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@heacol
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Noble Member
Joined: Aug 6, 2021
Last seen: Jul 27, 2025
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Topics: 3 / Replies: 404
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RE: Antifreeze top up for my heat pump - is this a rip off?

@johnmo You are correct, standard Ethylene glycol used in the motor industry is highly toxic, however, the product used for heat pumps is a detoxified...

2 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Antifreeze top up for my heat pump - is this a rip off?

@editor @sallyl As Mars said, there are 2 different types of glycol generally used in the heating system. They are different and should not be mixed. ...

2 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

@jamespa, @heatgeek Talk about laying the gauntlet down. In my view, you are both right depending on the task at hand, the variables and the required...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@alfapat PM me and I can help, you will just neeed to find a standard plumber, not a specilaised one.

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Heat pump's integral circulator pump

@jamespa you are right about the cospiricy of scilence regarding system balancing. There is no industry consensous, I put a post on linked in at the e...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

@robs The flow rate is determined by the capacity of the unit. If you close a valve in the flow, the pump speeds up to try to match the desired fixed ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

@heatgeek 👍

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

@heatgeek No offense taken or inferred. The problem is, no-one actually knows but many claim to, and are disseminating unverified information as fact....

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

@heatgeek You state "Beware disinformation on this forum", then you state "The theoretical power level was calculated " and finally "Vaillant Arotherm...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

@jamespa There is no consensus as manufacturers will not supply their test data, however, it is very much based on the design of the refrigerant circu...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

@jamespa, please do not make assumptions when you admit that you do not understand the topic. There are reasons for the 5 Deg Delta T but they are exc...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: buffer/volumizer cupboard space eater, do i need one?

@sunandair a red herring, cycling is not the problen some make it out to be.

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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