Are composting toilets, like Air Head, legal?

Yes, both Air Head Classic and Tejo are classified as a MSD type III.

What happens to the smells in the solid tank?

Once solid matter enters the main tank, anaerobic bacteria die off within a few days due to airflow. Aerobic bacteria then thrive, breaking down waste without foul odors. Solids are mixed under the composting medium and agitated to encourage aerobic activity, producing only a mild earthy scent. The included external fan and vent carry away any residual odor.

Why is urine and feces separation important in composting toilets?

Separating urine and feces reduces moisture in solid waste, speeds up composting, and minimizes odors. It also improves nutrient balance and reduces how often the solids tank needs to be emptied.

How does it make compost?

Solid waste is combined with a carbon-rich material, like coco peat bricks, which support aerobic bacteria growth. These microbes naturally break down waste into compost, a nutrient-rich soil additive, in an odor-free process.

Is the Air Head suitable for Marine liveaboards?

Yes. Liveaboards prefer Air Head because it reduces pump-out needs and meets wastewater regulations. A cruising couple usually empties the solids tank once a month. With fewer moving parts than standard heads, it’s easier to maintain and more reliable long-term.

Is the Air Head suitable for RVs?

Yes, it’s an excellent option for both full-time RVers and weekenders. Perfect for boondocking, it removes the need for dump stations or harsh chemicals, letting you travel freely without waste-related restrictions.

How often should an Air Head be emptied?

The solids tank averages about 80 uses. For two people using it daily, that’s roughly one month before emptying. Weekend use can stretch it through a season. Liquids tanks vary: the 1-gallon version needs emptying every 1–2 days, while the 2-gallon lasts 2–4 days.

Where do you empty the solids?

At sea, solids can be discharged offshore outside U.S. legal limits. On land, solids can go into a compost bin for further decomposition or be bagged and placed in regular trash. Never dump waste in inland lakes or restricted coastal waters.

Can the fan be turned off for periods?

It’s best to keep the fan running continuously to aid composting and control odors. Turning it off for long periods slows decomposition, increases odor risk, and may allow insects to enter. Short interruptions are acceptable if necessary.

Can the Air Head be ordered in any orientation?

Yes. Each Air Head unit can be customized for your installation needs, including orientation options to best fit your available space.

How much space is needed for a proper installation of an Air Head?

Air Head’s rounded design allows installation in compact spaces. Exact dimensions are available on the sizing guide page to ensure compatibility with your setup.

What specific maintenance routines are recommended for long-term use?

Recommended routines include cleaning the bowl with vinegar and salt, inspecting the fan and vent, agitating the compost regularly, checking seals, and ensuring moisture balance. These steps keep the toilet efficient and odor-free.

How does temperature affect the composting process in the Air Head Toilet?

The ideal temperature range is 55°F–100°F (13°C–38°C). Composting slows below this range as microbial activity decreases. Excessive heat can harm bacteria and dry out the medium, disrupting composting efficiency.

What is the recommended procedure for winterizing the Air Head in an RV or boat?

To winterize: empty both tanks, clean thoroughly, add non-toxic antifreeze to the urine bottle if used, keep ventilation open, insulate vents or pipes, monitor moisture, and use a small heater in extreme cold.

Can I install the Air Head myself?

Yes. The Air Head is designed for straightforward DIY installation, typically completed in a few hours using the provided guide.

How much power does the 12v fan use?

The 12v fan uses about 0.06 amps per hour, equaling roughly 1.44 amp-hours over a full 24-hour day, making it very energy-efficient for continuous operation.

How much does an Air Head Composting Toilet cost?

Prices vary depending on model and configuration, but typically range between $1,000 and $1,200. Accessories or add-ons may increase the total cost.

How long does an Air Head Composting Toilet last?

With proper care and maintenance, an Air Head can last more than 15 years. Replacement parts are available if needed.

What cleaning products are safe to use with Air Head?

Mild, natural cleaners like vinegar and salt are safe. Avoid harsh chemicals such as bleach or ammonia, as they can damage the toilet and disrupt composting.

Can I use regular toilet paper with Air Head?

Yes, but thinner or quick-dissolving toilet paper is recommended. Air Head also offers paper carriers to keep toilet paper tidy in compact spaces.

Does the Air Head Composting Toilet require electricity?

The Air Head uses a small 12v fan for ventilation, which consumes about 1.44 amp-hours per day. It can also run on solar power or a household 110v transformer.

How heavy is an Air Head Composting Toilet?

The full unit weighs approximately 25–30 pounds, making it easy to install in boats, RVs, cabins, and tiny homes.

The True Cost of Owning a Composting Toilet on a Boat

When boaters start looking into marine sanitation options, the first question that often comes up is the cost of owning a composting toilet. At first glance, a traditional holding tank system may look cheaper. But when you factor in installation, ongoing pump-outs, maintenance, and hidden expenses, the numbers tell a very different story. Over five years, a composting toilet — especially the Air Head Composting Toilet — isn’t just more convenient. It’s also the smarter financial choice.

Let’s break it down step by step.

Upfront Costs: Composting Toilet vs Holding Tank

At purchase, the price tags look very different:

Composting Toilet (Air Head): $1,000–$1,200 depending on configuration. Installation is straightforward and usually DIY-friendly.
Holding Tank System: $500–$800 for the tank itself. But you also need hoses, a Y-valve, a through-hull fitting, a macerator pump, and professional installation. The full setup typically runs $1,500–$2,500.

👉 Takeaway: The upfront cost difference is often smaller than people assume. Once you factor in installation, composting toilets are actually competitive — sometimes cheaper.

The cost of owning a composting toilet - Air Head Toilet

Maintenance & Pump-Out Fees Over Time

Here’s where the real cost gap appears.

Holding Tank:

Pump-outs typically cost $10–$25 per visit.
Liveaboards or frequent cruisers might need a pump-out every 1–2 weeks.
That adds up to $300–$600 per year — or $1,500–$3,000 over five years.

Composting Toilet (Air Head):

Solids bin needs to be emptied every 3–4 weeks (for two people full-time). No cost involved.
Liquids container emptied every 2–3 days. Again, no cost.
Occasional peat moss or coco coir refill: $50–$75 per year.
With proper care, an Air Head can last 10+ years with minimal replacement parts.

👉 Takeaway: Over five years, composting toilets cost less than $400 to maintain. Holding tanks can cost 10× that just in pump-outs. This explains the cost of owning a composting toilet is cheaper in the long run.
For a step-by-step guide, see our blog: How to Empty a Composting Toilet on a Boat.

Long-Term Hidden Costs of Holding Tanks

Beyond pump-outs, holding tanks come with hidden headaches and expenses:

Clogged hoses and valves: Replacement parts and labor can run $200–$500.
Macerator pump failures: Typically need replacement every 3–5 years (~$300–$400).
Odor management: Chemicals and deodorizers cost $50–$100 annually.
Resale impact: Boats with aging holding tanks often need replacements — a cost passed on to new owners.

Composting toilets eliminate most of these issues. No hoses, no clogs, no smelly chemicals. Just simple upkeep. Want to learn more about odor control? Read our blog: Do Composting Toilets Smell? Myths vs Reality.

Why Air Head Is the Smarter Investment for Cruisers

When you compare holding tank vs composting toilet cost, Air Head comes out ahead not just financially, but also in quality of life:

More Freedom: No need to plan cruising routes around pump-out stations.
Eco-Friendly: No black water discharge, no chemicals.
Odor-Free: Smart design separates liquids and solids to prevent smells.
Compact & Flexible: Perfect for small boats, cabins, and tiny homes.
Durability: Air Head composting toilets are built to last over a decade with basic care.

Still weighing different options? Check out our comparison: Composting Toilet vs. Cassette Toilet.

For liveaboards and long-distance cruisers, the convenience factor is just as valuable as the savings.

5-Year Cost Comparison Table

Expense Category	Holding Tank System	Composting Toilet (Air Head)
Upfront + Installation	$1,500–$2,500	$1,000–$1,200
Pump-Out Fees (5 years)	$1,500–$3,000	$0
Maintenance & Parts	$500–$1,000	$250–$375
Chemicals & Odor Control	$250–$500	$0
5-Year Total	$3,750–$7,000	$1,250–$1,575

👉 Over five years, a holding tank can cost up to 4× more than an Air Head Composting Toilet.

The Cost of Owning a Composting Toilet Can Help You Save for Years

Marine sanitation costs are one of those hidden realities of boat ownership. While holding tanks might seem cheaper upfront, they drain both your wallet and your freedom over time. A composting toilet like the Air Head offers massive savings, low maintenance, and the independence that boaters crave.

💡 Bottom line: Choosing an Air Head isn’t just an upgrade for your boat — it’s an investment in hassle-free, odor-free cruising for years to come. Most owners use their Air Head for over a decade, making it one of the most reliable sanitation solutions available today.