Frequently asked questions

RV Vent Caps FAQs

Answers to common questions about 360 Siphon RV roof vent caps and holding tank odors. These are legacy 360 Siphon resources kept available for existing owners and installers.

Related resources

360 Siphon support and legacy resources
RV applications
RV brands built with the 360 Siphon

Still have questions?

Our team can help with product questions, installation guidance, and support for existing installations.

Can I install the 360 Siphon® myself?

Does the 360 Siphon® work when my RV is stationary?

Do you have a video that demonstrates how the 360 Products work?

Why do I smell holding tank odors in my RV?

Does cleaning the tank more regularly or adding more chemicals help?

Why do we get odors sometimes when parked and not at others?

Why when we are on the highway, with a cab window open, we can smell odors?

Why does flushing while traveling smell so bad?

If I put water in the bottom of the toilet bowl, will that prevent odors when we are on the road?

I don't know which tank smells worse. The gray water tank or the black?

Why, after traveling, does the RV smell bad?

Why does the RV smell bad after draining the tank?

Does a vent cap have to rotate to work properly for all wind directions?

How does the 360 Siphon® eliminate smells?

How does the 360 Siphon® work?

What are the differences between the Generation 1 and Generation 2 models of the 360 Siphon®?

Will it work when stationary?

What if there is no wind?

Will the Stack Cap work on my house?

Will the Stack Cap work on a composting toilet?

Related resources

Still have questions?