Discuss UFH Pump Question - Do I need it? in the Water Underfloor Heating Advice area at Plumbers Forums

We have a three zone heating system plus water cylinder (OSO Super S 250L) on an Valliant EcoTec 637. Two CH zones and a UFH zone. Boiler is rarely at maximum power rating, even at full tilt.

The UFH zone has it's own pump and the other two zones (three storey house) are just pumped from the Valliant.

Question: Do I really need the UFH pump?

Reason I ask is that its broken - there is a minor leak on it, but also the electric smart meter says its significantly more than the wattage of the boiler when it's on.
Depends on what type of manifold you have eg if it’s an injector type then yes and you will need to work out the head loss on the ufh to see if the boiler pump has the spare head after the loss of the hex

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