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Sun-Mar FAQ


Welcome to the FAQ section for Sun-Mar Composting Toilets. Here, we provide answers to common questions about Sun-Mar, its products, and the benefits of composting toilets. Whether you're considering a composting toilet for your home, cabin, RV, or any off-grid living situation, we aim to address your queries and provide you with the information you need to make an informed decision. Explore the questions below to learn more about Sun-Mar and the advantages of composting toilets. If you have any additional questions, feel free to reach out to our knowledgeable team.

Q: Who is Sun-Mar?
A: Sun-Mar's founder, Hardy Sundberg, invented the world's first self-contained composting toilet in 1971, which eliminated the need for municipal waste infrastructures.

Q: How does Sun-Mar work?
A: Sun-Mar's composting toilets use a Bio-drum to optimize composting speeds, automatically draining excess liquid and generating heat through composting microbes.

Q: What are the benefits of Sun-Mar Toilet?
A: Lists the benefits of Sun-Mar composting toilets, including environmental friendliness, off-grid capability, nutrient-rich compost production, odor control, and low maintenance.

Q: Is Sun-Mar NSF certified?
A: Confirms that Sun-Mar composting toilets are certified by the National Sanitation Foundation (NSF) for residential use.

Q: Why choose a Sun-Mar brand?
A: Provides reasons to choose Sun-Mar, including their reputation, innovation, product range, customer support, and compliance with regulations.

Q: What is the warranty on the Sun-Mar brand?
A: States the warranty details for Sun-Mar composting toilets, including a 5-year replacement warranty on the fiberglass tank and a 3-year replacement warranty on all other parts.

If you have any other questions that were not answered about EcoJohn products, Please reach out to us at or call (833) 717-1234. We will be happy to answer any questions that you have for us.

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