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Although a little bulky this pump is made to last. We've had one running for more than 4 years in our solar hot water heating system and hasn't skipped a beat. I've just recently replaced a very noisy 12Vdc pump (cheap Chinese - lasted a couple of months) in our central heating hydronic system with the Grundfos. It was easy to install and runs extremely quietly - it is actually quite difficult to hear when it's on, which is exactly what we needed after having a very noisy 12vdc Chinese circulation pump. The power consumption is also quite good at only 20W on its lowest speed setting. I'd highly recommend these pumps for any hot water circulation application.
Verified purchase: Yes | Condition: New
Grundfos does make good equipment, but this pump is total rubbish, it can not be used or attached outside. Corrosion sets in, the seal most likely is not good enough as it lets water from the rain get inside and blow all inside resulting fuses to blow. My opinion - stay away from this model
Verified purchase: Yes | Condition: New
It was just undo unions, remove old pump, insert new pump, electrically connect and job done. The pump arrived by express post ahead of the stated time. My solar hot water system is now running as designed. The previous pump, also a Grundfos was installed in March 2011 and it was binding on a build up of calcium and up to it seizing had worked every day without a fault.
Verified purchase: Yes | Condition: New
Simple, easy install. Super quiet operation.
Verified purchase: Yes | Condition: New
neat,quiet, easy fit, read to roll once fitted. Three speed is a handy inclusion.
Verified purchase: Yes | Condition: New