Grundfos 59896341 UPS15-58FC Super Brute Circulator, Red, Small

This was great stuff. Works super. This is my brand for the job.

The Grundfus Circulating Pump was ordered on a Friday at 5:00 pm and it was delivered (free) to my door the following Monday at 9:00 am. It appears the unit was shipped from Mississauga, ON vs. the Seller location in Victoria, BC. The Amazon pricing was very favourable compared to local bricks & mortar vendors. Packaging at the Amazon Distribution Centre was adequate but not outstanding... Grundfos documentation states: "Take care to ensure the pump is NOT dropped or mishandled; dropping will damage the pump". Clearly written & illustrated instructions are included together with a pair of new rubber gaskets. The replacement pump was virtually identical to the original 18 year-old unit with worn out bearings. Installation was straight forward and took less than 5 minutes (excluding preparation & clean-up). I'm disappointed Grundfos does not design these units to be refurbished with new bearings & seals but recommends "Disposal in an environmentally sound way". Overall, a very good experience and highly recommended.

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.

Installed in the circulation line for our underfloor garage heating system. At first it squealed quite a bit and it didnt seem to be moving any fluid at all. I uninstalled it and removed the white plastic backblow valve on the output side of the pump, then primed the pump from the output side but filling the line with fluid and reconnecting it. After that the pump was nearly silent and we could see the fluid moving very quickly through the lines. If this pump is operating properly you shouldn't hear much noise, its a barely noticeable hum.

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).