bayite BYT-7A006 DC 12V Solar Hot Water Heater Circulation Pump Low Noise 3M Discharge Head 2.1GPM

I used this pump to install a hot water recirculation system in our RV. The water heater is in the rear and the bathroom is forward. A lot of water is wasted waiting for the hot water to arrive. We boondock a lot so conserving water is important. This pump is almost silent. I did use caution to ensure the attaching fittings were not too tight (to prevent breakage of the plastic fittings)...but more than tight enough to prevent leaks. The amp draw is tiny. I tied this to a 12 volt digital temperature controller that is set at 100/85 degrees Fahrenheit . The temperature probe is on the cold water side where the hot water will eventually get to when the pump is running. With the system ON, if the cold water side is below 85 degrees, the pump will turn on and pump hot water through the supply plumbing. When the probe reaches 100 degrees the controller turns the pump off. Now I have hot water within 2' of the shower and lavatory. It takes about 30 seconds for this cycle to complete. This will also be good for our winter camping as it will keep warm/hot water in the lines. This is a low volume pump. It does not move much water when running. But again...there is no need for it to. I remain very pleased with this pump. I can't speak to the longevity, but for now it is perfect.

Bought this to make a rock water feature. Wired it up to a small solar panel and it works great. Flow rate is good as long as you have sun but you could also wire this up to a battery if necessary. Pretty quiet and has been running for 3 months now.

[Update after 8 months] I disabled and drained the pumps (I have 3) for a few months in the winter, but left them connected and exposed to freezing temps. And we had some serious freezing this February! When I reenabled the pumps in the spring, they resumed working as before. So, reliability seems good. They run on a timer now, about 8 hours a day every day. I guess that means they've been working for well over 1000 hours so far, in outdoor conditions (though protected from direct sunlight). [Original] I got this pump for a remote-watering setup, and planned to run it off a solar panel. I'd have water pressure whenever the sun is shining, and can use that little bit of pressure to recirculate the water to cut down on algae growth. And, when the hose timer opens, the pump will also push water through the hose timer at a more-reliable rate. (Relying on gravity alone for pushing water through the timer has been unreliable.) That is, the pump will push water up to the top of the tank to recirculate through a 1/4" hose, and also down to a hose timer to irrigate through a 1/2" hose. A 1/2" irrigation riser with a "barb tee" was an easy addition to the output of this pump. The pump is rated at 12V, 0.7A, which is 8.4W, so I got a 10W solar panel. In July Texas sun, that solar panel couldn't get the pump to move. It seems the startup current draw for this pump far exceeds 0.7A, because it pulled the solar panel output down from 17V to 6V and the pump just made a buzzing noise but wouldn't spin. When connected to a battery, the pump works great and drained a bucket of water so fast I barely had time to measure voltages. If I got the pump started with the battery, and then disconnected the battery but left the solar panel connected, the pump kept running, but not as briskly. I didn't measure the current draw, but I've got some doubts about the claimed power requirements of this pump and the solar panel. I might order a higher-wattage solar panel, but more likely, I'll just run this thing off a battery with a timer (so that it doesn't run 24/7 and drain the battery), and use the solar panel to charge up the battery. This cheap-and-easy remote watering setup keeps getting more complicated and expensive!

Pretty good pump, used it to pump water into children's playground about 4ft above the ground. Worked just with 12v LiFepo4 battery for days and days. Needs priming and will stop working if bubbles are in the pipe. Just place it below water level and prime again if bubbles got in. For the price, highly satisfied.

as advertised. works so far flawlessly

Worked great for the first few hours then burned up by the fourth hour. Motor just hums. Wires are thin 20 gauge, they should be 1 size bigger. It was drawing 0.75 amps from my 12.5V battery, 0.9 amps from the 16.5V solar panel. I measured close to 1 gpm with about 5 feet of head. A little less with the battery, a little more from the solar panel. There were no directions so what ever I wasn't suppose to do, never explained. I tested partial shading of the panel and didn't have problems. Maybe it can't handle sundown. But I thought that was the whole point. It's a solar water heater pump so pump when it's sunny, stop without sun. I sent a note to the seller, we'll see if they answer. Only ran for 4 hours :-( I tested just for this reason because if the pump ever doesn't come on, your solar water heater will blow the P/T safety valve and water will flow all day. If the P/T safety fails, it can burst hose not far from the solar water heater.

This little pump out performs another pump that is twice the size, it is very quiet and pumps water very efficiently I am very happy with it and will order a second one shortly. Highly recommended!

works great for a solar pool heater

These little pumps have multiple uses. I purchased this to replace my existing water feature pump which failed. These pumps are solid little things and very efficient.

Ran continuously for the summer, no problems. It's submersible and the threaded input allows for a good and easy filter installation to protect it.

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