Sun-Mar GTG
Sun-Mar’s low cost urine-diverting toilet for cabins, boats and RVs, with a normal seat height and a tiny fan draw.
Amazon $633$633
The Sun-Mar GTG is the better toilet overall, rated 3.8 to 3.3. The Sun-Mar GTG leads on warranty. The Sun-Mar GTG costs $17 less ($633 vs $650).
Compo Closet Cuddy Lite
#14 in Urine-divertingFull review
A full size, power free diverting toilet with a full light for campervans and boats, at a high price for a bag and bin design.
Amazon $650$650
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 Sun-Mar GTG for warranty (3-year warranty vs 2-year warranty).
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 | Sun-Mar GTG | Compo Closet Cuddy Lite |
|---|---|---|
| Overall rating | 3.8/5 | 3.3/5 |
| Value 30% | 77 $633 | 75 $650 |
| Capacity 25% | 50 capacity not published (neutral score used) | 15 about 8 uses per solids bin |
| Power 15% | 100 0.6 W fan | 100 needs no power |
| Certification 15% | 50 NSF/ANSI 41 certification not stated (neutral score used) | 50 NSF/ANSI 41 certification not stated (neutral score used) |
| Warranty 15% | 50 3-year warranty | 25 2-year warranty |
Specifications
| Sun-Mar GTG | Compo Closet Cuddy Lite | |
|---|---|---|
| Capacity | ||
| Type | Urine-diverting | Urine-diverting |
| Uses per solids bin | - | 8 uses |
| Urine drain option | No | - |
| Agitator | - | No |
| Power and venting | ||
| Power | 12V | None needed |
| Fan | 0.6 W | - |
| Build | ||
| Seat height | 18 in | - |
| Dimensions | 15.75 x 24 x 19.8 in | 15.2 x 17 x 16.3 in |
| Weight | 33 lb | 27.1 lb |
| Warranty | 3 years | 2 years |