BYT-7A014 DC 12V Solar Hot Water Heater Circulation Pump

Worked for long time

Worked perfectly for 3 days then died. Update 3-13-17: I returned this item for an exact replacement. The second pump has worked perfectly for over a month. I have it mounted just above a 20plate heat exchanger on my water heater so it pulls water through the exchanger. There is a natural thermal cycling that heats my domestic water via my outdoor wood stove but it was slow so it was still possible to run out of hot water if laundry and kid's bath and my shower were all done within a couple hours. Now we truly have endless hot water. This little pump works at about 2gpm and is very quiet.

Using this to pump my kombucha through an 80 mesh filter before bottling. Pump does not self prime, that's where that last star went. I'm using silicone tubing and it collapses from the suction, recommend a more rigid tubing. Pump is loud when priming it and when it runs dry, but quiet once liquid is flowing. If mounting this in a camper I'd recommend rubber bushings or some other kind of isolated mounting.

If you are looking for a ready to go, light duty, pump that you can have work right out of the box, this is it. Getting it started is the hardest part, but once it starts it seems to have a good FLOW. They did state that it was non priming, so if you are going to complain about it shame on you. I am using it to pump aquarium water through a UV filter. Pushing about 4 foot of lift. Pump has been running and feels warm but not hot. I could not find a cheaper pump that has a in and out port, most are drop in pumps that have an out fitting only. How long it lasts will last under my work load will determine its value. Updated-- too bad so sad. Don't let it run dry, or the pump is done for.

I purchased this pump in December 2025 to circulate warm water to keep my chickens' water supply from freezing in the mild winters we get in the Southeastern US. The pump was on a thermo switch and ran only when temperatures fell below 35°F / 1°C, so it may have had ~400 hours of operation, and it's already dead. The plastic impeller has the motor's rotor wrapped around the drive shaft. Unfortunately, it's a friction fit (at best), and over time, the rotor works loose from the impeller shaft. The impeller is held in place by two small pins at either end of the shaft, which sit in plastic cups. Over time, the friction of the plastic on plastic becomes higher than the friction of the plastic to the rotor, and suddenly, you'll get just the rotor spinning around the impeller shaft. When that happens, the pump transforms into a heating element, and the casing temperature rises well above the boiling point of water (212°F/100°C). My pump got so hot when it failed that it burned my fingers to touch it, and water flashed to steam when poured onto the housing. So, it may even present a fire hazard.

We purchased exactly 2 years ago and it has quit on us. I use it for our chicken waterer and it usually only runs in winter time with a temp sensor or when I plug it in on occasion to circulate their water, so I hoped it would’ve lasted longer.

Great little pump - I have a couple in use currently for hot water circulators. I run a line from the furthest hot tap in the house back through this pump, then a check valve, then into the bottom of my hot water tank. A timer runs the pump for a minute or two every 20-30 minutes to keep the water in the line hot, resulting in nearly instant hot water at the taps. They have been running like this, circulating hot water every 20 minutes or so for several years now without a hiccup. Would not hesitate to use again.

I have a 55 gallon rain barrel that I put a small heater inside so that the water doesn't freeze in the winter. I've attached a washing machine hose from the barrel into a 1" pvc pipe that has nipples on them that my chickens drink from. The problem is on cold days, even with the heater in the barrel, the water in the 1" pvc pipe would freeze. This pump ensures that doesn't happen. I have it plugged into a temperature sensitive outlet. I have it set to turn on at 37F and turn off at 41F. It's constantly pulling the warm water in the barrel into the pipe and back into the barrel to be heated again. We've so far gone down as low as 9F with no issues. Now this is just the first year. Will it still work flawlessly 10 years from now? Let's see.

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