Air Head Classic
#16 in Urine-divertingFull review
A configurable urine-diverting toilet for boats and vans, with crank side and tank shape options to fit a tight head and a five year warranty.
Air Head $1,095$1,095
The Air Head Classic is the better toilet overall, rated 3.3 to 3.1. The Air Head Classic leads on capacity. The Air Head Classic costs $84 less ($1,095 vs $1,179).
Thinktank Waterless Toilet
#20 in Urine-divertingFull review
A household style diverting toilet for cabins and tiny homes with a urine drain, the one to pick if guests need to stand to pee.
Amazon $1,179$1,179
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Air Head Classic for capacity (about 80 uses per solids bin, 2 gal urine bottle vs about 50 uses per solids bin, urine can drain).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every urine-diverting toilet; a clear win is highlighted. How we rank explains each one.
| Factor weight | Air Head Classic | Thinktank Waterless Toilet |
|---|---|---|
| Overall rating | 3.3/5 | 3.1/5 |
| Value 30% | 24 $1,095 | 17 $1,179 |
| Capacity 25% | 57 about 80 uses per solids bin, 2 gal urine bottle | 39 about 50 uses per solids bin, urine can drain |
| Power 15% | 50 power draw not published (neutral score used) | 50 power draw not published (neutral score used) |
| Certification 15% | 50 NSF/ANSI 41 certification not stated (neutral score used) | 50 NSF/ANSI 41 certification not stated (neutral score used) |
| Warranty 15% | 100 5-year warranty | 100 6-year warranty |
Specifications
| Air Head Classic | Thinktank Waterless Toilet | |
|---|---|---|
| Capacity | ||
| Type | Urine-diverting | Urine-diverting |
| Uses per solids bin | 80 uses | 50 uses |
| Urine bottle | 2 gal | - |
| Urine drain option | No | Yes |
| Agitator | Yes | No |
| Power and venting | ||
| Power | - | 12V/120V |
| Vent size | - | 3 in |
| Build | ||
| Seat height | - | 19 in |
| Dimensions | 18.76 x 19 x 19.75 in | 18 x 23.2 x 19 in |
| Weight | - | 30 lb |
| Material | - | Rotationally molded plastic |
| Warranty | 5 years | 6 years |