Grundfos Alpha 2L 15-60
we have a modern boiler on an old system this pump should sort out our pressure problems with THV and the DHW taking a long time to heat up.
can not put an accurate reliability star as only just fitted it, ask me again in 5 years.
19 Jun 2015
The Grundfos Alpha pump in my house was a few years old, when we moved in 7 years ago. It tripped out the mains RCD at 08.20am. I traced the fault, ordered a new Alpha2L pump from my local Screwfix and had it all replaced by lunchtime. The longest part of the job was getting the air out of the system. The pump was easy to install and set up.
Looking forward to not touching it again for at least 10 years.
12 Apr 2015
Not the most reliable
My first one of these lasted till just outside of the warranty and then just stopped! Rotor was clear to run and motor and pump showed very little sign of wear. I conclude that the elaborate speed control system must be the reason. On a cold winters day what else could I do - I bought another one from Screwfix - Excellent price and in stock - LIFE SAVERS!
Grundfos however unable to help with spares or repairs - what a waste to throw away a perfectly good pump just because a chip somewhere has failed. Maybe this pump is just too complicated? I am now on the lookout for a hot spare to keep on the self as I have little trust in the new one given that there was absolutely no warning before its predecessors failure.
26 Mar 2015
Central heating pump
Old pump getting noisy & 'pulsing'. New one delivered within a day and fitted in a few minutes.
Runs very quietly and house now warm again.
20 Mar 2015