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Composting Marine Toilet
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The benefits of composting toilets over the typical marine waste treatment system are substantial. Once mariners realize the efficiency of composting toilets over conventional marine heads, composting toilets will become the norm and waste water systems with holding tanks will become outdated.

  • Water Use Reduction
  • No thru-hulls or hoses(except vent hose)
  • No Y-valves to remember to lock
  • No need to have pump out
  • Odor Problems Reduced
  • End Product Recycled
  • Reduced Marine Pollution
  • Less Environmental Impact
  • Less Service & Maintenance (no pumps to work on)
  • Require less space (no holding tank for pump out)











"...it is simplicity itself, having few moving parts and only a 45 milliamp muffin fan as current draw, it uses no water, thus has no seacocks or hoses." Link

"We've used it since 2003 and we can say, "Yes it works."  It doesn't stink.  (If it does stink, then it isn't composting correctly.)  It is small and it gave us a ton of storage space back." Link

"Overall I'm very satisfied with the decision to go with a composting toilet in general and the Airhead in particular.  There really haven't been any serious gotcha's." Link

"I put an Air-head on our Hunter 37 cutter about a year ago. We are not full-time cruisers (yet), so the head gets only occasional use. After a year of occasionalweekend use I can make the following observations. 1) the installation was much easier and much cheaper than replacing our 20 y.o. Wilcox-Crittendon would have been. 2) We haven't emptied the compost bin yet, so I can't comment. The stated capacity is 80 "deposits", so we have a way to go. 3) The vent fan draws 100 milliamps, so our 50 watt solar panel keeps up with the fan running constantly. 4) There is no smell. 5) There is no pump-out or jammed macerator pump. 6) the only downside so far is if you have several women crew, all drinking beer, the small pee-tank will fill rather quickly." (link)

"I know that the post is over a year old, but we have had a Nature's Head Composting Toilet for over a year and are quite pleased with it. Every few days when near shore we have to take the liquid tank (2-1/2 gallon) ashore to empty it. It is easily emptied into a toilet. We primed the toilet with peat initially and added some on occassion with wonderful results. After about 9-10 months we picked a time when we had been away from the boat for a week or two and opened the toilet to empty the contents; It was about 2/3rds full and contained rich black dirt. We haven't had to empty it again as of yet. There has been no odor at all! Ours requires no water and has a passive vent that works well on the hook or mooring. We run a fan on it when aboard and power is abundant. When offshore eptying the liquids is done overboard obviously, and the solids do not need to be dealt with for most of the year. We keep a spray bottle of water to use on stubborn particles that occassionally refuse to flush below and that keeps all fresh and clean. The small amount of fluid that this adds to the solid tank evaporates quickly. The holding part of the toilet is sized to be emptied into a 30 gallon trashbag. We love ours and are purchasing another for our new boat! We haven't paid for a pump-out in over a year, and no seals have went bad, no pipes needed unclogged, and there is no pumping involved! When the old through-hulls were replaced we used them for the watermaker." (link)

David & Brenda


Air Head Toilets


Nature's Head


Let's Go Green


SunMar