When you're rigging a boat, the bilge pump is one of those parts you want to think through before water starts sloshing. Two 12V submersible options sit at very different price points: the 750GPH Automatic Submersible Bilge Pump, an all-in-one unit, and the 1100GPH Electric Marine Submersible Bilge Sump Water Pump, a high-capacity submersible pump. They're built around different priorities, and the price gap reflects that.
Quick Verdict
Choose the 750GPH Automatic if you want hands-off operation. Choose the 1100GPH if you want more rated pump flow for the least money and are comfortable handling the switching yourself.
750GPH Automatic vs. 1100GPH: Side by Side
| Feature | 750GPH Automatic | 1100GPH Electric Marine |
|---|---|---|
| Price | USD 48.95 | USD 7.96 |
| Price bar | ||
| Flow rate | 750 GPH (12.5 GPM) | 1100 GPH |
| Operation | Automatic all-in-one float switch | Submersible 12V pump |
| Material | Polypropylene | Heat-resistant ABS |
| Extras | Ignition-protected design, 5-blade impeller, 3-ft wire lead | Universal mounting holes, snap-lock strainer base |
Where Each Pump Wins
The 750GPH automatic wins when you want the pump to start and stop on its own. Its ignition-protected design is aimed at enclosed bilge compartments, and it doesn't need a separate control panel.
The 1100GPH wins when you need more rated flow per hour and want to keep the purchase price down. Its description also covers aquariums and fountains, so it can pull duty beyond the bilge.
Product Notes
750GPH Automatic Submersible Bilge Pump
The 750GPH automatic earns its keep when you want the pump to take care of itself. The 3-ft wire lead adds a bit of positioning freedom in a tight bilge, and the White, Orange, and Black color options give you visible distinction for wiring runs. The polypropylene body keeps weight down, which can help on smaller boats where every pound matters. The main limitation is the price: at $48.95, it's over $40 more than the 1100GPH pump, so if you already have your own switching controls or would rather trigger the pump manually, you're paying for convenience you may not use. For a boat that spends a lot of time unattended, that convenience can be worth it. If you regularly leave the boat on a mooring or dock, an automatic pump removes one more thing from your pre-launch checklist.
1100GPH Electric Marine Submersible Bilge Sump Water Pump
The 1100GPH is the budget workhorse when you want a lot of pumping capacity without the built-in automatic controls. Its ABS housing is heat-resistant, and the universal mounting holes plus snap-lock strainer base make installation and cleaning quick-both useful on a boat that sees regular use. You can also use it in a fish tank or fountain, which broadens its appeal beyond the bilge. The trade-off is that it's not an all-in-one automatic system, so you'll need to handle the switching yourself if you want hands-off operation. The ultra-low purchase price makes that extra planning easy to accept, and the cleaning-friendly base means routine maintenance won't be a headache. It's a simple, direct pump for straightforward installations.
Final Choice by Use Case
If your priority is hands-free protection in an enclosed bilge and you want a self-contained float-switch package, go with the 750GPH Automatic Submersible Bilge Pump. If you want maximum rated gallon flow for the smallest outlay and don't mind arranging your own switching, the 1100GPH Electric Marine Submersible Bilge Sump Water Pump is the clear pick.
