I want to replace the three 11 year old Grundfos UPS 15-60 130 pumps as a part of trying to reduce the electricity consumption of my heating/DHW system. The pumps circulate the water in i) the UFH, ii) the first floor rads and iii) the mains pressure DHW cylinder primary circuit. The Grundfos website suggests the UPS3 15-50/65 130 as the replacement with the ALPHA1 15-50/60 130 as an 'advanced' replacement. I've spoken with Grundfos Tech Support but didn't get an answer to my questions - 'what the difference between the two and given the higher price of the Alpha range what performance benefits can I expect given the intended use'?
Can anyone answer the questions please?
I understand that the Alpha 1 may have been replaced by the Alpha 3.
Many thanks
Martin
Can anyone answer the questions please?
I understand that the Alpha 1 may have been replaced by the Alpha 3.
Many thanks
Martin