
Last seen: Jun 3, 2025
I was chatting to a Vaillant engineer last week. He reckoned that about half of his heat pump call outs were due to poor design/ installation. And tha...
@jamespa Thanks James. I’ve requested a call out from Vaillant, via my installer, and provided a recording of the sound and meter reading. I also have...
@gary This was at -1.1 so not a particularly taxing operating temperature. The pump was also heating the house at the time, not defrosting or heating ...
Appreciate this is an old post but I’m experiencing the same thing in the current cold snap. At freezing temperatures, my Arotherm Plus 7KW unit makes...
Good morning everyone, I’m really pleased to have discovered renewableheatinghub and have already bought a copy of the Bodge Buster guide 🙂 I’m in t...
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Latest Posts
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
I paid around £300 to my Mitsi installer last September...
By downfield , 18 minutes ago
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RE: What crazy nonsense are inverter limits and why are they imposed?
I couldn't agree more with this. Whilst I still have a...
By JamesPa , 1 hour ago
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RE: Who’s Caved and Switched the Heating On Already?
Central heating still switched off and will be until Oc...
By AllyFish , 2 hours ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Please read to the very end of this post, I shift my po...
By JamesPa , 2 hours 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 , 3 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 , 17 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 , 18 hours ago
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RE: Buffers, hot water and cooling
@jamespa Your reasonably close! Especially with warmer ...
By dgclimatecontrol , 20 hours 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