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Last seen: Apr 8, 2025
There should be a requirement for new build housing to be heat pump ready even if they are sold with gas combi boilers. By "heat pump ready" I mean pr...
One detail that you may want to consider is the warranty on the battery. I recall that the warranty (minimum 70% storage capacity aftre 10 years) for ...
Vaillant's specs indicate an operating pressure between 0.5 and 2.5 bar for the 10kW Arotherm PlusInconsistently, the specs for my 7kW unit say 0.5 to...
Persuading a couple of people to have showers in the evening instead of the morning would reduce the problem. A quick face wash in the morning is quic...
I've got a 7kW Arotherm Plus which is currently using 1133W with a 31C flow temp and -2C outside. This is with a 0.5 heat curve setting and target roo...
If you are in the Algarve (as your forum name suggests) then the daily temperature range isn't very big. Heating the DHW to 50C with an outside temper...
No. COP relates to the efficiency of energy out of the heat pump vs energy in. Flow temperature is a key factor as less work is needed to raise the wa...
This is what I've assumed for my Vaillant heat pump and it's definitely the basis of their efficiency number. However, it's got me thinking. Does all ...
FWIW, the Vaillant app gives the energy efficiency (=COP) as (total heat generated including heat pump energy used)/ energy used. See this screenshot....
I think that legionella is a much bigger risk if the DHW system has an open tank in the loft (as used to be the common practice in British homes) wher...
Shouldn't the headline be My Heat Pump costs 40% more to run than the Gas boiler it replaced The heat pump energy input (kWh, I assume) is only about...
I would agree that knowing the peak daily gas consumption is useful, but not the peak hourly or half hourly as the underlying philosophy for efficient...
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Degrees of Separation
Latest Posts
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 11 minutes ago
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@kilgorexv, I actually think doing your own calculation...
By Mars , 18 minutes ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 14 hours ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 1 day ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 1 day ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 2 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 2 days ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 2 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 5 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 5 days ago
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RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 6 days ago
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