ZeroPone Hot Water Recirculating Pump, Water Circulator Pump, 120W 110V Automatic Circulating Pump Stainless Steel Head NPT 3/4" w/NPT 1/2" Adapter,15-9S Dual Control for Electric Water Heater System

I originally ordered the 15-9S pump, thinking I needed the volume for my water heater recirculation system. Forewarned being forearmed, I ordered the BSP (or G) to NPT 3/4" adapters, as I needed 3/4" feed out of the water heater, so I didn't want to use the 3/4" to 1/2" adapters that came with the pump. With the adapters, I had no leaks and no problems, certainly none of the problems that some have reported. I used minimal teflon tape (4 wraps or so), and the rubber gaskets that came with the fittings with no issues. The problem I did run into was the pump was more than I needed. It is rated at 120W at 30L/min, and I felt like the 15-9S was noisy. I could hear it through my garage wall, although my wife could not. With a circulation system that is fully insulated from the water heater through the house and back, all I needed was a trickle, so I decided the 15-6S with the stainless pump and multiple speeds was what I needed. I contacted the ZeroPone customer service and asked if there was a chance I could exchange the 15-9S for the smaller one I wanted, even though I was 4 months from the purchase date. (The extenuating circumstance was I was building a house and it was over 3 months before I could actually run the pump.) Not only did they agree to send me a 15-6S pump, they gave it to me with no return of the 15-9S necessary! It took me a while to get to installing the new pump, but it is whisper quiet and supplies more than enough hot water through the house, now at 40W instead of 120W. As another reviewer noted, there is no off switch, so I installed the pump on a smart plug and I have Alexa turn it on in the morning and off late at night. At 60 feet from the tank, it takes under 8 seconds to get hot water at my guest bathroom sink, and the shower is virtually instantly hot. I wish I could give it 4.5 stars and not 5 (Their customer service deserves 10!) only because the headline description clearly states NPT threads when it is not. Lower in the post of the pump, however, in the Q&A drop-down sections, it clearly states it is BSP threads, but you have to go looking for that information. I highly recommend this pump and this company, with the caveat of needing the correct adapters, also available on Amazon. The adapters can clearly be seen in my photos. The short video is only to give a sense of how quiet this pump is: I cannot hear it at all, although the water movement or my check valves cause a little noise. For the great comfort this little pump gives, at the purchase price and cost to run it, I'll put up with a tiny bit of noise!

Worked for me out of the box. It's surprisingly super quiet, was not expecting that. It's installed in the garage and I can barely hear it, if i cant hear it at all, standing next to it. Very very faint hum. Plugged it into a wifi smart outlet thing for control. Comes on between 6am and 10am, and 7pm and 11pm. Instant hot water in the whole house during that time. Seems pretty durable, no issues yet. Been about 6 months or so, on the same schedule.

Worked perfectly with my tankless water heater

This pump is complete junk and a huge disappointment. It started leaking in less than a year after installation, which is completely unacceptable for a component tied into a home’s water system. By the time I noticed the issue, there was already about an inch of water along the wall in my basement mechanical room. I was extremely lucky to catch the leak just one day before leaving for vacation, or the damage could have been severe. I had to make an emergency trip for plumbing parts just to remove the pump and reconnect the pipes where it had been installed. Poor quality, unreliable, and absolutely not worth the risk. One star.

I’ll be honest with you, if this had a normal NPT fitting this would be a much shorter review. However, given that this pump has a short BSP fitting it made getting a leak free fit very difficult. I ended up needing to purchase multiple additional fittings (BSP to NPT adapter, 3/4x3/4 female NPT & 3/4 NPT to push connect braided) to make it work. Make sure you are careful and use plenty of teflon tape and/or pipe dope. Ensure all rubber gaskets are not over tightened. And if you have enough patience, you can eventually make this work without a leak. Once I finally got a leak-free fit, the pump itself works great. I have the pump connected to a WiFi plug and set it to turn on for 5 min every half hour. It is very quiet and seems sturdy. Time will tell, but after I got through the process of getting a good fit it seems to be a good value.

Seems to be surprisingly good quality however the unions provided are too large to solder onto 1/2 copper pipe. You have to use a half inch female adapter or some other type of threaded fitting. The little pump pulled that hot water around the entire 2000 square-foot house very quickly and operates fairly quietly. Overall I'm happy!

So my home comes with a hot water circulation system. What this means is that it’s constantly pushing hot water throughout the house in a circular motion through the pipes so that whenever you turn the hot water on a faucet, you have almost instant hot water. The initial pump that was installed when the house was built I presume, we didn’t build the house, was a much smaller pump that was mounted on plastic waterlines that ran down the side of the water heater. The way this was initially gave me nothing but problems with the pipes busting on several occasions. So I decided to give this pump a shot, had to buy a little bit of additional hardware to get it to fit just right, but was able to mount it directly on top of my water heater into my circulation system. Now works perfectly and I’ve not had a problem since. The motor and the pressure it provides are so strong that I actually only use it on the lowest setting because it works so well. The only regret or negative comment I would make, is that I do wish I would’ve went ahead and spent a few more dollars and bought the model that has the stainless steel housing as opposed to iron. I’m sure due to irons rusting nature, the model I purchased is not gonna last quite as long. I suspect the motor will end up outliving the housing. Nevertheless, they’re pretty inexpensive to replace, fairly easy to install, and I would definitely recommend.

Has installation requirements that limit how it is installed. Has different features that are not well described, trial and error. Gets hot. Operates very quietly. It has worked well ( for about two months).

Installed this pump on the cold side of water heater as a recirculating pump and last one day, it over heated overnight crating a fire hazard and melt the electrical box/switch. I also couldn't find instructions anywhere on how the Auto mode works or even how to program Auto mode. Well this pump is absolutely junk.

Pump bought for home hot water and installed for instant hot water due to long distance to taps from hot water tank. Impressed with protective packaging. Very quiet and has no problem pushing fluid past a spring loaded check valve even on low speed. Glad I bought the stainless steel pump body over the cast iron clones available! Seems very high quality including the pump connection adaptors. Shipper dropped the ball but had to come through customs. 10/10

I like the stainless construction. I am using it as a circ pump from my hot water tank across a heat exchanger to heat my hottub. When the hot tub calls for heat, this turns on to circ hot water from my hot water tank.

Looks like this was used before (bleeder screw had damage). No pressure coming out of this after priming. Pump looked like great quality. Need to try and return.

Really? Melted down after a few months of usage. The origional Taco pump lasted for more than ten years!