Last seen: Mar 9, 2025
@julianc 190m2 and not done a full year yet on ashp. Annual gas usage ~17,000kWh but efficiency unknown. We’ve used the wood burner a similar number o...
Some of these documents on moisture control
@julianc so far in January we’ve achieved 3.8 energy efficiency. Really pleased but we’ve not not a calibrated heat meter only the Vaillant prediction...
I was looking for the link about what heat could go down each microbore pipe. But I’ve been beaten to it. Your heat loss document should give the loss...
In no particular order some thoughts:- Clivet is a badged Midea and personally I wouldn’t have one given me. Since a Heatgeek trained installer sa...
On your first point @rosst your best best is to start with your installer, the manufacturer and dedicated forums possibly on Facebook for your type, s...
@jamespa ours (without a noise issue) was installed in September. I too recall reading the firmware is in a hardware (not-remote programmable) chip an...
@cathoderay digging into further dirty details are your fully open trvs suitable for bidirectional use or are they your secondary constriction?
@samiebon1 When adjusting lockshields its worth bearing in mind that some have a tiny range over which the adjustment makes any difference. S...
@samiebon1 our DHW gets to 48C with a heating temp of ~55C within ~ 45mins but it’s not usually empty (residual ~35 in bottom third of tank). The la...
@cathoderay &@bobtskutter This is getting interesting! I was convinced from much earlier posts that the early hypothesis of the PHE being inad...
@transparent to give context to my results of slow switch on current. Our Vaillant is inverter controlled, the system is open and the overall system i...
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Heat Pump Dramas?
Thinking about installing a heat pump but unsure where to start? Already have one but it’s not performing as expected? Or are you locked in a frustrating dispute with an installer or manufacturer? We’re here to help.
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Latest Posts
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RE: Newbie out of her depth – Samsung AE120RXYDEG 12kW heat pump
@jamespa cannot find loss calculation. When they get i...
By BAMi , 2 minutes ago
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RE: Towel rails. An unexpected final hurdle
We have both Normal Rad for heating the room and then a...
By IRMartini , 44 minutes ago
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RE: Heat Pump Sizing & Installation Costs
Perhaps useful to have installed date too? To get conte...
By Tim441 , 3 hours ago
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RE: What is the best strategy for operating a very oversized heat pump?
Something else... that works for some people... LG ha...
By Tim441 , 3 hours ago
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RE: Setback savings - fact or fiction?
@cathoderay I see you are continuing to misquote from t...
By SUNandAIR , 4 hours ago
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RE: Samsung Gen 7 R290 12kW is not behaving how I expected
So I turned my thermostats down last night And w...
By Joshua , 5 hours ago
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RE: SolarPV tables / online calculator
I'd be interested what others find whilst using that we...
By Majordennisbloodnok , 5 hours ago
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Volumisers in Heat Pump Systems: Does Placement Matter?
The debate over buffer tanks in heat pump systems has b...
By Mars , 6 hours ago
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RE: F.788 Building circuit pump reports internal fault - Vaillant Arotherm
Guess I have to wait for engineer visit. I really hope ...
By jeegnesh , 17 hours ago
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RE: Act now to defer the UK road tax increase on EVs
@majordennisbloodnok Damn right sir. my attempt at iron...
By Jancold , 20 hours ago
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RE: ASHP and heating issues in new build house
That’s good gives you more capacity. It made me think, ...
By Terry1812 , 21 hours ago
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RE: Seewet manhole cover within r290 exclusion zone
Thanks! I asked Vaillant, and they say I should be fi...
By dbrb2 , 24 hours ago
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Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT
I'm running my Aerona 3 on WC and the 'warm end of that...
By damonc , 1 day ago
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RE: Do I just go with the lowest quote for my heat pump?
So after signing in Sept in two weeks the install may s...
By Jancold , 1 day ago
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RE: Victorian Semi Retrofit / Extension ASHP and UFH Advice
When you are renovating is always a good time, as it ma...
By JamesPa , 1 day ago
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RE: Just one room not reaching desired temperature
Looks like this issue is now resolved. Aira installed a...
By ChandyKris , 1 day ago
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There have been several people on the OpenEnergyMonitor...
By RobS , 2 days ago
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RE: Say hello and introduce yourself
Good point @jamespa But that probably strengthens @ch...
By Transparent , 2 days ago
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RE: Visit a Heat Pump sessions.
Congratulations @toodles, that's a fantastic result. We...
By Old_Scientist , 2 days ago
Latest Topics
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Heat Pump Sizing & Installation Costs
By Mars 5 hours ago
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Volumisers in Heat Pump Systems: Does Placement Matter?
By Mars 6 hours ago
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SolarPV tables / online calculator
By MichelleC 13 hours ago
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By Toodles 2 days ago