Grundfos59896341 UPS15-58FC Super Brute Circulator, Red, Small

Put this on my natures comfort outdoor wood stove. Worked well and was easy to install. Good quality built and good reputation. This is my second one.

Theis pump has three speeds and is a top of line brand. It is very easy to be wired up... user friendly and runs quiet.

You will need to plumb in the pump by buying a flange set for the pump and then you will need to run 120 volts of electricity to it. You can easily run this pump off a photo voltaic power grid because it is so good at using electricity.I used it on my solar hot water heater for the hot tub. Works great and pumps about 4 to 5 gallons per minute.(this will vary depending on length of run and height water must be pumped to plus sos(some other stuff)) It keeps my hot tub(1500 gallon size) at a perfect 100 degrees all day for under 5 cents of electricity per day. (based on 6 hour average day of sun year around) So use this pump in conjuntion with a solar hot water heater and keep your hot tub perfectly hot for about $1.26 per month.

Installed this pump last July during boiler shutdown. Throughout this winter so far, after several severe cold weather spells, this pump has performed flawlessly. It is very quiet---I only hear water moving in the pipes if I listen carefully!! This pump is Silent with a capital S! We had a conventional pump/assembly and electric motor set-up for 20+ years and those were noisy (at the boiler and throughout the system). Now, all I hear (At the boiler) is a click from the thermostat relay and the burners lighting in the boiler. Wish I knew of these pumps some time ago. Installation was less a headache than I expected. The best part = no more oiling. I used to oil the motor and the bearing assembly in the old setup and spent many moments trying to second guess myself on whether I got it right. I left the old set-up on a shelf in the garage in case I needed it. Now it looks like I can get rid of the old parts. I kept the check valve in the pump when installing and noted the water must stay stationary when the boiler is off because the temp of the pipes at the boiler remain hot. This tiny pump has more than satisfied the heating needs of our home under all conditions thus far (January 16, 2014).

I replaced an existing Grundfos pump that went kaputt after 13 years. All the input from community regarding my questions was very helpful. The flange shape was slightly different but the O ring fit both openings that were already plumbed in. I tightened the bolts and no leaks thank goodness The old pump was single speed , the new one 3 speed. I cut the difference and set it to medium. I was able to use the existing power cord and connected easily to the pump’s electrical configuration. Quiet and most importantly instant hot water. I ordered the flange kit, but didn’t need it since It came with new O rings and was able to use the same housing and bolts that were there already. If I even get half the life I got from the last one, I will be very satisfied because the price is right.

The first one we ordered was rusted inside and noticed that the inside of the box had been wet and the instructions were also water damaged. We received a new replacement without any issue

This product Warranty covers 24 months.After 13 months, this Super Brute Circulator pump disintegrated. I researched the warranty, procedure which says to call the seller.I called Amazon and they do not do warranty service beyond 30 days but referred me to the manufacturer's rep. who stated that since I bought it through Amazon I that need to "fight" it out with them!!!Amazon came through and refunded my purchase through the A to Z warranty!Thank you Amazon!

Quiet and reliable. Wish it had an integrated bleed valve (maybe they do now, they didn't in 2016). I'd recommend installing a ball valve with bleeder on the inlet side (bleeder facing away from the pump) if using for recirculation, bleeding the system is critical for operation, and has to be done every time my plumbing is drained. Ymmv.