KOLERFLO 3/4 Inch Hot Water Circulating Pump 3-Speed Circulation Water Pump for Solar Heater System(RS15-6 Red)
Key features
- •Rated power: 93/67/46 W. NPT 3/4 inch (19.05 mm) inlet/outlet. Voltage/Frequency: 110-120V, 60Hz. Max pressure: 145 psi (10 bar),the circulation pump with three-speed control. Flow: 36/29/20 LPM (9.5/7.66/5.28 GPM). Max head: 6/4.9/4 m (20/16/13 ft);Pump housing: Aluminum. Impeller: Corrosion-resistant, composite, PES. Shaft: 45 # steel. Bearing: Carbon axia.
- •Easy installation, only need a wrench to connect the pump to the pipeline, saving you the cost of plumbers; Instant hot water, waiting for 2-3 minutes in the past, now it takes only 15 seconds to get hot water.
- •Prevent pipes from freezing in winter, especially for cold winter areas. In addition, if your pipes pass through the floor, the floor will also become warm.
- •The circulation water pump features high efficiency with low consumption. High temperature resistance, anti-fraying, high flow and leak-tightness. Super silent, environmental friendly,saving energy, running power, reducing the waste of cold water and waiting time, suitable for water scarce areas, such as desert areas.
- •KOLERFLO circulation water pump RS15-6 Used in Suitable for city buildings, suburban villas, houses, water and pressurized with industrial equipment, air conditioning, boilers, solar circulating water, hot water circulating warm and so on.
KOLERFLO 3/4 Inch Hot Water Circulating Pump 3-Speed Circulation Water Pump for Solar Heater System(RS15-6 Red)
List Price: $86.93$78.24DEALYou Save: $8.69 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It October 26, 2026In Stock (2)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.1
out of 5
Based on 10 reviews
5★
80%
4★
20%
3★
0%
2★
0%
1★
0%
Great value and super quiet!
Timothy Kowalik✓ Verified Purchase•July 31, 2023
Definitely a nice pump. Very quiet and seems to be plenty powerful to get the hot water circulated.
As some others have mentioned, the threaded are 3/4 straight thread. All copper threaded pieces are typically tapered (NPT). The way I got around this was to use dielectric fittings with a 3/4 FIP to 3/4 sweat ends. This does two things for you. One, it gets you the straight threads to get a good seal with teflon tape. And two, it allows you to totally remove the pump without having to cut any pipe.
I run the pump using a smart plug hooked to my google home. I set up a custom routine so I just have to say one word and it runs the routine of "Turn on hot water for 1 minute" where the smart plug is named "hot water".
As some others have mentioned, the threaded are 3/4 straight thread. All copper threaded pieces are typically tapered (NPT). The way I got around this was to use dielectric fittings with a 3/4 FIP to 3/4 sweat ends. This does two things for you. One, it gets you the straight threads to get a good seal with teflon tape. And two, it allows you to totally remove the pump without having to cut any pipe.
I run the pump using a smart plug hooked to my google home. I set up a custom routine so I just have to say one word and it runs the routine of "Turn on hot water for 1 minute" where the smart plug is named "hot water".
pump did not work.
Robert Anderson✓ Verified Purchase•July 16, 2023
I mistakenly wrote a poor review but like many poor reviews on Amazon: it was user error. I recently moved to the southwest and didn't realize the nature of hard water and had plugged my check valve on the return line. I have a water softener but even with the use of that; it still built up calcium and stopped the return flow of water. the pump is working great now after cleaning out the valve.
Works fine.
Mendel Kaplan✓ Verified Purchase•July 13, 2023
Donna what the bad reviews are all about, but this little chineseum circulator pimp works just fine. Simple enough to install, runs well, pulls the rated power on all 3 speeds, does what it needs to. There's one complaint, the gasket used to seal the big "vent" screw in te center of the motor case, is no good. It leaks once you loosen the screw to vent the motor case, even after tightening it down like crazy. I had to use a (very) large flathead with a wrench on it to finally get it to stop leaking. All while very hot water is spraying on my hands.
Also could have come with a union style thread, as it is I had to buy 2 sets of sweat x fip unions to install it. Look for a dielectric union in the pipe type you have.
Also could have come with a union style thread, as it is I had to buy 2 sets of sweat x fip unions to install it. Look for a dielectric union in the pipe type you have.
Best hot water circulating pump ever.
Amazon Customer✓ Verified Purchase•May 30, 2023
It is hands down over the Watts. Instant hot water. cost is much less than Watts.
Exceeded expectations.
DianeM✓ Verified Purchase•May 24, 2023
We used this pump in our radiant floor heating setup as a temporary solution.
After one winter of use, I took it apart to check for corrosion, and to my surprise, it was clean. I'm going to add a second one of this style now and we will be relying on these "cheap" pumps to keep our house warm, that is the amount of confidence earned versus buying the 5x price pumps we replaced.
I expected the threads to be sloppy due to the price, however I taped the threads like any connection and 6 months of 20 to 40-ish supply PSI later, no leaks.
Just make sure you prime the pump!
After one winter of use, I took it apart to check for corrosion, and to my surprise, it was clean. I'm going to add a second one of this style now and we will be relying on these "cheap" pumps to keep our house warm, that is the amount of confidence earned versus buying the 5x price pumps we replaced.
I expected the threads to be sloppy due to the price, however I taped the threads like any connection and 6 months of 20 to 40-ish supply PSI later, no leaks.
Just make sure you prime the pump!
Page 1 of 2
