Last seen: Aug 4, 2025
@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...
@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. ...
@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...
@alfapat PM me and I can help, you will just neeed to find a standard plumber, not a specilaised one.
@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...
@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 ...
@heatgeek 👍
@heatgeek No offense taken or inferred. The problem is, no-one actually knows but many claim to, and are disseminating unverified information as fact....
@heatgeek You state "Beware disinformation on this forum", then you state "The theoretical power level was calculated " and finally "Vaillant Arotherm...
@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...
@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...
@sunandair a red herring, cycling is not the problen some make it out to be.
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RE: Is a Valliant Inline 6kW heater a BUS buster?
@guydeb The guidelines are possibly written to be defin...
By Toodles , 39 minutes ago
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
Yes Octopus only have the £9 a month service plan for t...
By NJT , 41 minutes ago
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RE: Who’s Caved and Switched the Heating On Already?
@allyfish Dogs have owners - Cats keep staff. You are o...
By Toodles , 60 minutes ago
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RE: What crazy nonsense are inverter limits and why are they imposed?
A week later, I'm finally picking up this comment... ...
By Transparent , 1 hour ago
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RE: COP is not the only measure of efficiency
We keep all our TRVs fully open using the whole house a...
By Old_Scientist , 7 hours ago
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RE: Midea ASHP – how to set weather compensation
I think it is a bug in the code, it comes on even when ...
By cathodeRay , 21 hours ago
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
I am pleased to say at 4pm today we have added another ...
By ASHP-BOBBA , 23 hours ago
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RE: Buffers, hot water and cooling
@jamespa Your reasonably close! Especially with warmer ...
By dgclimatecontrol , 1 day ago
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RE: Renewables & Heat Pumps in the News
To unpack this a little.... 1) how many of us in this...
By Lucia , 1 day ago
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RE: Vaillant aroTherm Plus 10kW thoughts?
@realevil the fans and fan speed / coil size (height, w...
By ASHP-BOBBA , 2 days ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan this can just be done by your sepecilist when t...
By ASHP-BOBBA , 2 days ago
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RE: Anyone still weathering it out with Agile?
@toodles I guess it all comes down to import averages. ...
By Tim441 , 2 days ago
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RE: 300 Liter Tank - Do I have to heat it all?
The size of DHW tank affects the anti-legionella cycle....
By Transparent , 2 days ago
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
By HCas , 2 days ago
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RE: Solar Thermal DHW and ASHP
I was originally contemplating a solar thermal installa...
By jamespetts , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
My system installed in July 2024 has produced 6.4mWh in...
By jamespetts , 2 days ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
By GrahamF , 3 days ago
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RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 3 days ago
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RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 3 days ago