When it comes to tiny house toilets, there are many options on the market, but not every tiny house toilet is created equal.
Knowing your needs, expectations, and willingness to maintain an alternative toilet will help you choose a toilet that fits your lifestyle and adds to the enjoyment of your new home.
So is there a BEST tiny house composting toilet?... Nope, but here are 6 of my favorites.
For the true minimalist, a simple 5 gallon bucket with a toilet seat is a great option. My composting adventures began with one of these and it's not as bad as you might think.
Adding an enclosure around this style of compost toilet with ventilation to the outside will make your experience much much better.
If you are starting out with a low budget, this might be the best composting toilet for you. From here on, we dive into commercially available options.
The EcoJohn Basic is a step ahead of the Lovable Loo in a few ways. It looks more like a modern toilet, so your visitors won’t be quite so shy about using it. And more importantly, it separates the liquid waste from the solids.
Separating the liquids from the solids helps cut down on odor as well as increasing the capacity of the toilet. This separation also helps the waste break down and compost more quickly once removed from the unit.
The EcoJohn Basic also has a 12vDC (120vAC Optional) fan that runs to help exhaust the odors outside. This ensures no smell stays in the home. It also has a heating plate in the bottom of the toilet to help dry out the solid waste.
The Laveo Dry Flush takes things to a whole new level for tiny home users. This toilet is truly portable and self-contained. The basic concept is like that of a Diaper Genie, except instead of putting diapers in it, you take a poo in it.
The toilet has a double lined bag inside. After you use the toilet, you hit the flush button and the bag is sealed to prevent odor or leakage. Once sealed, the next part of the bag is ready for using.
The Dry Flush runs on 12vDC power supplied by an internal battery but can be adapted to 120vAC power if installed permanently. Each charge of the battery lasts months of full time use.
When your Dry Flush is full, you simply lift the top, close up the lining bag and dispose of in a dumpster. Each refill cartridge is good for about 15-17 flushes.
The Nature’s Head dry composting toilet is the next logical step up, and is the first toilet in this list that is truly a composting toilet. In the previous toilets mentioned, the composting process takes place after the waste is removed from the toilet, no inside the toilet itself.
The Natures Head, is a self-contained, liquid separating, composting toilet all put together in a nice looking package.
There is no need to run plumbing for getting rid of the liquid waste with the Natures Head. A storage bottle for liquids is part of the toilet itself, and is easily emptied when full without spilling or getting messy.
You will however still need to run one exhaust hose to the outside of your home. The Natures Head uses a small 12vDC fan to pull odors from the compost bin and vent them outside.
That being said, since this is a liquid separating compost toilet, there really isn’t much odor to deal with in the first place.
Another really cool feature Nature’s Head is equipped with, is the flapper on the inside of the bowl. When not in use, you leave the flap closed and there is no direct view into the poo pile. Your guests will love you for this feature!
Probably my favorite thing about this toilet over the others mentioned so far, is that with full time usage for 2 people, you might only need to empty this bad boy about every other month or even longer.
On a side note, this unit is a great replacement for marine heads and rv toilets.
Sun-Mar’s Compact composting toilet is another great option. Similar to the Nature’s Head in the fact that you will need to install a vent pipe and have electricity available, but it sets itself apart in the way it handles the waste.
The Sun-Mar Compact is designed to separate the liquids and solids AFTER they go into the toilet instead of AS they go in. Using a unique bio-drum system, solids and liquids are separated and the liquid waste is then evaporated away through the vent pipe. This means you no longer have to empty a urine bottle!
Waste is emptied via a finishing drawer at the bottom of the toilet. For a family of two using the toilet full time, you may get as much as 4-6 months between clean-outs.
It is recommended that you run an overflow drain to prevent overflow of liquid waste if the evaporation process does not keep up during peak usage like holidays.
The Santerra Green X Series is another player putting their hat in the game for self-contained composting toilets.
It operates in a very similar way to the Sun-Mar Compact with a few exceptions. The X Series has duel fans for better aeration and odor removal. It comes with a 4” wind turbine to dissipate toilet odor when leaving the home and to prevent rain or snow from coming down the vent stack. And it is available in many colors!
Another great feature of the X Series is the low profile of the toilet. There is no step up required and is very close to a standard toilet height.