Last seen: Nov 2, 2025
@jeff The cost of an electric motor is pretty insignificant compared with cost of electricity it consumes in its operational lifetime. The cost of ins...
@jamespa I think you are right about a hotel type hot water feed. Hot water seems to return, see the secondary return shown in this section of dia...
@paullacey From the diagrams I assess you have 2 heat pumps plumbed in "tandem" but controlled in "cascade". What the second heat pump can do is the s...
@bontwoody "but after a minute the 3 way valved closed." I might be wrong but could it be a 3 port, 2 way valve with mid-position? Oper...
@grahamf To save wear and tear on the pump why could you not run weather comparison during the winter months only, and fixed temp. for the other month...
@jamespa Surely the problem will be grid undersupply i.e when the wind fails to blow just when you need it to! This is the problem that needs to ...
@jamespa or it might be related to the number of nuclear power stations closed over that time frame? Since 2008, five UK nuclear power stations have...
@jamespa had the closure of coal powered electricity generation had a part to play in general increase? Rapid Decline:Coal's share of the UK's elec...
@toodles, touché chez. /\
A question for Inspector Watson?
@guydeb I take it you've not explored the option of using a single phase to 3 phase converter to run a 18kW 3-phase heat pump. Instead of £44k on a gr...
@ecobaker I'm still thinking that something is triggering the valve to close. In cooling mode on the rad, what are you setting as the rad target tem...
Latest Posts
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RE: Help me keep the faith with my air source heat pump installation
I have only just spotted this post, sorry I missed it e...
By JamesPa , 4 hours ago
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RE: Oil Boiler & Heat Pump Hybrid System
@paultheheating, where in the country are you?
By Mars , 7 hours ago
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RE: British Gas Heat Pump Installation Complaint
@bgno, the other consideration for legionella cycles ar...
By Mars , 7 hours ago
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RE: Electricity price predictions
Remember that almost all submissions to Government Publ...
By Transparent , 10 hours ago
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@old_scientist I dont monitor the tank temperature but ...
By bontwoody , 11 hours ago
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RE: Say hello and introduce yourself
Hello @paultheheating - I'm a rural Moderator! What's...
By Transparent , 11 hours ago
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RE: What valves to replace radbots?
Yes. Radbots just replace TRV heads. TRV heads push t...
By JamesPa , 14 hours ago
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RE: Who has a V2G EV installation
Im looking at Anderson or Simpson and Partners, somethi...
By AgentGeorge , 16 hours ago
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RE: When will fusion be producing energy?
I am thinking of the case where AI was able to distingu...
By Batpred , 1 day ago
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RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
@majordennisbloodnok Thanks for the welcome and yes I...
By Mark Nelson , 1 day ago
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RE: When to use Octopus Intelligent Go tariff with my heat pump and battery
I’ve got 5.4kW array, 9.6kWh battery, 5kW heat pump, EV...
By Gruff2001 , 1 day ago
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RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
Very definitely. I think the market has changed a bit...
By JamesPa , 1 day ago
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RE: Buying large amp bidirectional RCD and RCBO
The following diagram is taken from the Meter Operator'...
By Transparent , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@allyfish It was going so well with month after month s...
By Toodles , 2 days ago
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RE: UFH downstairs and radiators upstairs balancing question
Have you tried turning up the stat and turning down the...
By JamesPa , 2 days ago
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RE: Mediation with RECC, what's your experience?
Welcome to the forums @treewizard and sorry to hear abo...
By Mars , 2 days ago
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RE: New build installation query
That accounts for why you start with an overly-high DHW...
By Transparent , 2 days ago
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RE: Daikin Altherma 3 / HomeAssistant
I would have thought that (instantaneous) power is a fa...
By JamesPa , 2 days ago
