Best RV Macerator Pump: Our 2018 Guide and Reviews




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Flojet 18555-000A Portable RV Waste Pump

Flojet 18555-000A, Portable RV Waste Pump, 12 Volt DC, Macerator, Includes Carrying Case



Jabsco 18590 Series Macerator Pump

Jabsco 18590-2092 Macerator Pump, Self Priming, Run Dry Protection, Waste Evacuation, 12 Volts DC



Clean Dump CDTO Twist-On

Clean Dump CDTO Twist-On Portable Macerator System



Thetford 70200 Box Mount System

Thetford 70200 Box Mount System with Grey Water Bypass



SEAFLO 12V Quick Release

SEAFLO 12V Quick Release RV Mount Macerator Waste Water Pump 45 LPM 12GPM Boat RV Marine


Why use an RV macerator pump?

If you’ve been RV’ing for years, you’re probably wondering why you would need one. I remember looking at macerators at Camping World when we first got started.

I just couldn’t understand why you’d need something that pushes things through the size of a garden hose instead of the 3” sewer opening that you normally use.

Then we had a couple of times where it all became clear as to why you would want an rv macerator with you.

The first time we realized why you would need one is when we were volunteering at a Florida State Park. We were given a spot where the sewer was several feet away and was higher than our black and gray outlets were, so we effectively had no way of dumping.

The next time was when we were urban camping at a friend’s place. We needed to be in the city for a couple of months. She had a 30 Amp outlet and a sewer cleanout that we could use.

The problem was the cleanout was about 2 feet higher than our gray and black tank. Let me tell you, dumping a sewer hose to a cleanout is not fun. You are effectively lifting a full hose of "stuff" several times just to empty the tanks.

Not fun.

After the second time of dumping like this, we started looking for an easier way to handle when the sewer is farther away or higher than your rig can handle.

After doing all that research, we thought it would be easy to share the results with you.

Now some larger, newer rigs already come with permanent macerators and that makes it way easier, but if your rig is older, like ours, then something like this will work for you.

Jabsco 18590 Series Macerator Pump

This one is a great option if you’re looking to mount the pump in your sewer bin.

With this self priming pump, it will empty a 30 gallon holding tank in less than 3 minutes. It has a 15 minute duty cycle that will allow up to 180 gallons removal before shutting off.

So you don’t ruin the pump, it comes with a dry run protection shut off valve.

The blade is stainless steel and has a 4 blade design.


  • Does what you need it to do quickly and easily
  • Fully enclosed, stainless steel shaft


  • Interior bolts have corroded for some

This is a powerful workhorse for the macerators. A portable 12V macerator that comes with a plastic carrying case. Comes with a remote handheld on/off switch and dry run protection.

The stainless steel cutter reduces particles to ⅛” maximum size.

You can just hook it up to your house batteries when needed and it will empty a 30 gallon tank in roughly 3 minutes.


  • Portable and comes with a carrying case
  • Handheld on/off switch


  • Since it’s portable, might need longer wires to reach the batteries on your rig

This one is more of a portable kit and comes with hose and 3” adaptor for connecting with a regular sewer cover.

You can dump as far as 150’ away and uphill with no problems.

Comes with durable alligator clips for connecting to chassis batteries, toad battery, or motorhome battery.


  • Does well uphill and 150’
  • Fully enclosed, stainless steel shaft


  • 10’ hose that comes with it is a bit short

This is a great mounting system that is perfect if you want to have a gray water bypass so you can dump your gray water before running the system.

You can install it in the sewer bin of your rig so you won’t have to pull out the macerator every time you need ot use it.

Comes with a retractable hose for easy storage when traveling.


  • Gray water bypass
  • Comes with drip cap to keep things clean


  • Flex hose isn’t as durable so you’ll want to upgrade hose

This is not a complete kit so you’ll have to buy the switch and wires, but many like it for the cost. Intermittent duty cycyle and thermal protections keeps this pump working for you.


  • Works really well without burning out.
  • Fully enclosed, stainless steel shaft


  • No attachment kit and discharge port is just a pipe-no way to attach a water hose

Our Favorite

Flojet 18555-000A

This is the one we picked when we were looking for a portable RV macerator pump. We added longer 10 AWG wire to the system because our chassis batteries were farther than the built in 6ft wire harness could reach.

I also like the power switch that I can hold while watching everything. Now will any of the portable macerators, I like having a clear elbow at the base so I can watch and know when the tank is finished emptying out. You might want to add that to yours as well.

Types of RV Macerator Pumps

Portable RV Macerator

If your rig wasn’t already built with a macerator in the bay, then you might want to look at the portable styles. The portable ones work well with RVs that don’t have a dedicated sewer bin area. Our Class C doesn’t have a dedicated area so we chose the portable Flojet and are very happy with it. These are run on 12 VDC.

Note: Remember, whenever you have any high-power appliances running you need to have a good surge protector in place.

Permanent RV Macerator

Some of the macerators I’ve covered have a base installation setup that you can permanently setup the macerator under your rig. The best setup would be to have a grey water bypass so you can empy the gray water wilthout having the run the pump. These are also run on 12VDC

110v Macerator Pump

Some people think that having an AC powered macerator might work better for them. It’s a decent thought. Your inverter can handle the power and might not shut off like most 12V DC macerators.

If you’re looking to have one of those, then take a looks at this one. It’s 115 VAC and is sold by a marine shop so it could work for you.


That being said, it might also be way overkill for your rig.

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