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 rates 3.7 among RV gravity-flush boat or RV toilets; the Johnson Pump AquaT Manual Compact rates 3.1 among manual marine ones. The Johnson Pump AquaT Manual Compact costs $36.69 less ($159 vs $195.69).
Prices were last checked November 11, 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.
Johnson Pump AquaT Manual Compact
#2 in Manual marineFull review
A budget porcelain hand-pump head that publishes its water use. A sound pick for a small boat with a holding tank.
Amazon $159$159
Scores side by side
These two sit in different type classes (RV gravity-flush and manual marine), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Dometic 400 Essential | Johnson Pump AquaT Manual Compact |
|---|---|---|
| Overall rating | 3.7/5 | 3.1/5 |
| Value 25% | 65 $195.69, against other toilets in its group | 80 $159, against other toilets in its group |
| Flush water 20% | 50 flush volume not published (neutral score used) | 26 0.7 gal (2.5 L) per flush |
| 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 | 25 ceramic or porcelain bowl |
| Warranty 15% | 25 2-year warranty | 0 warranty not published, scored as none |
Specifications
| Dometic 400 Essential | Johnson Pump AquaT Manual Compact | |
|---|---|---|
| Flushing | ||
| Type | Gravity | Manual |
| Flush water | - | Raw or fresh |
| Water per flush | - | 0.7 gal |
| Freshwater flush | Yes | - |
| Water-saver flush | Yes | - |
| Macerator | No | No |
| Control | Foot pedal | Hand pump |
| Power | ||
| Draw at 12 V | None | None |
| Bowl and fit | ||
| Bowl size | Round, standard | Compact |
| Bowl material | Plastic | Porcelain |
| Household size | Yes | - |
| Soft-close seat | Yes | No |
| Seat height | 18 in | - |
| Rough-in | 7.6 in | - |
| Inlet hose | - | 3/4 in |
| Discharge hose | - | 1-1/2 in |
| Build | ||
| Weight | - | 21.2 lb |
| Warranty | 2 years | - |