sink, shower, and both greywater tanks - plus the Airhead toilet. Only one hole in the roof. The piping is run in the closet. I made the hole in the roof in a place where the roof curve was nearly flat so it would seal well. No leaks at all. The pipe fits tight in the hole and the vent is stuck down with butyl tape.