Dometic 400 Essential
A light, drop-in replacement for most RV toilets at a modest price.
Amazon $195.69$195.69
The Dometic 400 Essential is the better boat or RV toilet overall, rated 3.7 to 3.6. The Dometic 400 Essential leads on features and warranty. The Thetford Aqua-Magic VI Low Profile wins on value. The Thetford Aqua-Magic VI Low Profile costs $48 less ($147.69 vs $195.69).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Thetford Aqua-Magic VI Low Profile
The lowest-priced toilet here, for RV bathrooms with little floor space.
Amazon $147.69$147.69
Which should you buy?
- Choose the Dometic 400 Essential for features (soft-close seat, freshwater flush, water-saver flush, household-size bowl vs soft-close seat, freshwater flush, water-saver flush) and warranty (2-year warranty vs 1-year warranty).
- Choose the Thetford Aqua-Magic VI Low Profile for value ($147.69, against other toilets in its group vs $195.69, against other toilets in its group).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every RV gravity-flush boat or RV toilet; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dometic 400 Essential | Thetford Aqua-Magic VI Low Profile |
|---|---|---|
| Overall rating | 3.7/5 | 3.6/5 |
| Value 25% | 65 $195.69, against other toilets in its group | 89 $147.69, against other toilets in its group |
| Flush water 20% | 50 flush volume not published (neutral score used) | 50 flush volume not published (neutral score used) |
| Power draw 15% | 100 no electrical draw | 100 no electrical draw |
| Features 25% | 75 soft-close seat, freshwater flush, water-saver flush, household-size bowl | 55 soft-close seat, freshwater flush, water-saver flush |
| Warranty 15% | 25 2-year warranty | 0 1-year warranty |
Specifications
| Dometic 400 Essential | Thetford Aqua-Magic VI Low Profile | |
|---|---|---|
| Flushing | ||
| Type | Gravity | Gravity |
| Freshwater flush | Yes | Yes |
| Water-saver flush | Yes | Yes |
| Macerator | No | No |
| Control | Foot pedal | Foot pedal |
| Power | ||
| Draw at 12 V | None | None |
| Bowl and fit | ||
| Bowl size | Round, standard | Low profile |
| Bowl material | Plastic | - |
| Household size | Yes | - |
| Soft-close seat | Yes | Yes |
| Seat height | 18 in | - |
| Rough-in | 7.6 in | - |
| Build | ||
| Warranty | 2 years | 1 year |