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The 8 Best boat shower pumps and sumps of 2024

Are you trying to find boat shower pumps and sumps among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling boat shower pumps and sumps on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 20 hours of research and did 15 boat shower pumps and sumps tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best boat shower pumps and sumps you can buy today

No. 1
SEAFLO Shower Sump Pump System Box Multi Inlet 12V DC 750GPH with 4-Year Warranty
  • 12V 750GPH Multi-Port Shower Sump / Grey Water System. Internal Float Switch- Automatically turns ON & OFF system.
  • Outlet Port: 3/4” Multiple Inlet Ports: 3/4" Port, 3/4" & 1" Port, 1-1/8" & 1-1/2" Port
  • The check valve on the outlet stops water from flowing back into the tank.
  • Removable mesh filter allows easy cleaning. Clear, easy snap-on cover for easy access and cleaning, with gasket seal
  • Industry Leading 4 Year Warranty Dimensions: Length: 13-1/4" x Width: 8-1/2" x Height: 4-1/2"
No. 2
Attwood 4143-4 Shower Sump Pump System, 750 GPH Model, 12-Volt, 22-Inch Wire, Large Box, ¾-Inch Interior Diameter Outlet Hose
  • Delivers outstanding performance for fast water flow into and out of the sump
  • Versatile system can utilize multiple inlets hooked up to more than one drain source using different hose sizes
  • Can handle inflow from the head sink, shower stall, and galley sink
  • Large sump box includes air vent to prevent air locks
  • Lid with gasket snaps in to allow quick installation, and for removal for cleaning
  • ¾-inch interior diameter outlet hose
  • Rated for 12 volts, uses 22-inch wire connection
No. 3
Amarine Made Boat Marine Shower Sump Pump Drain Kit System Shower Pump System 12v 750 GPH - Multi-port Inlet
  • All-in-one unit has box/lid with pump and integrated float switch in it.Removable mesh filter allows easy cleaning.
  • Clear cover. Check valve on outlet.it has a slot-in 'filter' screen to stop hair etc getting into pump.
  • Ignition protected. Handles waste water from more than one tapping point
  • Tight fitting lid to mimimize splashing and odors
  • Easy to install: cut the hose bard end off with a hacksaw for the size you need, then attach hoses - DO NOT OVER-TIGHTEN HOSE CLAMP, YOU WILL BREAK IT EVENTUALLLY! Then wire in the pump.Multiple inlet ports for versatile usuage.
SaleNo. 4
Johnson Pumps - 57151 Shower Sump Pump Multi 1000 GPH , Grey
  • 12V 1000GPH Multi-Port Grey Water System
  • For showers, dish-washing machines, galley sinks, etc. The shower sump turns on/off automatically using Ultima switch. The check valve on the outlet stops water from flowing back into the tank.
  • The shower sump turns on/off automatically using Ultima switch
  • The check valve on the outlet stops water from flowing back into the tank
No. 5
PetierWeit 12V 750 GPH Boat Marine Shower Sump Pump, Built-in Automatic Bilge Pump, Multi-Port Inlet
50 Consomer Reviews
PetierWeit 12V 750 GPH Boat Marine Shower Sump Pump, Built-in Automatic Bilge Pump, Multi-Port Inlet
  • Voltage: 12V DC, current Draw: 3A, flow rate: 750 GPH
  • Easy installation, Multiple inlet ports for versatile usuage
  • Removable mesh filter allows easy cleaning
  • Internal Float Switch- Automatically turns ON & OFF system
  • The pump is designed for Intermittent use,duty cycle: 30 minute intervals
No. 6
NovelBee 12V 750 GPH Boat Marine Shower Sump Pump Drain Kit System,Built-in Automatic Bilge Pump,Multi-Port Inlet Sump Pump
  • Pump voltage:12V DC,current Draw: 3A,flow rate: 750 GPH
  • Shower pump easy installation,multiple inlet ports for versatile usuage
  • Sump pump is designed for Intermittent use,duty cycle:30 minute intervals
  • Shower sump pump internal float switch-automatically turns on & off system
  • Boat marine shower sump pump can also be used for sink water (without large particles/waste) and can pump water overboard or into a holding tank
SaleNo. 7
Attwood 4141-4 Shower Sump Pump System, 500 GPH Model, 12-Volt, 22-Inch Wire, Standard Box, ¾-Inch Interior Diameter Outlet Hose
  • 12 Volt
  • 36" wire
  • Max. Pump Amp Draw: 10A
  • Industry leading 5 year warranty
  • Directly compatible with all other competitive products.
No. 8
DasMarine12V 750GPH Multi Port Marine Boat Shower Sump Pump Drain Kit System
  • Built in automatic 12V 750 GPH Bilge Pump; Internal Float Switch- Automatically turns ON & OFF system.
  • Outlet Port: 3/4” Multiple Inlet Ports: 3/4" Port, 3/4" & 1" Port, 1-1/8" & 1-1/2" Port
  • Inside Check valve on the outlet stops water from flowing back into the tank.
  • Removable mesh filter allows easy cleaning. Clear, easy snap-on cover for easy access and cleaning, with gasket seal
  • Easy installation; Ignition protected; Tight fitting lid to mimimize splashing and odors
No. 9
Five Oceans Shower Sump Pump Drain System Kit, 750 GPH, 12 Volts, Multiple Inlet Ports, Easy Installation, Ignition Protected, Clear Cover, Check-Valve on Outlet - FO3611
  • All-in-one Pump and Integrated Float Switch Automatically turns On/Off System. Flow Capacity: 750GPH /2839LPH. Voltage: 12 Volts. Ignition Protected. 18AWG Long Leads
  • Handles wastewater from more than one tapping point. The check valve on the outlet stops water from flowing back into the tank
  • Outlet Port: 3/4" Multiple Inlet Ports: 3/4 Inch Port, 3/4 Inch, and 1" Inch, 1-1/8 Inch and 1-1/2 Inch Port
  • A removable mesh filter allows easy cleaning. Clear, easy snap-on cover for easy access and cleaning, with gasket seal
  • Safety standards CE, ROHS, ISO9001:2008 Approved. Ideal for Marine, Boat, RV, Motorhome, Caravan, Camper, Trailer. FIVE OCEANS, 40 Years Developing High-Quality Marine & Outdoor Products
No. 10
SAILINGFLO Shower Sump Pump System Boat Marine RV Drain Kit 12v 750GPH Multi-Port Inlet
  • All-in-one pump & switch – No float switch required.Pump turns on when water level rises & shuts off when water is removed.
  • Water cooled motors for long life, with anti airlock design and moisture tight seals. Heavy duty motors with stainless steel shafts and tough thermoplastic bodies.
  • High quality, 100% marine grade UV stabilised white ABS plastic construction.
  • Output: 750 gallons/hour, Max. recommended discharge head 3.0m. Designed to pump shower/sink water overboard or into a holding tank.
  • Clear snap-on cover for easy access and cleaning, with gasket seal.
No. 11
SEAFLO 750GPH 12V 3.0A Shower Sump Pump System Drain Kit System Multi Port Inlet
  • Flow capacity: 750 Gallons per hour ( 2838 Litres per hour), 12 Volts DC
  • High quality, 100% marine grade UV stabilised white ABS plastic construction
  • Compact, full capacity automatic shower sump draining kit
  • To all existing safety standards ( CE, ROHS, ISO9001:2008 Approved)
  • 2 years warranty
No. 12
Rule Shower Drain Box w/1100 GPH Pump - 12V [99B], Standard
79 Consomer Reviews
Rule Shower Drain Box w/1100 GPH Pump - 12V [99B], Standard
  • Made in Mexico
  • Product Type :BINOCULAR
  • Package Dimension :14.909 cm x 25.704 cm x 35.509 cm
  • Package Weight :1.969 kg
No. 13
SEAFLO DC Shower Sump Pump System Box Multi Inlet 12V 750GPH
  • SKU: SF01009
  • Color: White
  • Material: Plastic
  • Flow Rate: 750GPH
  • Volt: 12V
No. 14
Acouto Shower Sump Pump 12V,Shower Sump Pump System Boat RV Bilge 12V 750GPH Marine Multi Port Drain Box
  • The pump has a built‑in switch, which can automatically control according to the water level, no external float switch is required.
  • Shower Sump Pump 12V,Transparent snap‑on cover with gasket seal and removable mesh filter for easy cleaning.
  • This shower sump pump systerm has multiple sizes of port connector, easy to operate.
  • Boat Shower Pumps,Built‑in check valve, which can prevent dirty water backflow to the bathtub and cabin.
  • With ignition protection function, no need to worry about the unsecure factors when you start it.
No. 15
Yesinaly Shower Sump Pump for Boat Marine RV - 12V 750GPH Multi Port All-in-one Shower Sump Pump System, Small Drain System Kit with Multiple Inlet Ports
  • All-in-one pump and integrated float switch to automatically turn on/off the system. Flow rate: 750 GPH . Voltage: 12 volts. With ignition protection. White ABS plastic construction
  • Outlet: 3/4" multiple inlets: 3/4" port, 3/4" and 1", 1-1/8" and 1-1/2" ports, check valve on outlet stops water from flowing back into the tank
  • Output: 750 gallons/hour, Max. recommended discharge head 3.0m. Designed to pump shower/sink water overboard or into a holding tank
  • Easy installation and removal. Removable mesh strainer for easy cleaning Clear, easy snap-on lid for easy access and cleaning with gasket seal
  • Suitable for Marine, Boat, Caravan, Caravan, Camper, Trailer, Family Homes, Household,Yacht
No. 16
Attwood 4131-4 Aft-Deck Hot and Cold Freshwater Exterior Boat Shower Box Kit
85 Consomer Reviews
Attwood 4131-4 Aft-Deck Hot and Cold Freshwater Exterior Boat Shower Box Kit
  • Add the convenience of a hot/cold freshwater shower to your deck
  • 6 foot hose with replaceable hand held shower spray
  • Required Cutout Size: 8-1/2 inch x 4 inch
  • Installs flush in the transom or under a gunwale
  • High impact plastic construction
SaleNo. 17
Whale BP1552 Gulper 220 Pump, Manages Gray Waste, 3.5 GPM Flow Rate, 12V DC, ¾-Inch Hose Connections, Black
  • Efficiently pumps gray waste, including handling shower waste such as hair and gel that can clog competitive pumps
  • Virtually non-choke valves, and there’s no filter to maintain and unblock
  • Double-outlet valve ensures continuous flow, and this 12V DC pump operates efficiently with a low power draw
  • Has ¾-inch hose connections, is easy to install in confined spaces, has multi-directional head for optimal installation versatility
  • Reliably self-priming up to 10 feet, has a 3.5 gallons per minute flow rate, and will run dry without damage
No. 18
Shower Sump Pump, DC 12V/24V 750GPH Shower Sump Pump Automatic Switch Bilge Drain Box Multi Inlet for Marine Boat(24V)
  • Adaptation: Shower Sump Pump is fits for Attwood/ for Johnson/for Rule footprints. The unit has multiple inlet port sizes for a variety of uses, meet your different needs.
  • Function: 750GPH shower sump pump with built in automatic float switch, stable and professional. Full submersible electric pump, designed to pump shower/ sink water overboard or into holding tank.
  • Excellent Performance: With ignition protection, and built in check valve on outlet to prevent backflow. Clear clip on cover for easy access and cleaning, with gasket seals.
  • Easy to Install and Clean: Shower Pump System is easy to install. Removable mesh filter allows easy cleaning, bring much convenience for you.
  • Quality Assurance: We offer a 12 month warranty, true worry free shopping experience. If you have any problem, feel free to contact us, our professional mechanic will sort things out for you.
No. 19
DC 12V/24V 750GPH Marine Shower Sump Pump, ABS Multi Inlet Automatic Switch Bilge Drain Box for Boat Yacht G750-01(24V)
  • 【Full submersible electric pump】750GPH shower sump pump with built-in automatic float switch, designed to pump shower/ sink water overboard or into holding tank,stable and professional.
  • 【Multi Inlet】The unit has multiple inlet port sizes for a variety of uses, meet your different needs.
  • 【Outstanding advantages】Marine Shower Sump Pump with ignition protection, and built-in check valve on outlet to prevent backflow.
  • 【Convenient clean】Removable mesh filter allows easy cleaning, clear clip-on cover for easy access and cleaning, with gasket seals,bring much convenience for you.
  • 【Easy installation】Easy to install, fits for Attwood/ for Johnson/for Rule footprints.
No. 20
SEAFLO 12V DC Shower Sump Pump System 750 GPH 2.5A Bilge Pump for Boat Caravan
  • 750 Gallons per hour automatic pump with built-in float switch, turns on and off

How to choose a good boat shower pumps and sumps

Does the idea of finding a fantastic boat shower pumps and sumps make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in boat shower pumps and sumps. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top boat shower pumps and sumps products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top boat shower pumps and sumps on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top boat shower pumps and sumps brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top boat shower pumps and sumps based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the boat shower pumps and sumps were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good boat shower pumps and sumps, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your boat shower pumps and sumps.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting boat shower pumps and sumps for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our boat shower pumps and sumps. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what boat shower pumps and sumps should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on boat shower pumps and sumps.