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Last seen: May 17, 2026
@swwils there is no logic to oversizing a heat pump. It wastes energy keeping a large compressor and heat exchanger running. you got the 9kW cosy as...
@andrewj i refused a daikin 8kW as it was over powered for the heat loss calcs I did their calcs were 20% higher until I challenged them to redo the...
@chandykris ive mentioned previously i researched heat pumps for over a year, reading mars’ forum extensively. I learnt R290 was the new gas, which id...
@chandykris In the winter period, i boost the temp during the 8 cosy hours by 0.5C, and the 4-7p period drop it by 0.5C This gave me 85%+ usage o...
@andrewj got an astounding COP over 6 today Has Octopus changed something on my Cosy6
@harrisonc sound meter App is available for iphone, I have one called NIOSH SLM
Maybe you can email Greg and ask him to come on a pod cast of yours and talk about Hush Mode and if it’s available for Cosy6,9,12 He's always doing ...
@jamespa having a battery the day rate tariff becomes the nighttime one I'm currently at 98% usage at night time rate with a 5kW battery. I looked a...
@majordennisbloodnok i was ferkling in the growatt App as i recalled i altered the inverter time differently last change, and eventually found the ...
I have a Cosy6, it draws 1.6kWh on DHW cycle, your Ecodan is taking allot of power, using your figures its COP 2 I trialled DHW cycle during my cosy...
had an interesting day, i exported more than the PV was generating, and not from the battery which is snoozing for the sumner &nbs...
@majordennisbloodnok i dont, i was looking at doing it, but im in middle of renovations and need to build the new staircase and batton snd insulate al...
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Degrees of Separation
Latest Posts
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RE: GivEnergy inverter tripping due to over-voltage?
Isn't it ironic that the system we use to retrieve sola...
By Transparent , 11 minutes ago
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RE: Indevolt Batteries UK Support & Info Thread
Hi Mars,I saw your review of the Powerflex-2000 on YouT...
By Hanno , 21 minutes ago
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I share the same experience as @majordennisbloodnok hav...
By Old_Scientist , 33 minutes ago
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RE: Several AC coupled batteries
Ready-built LiFePOâ‚„ batteries are also readily availabl...
By Transparent , 1 hour ago
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I agree. So far as I understand, we can't necessarily...
By Majordennisbloodnok , 1 hour ago
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Did you try using the find an installer tool in the sit...
By Batpred , 2 hours ago
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RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
By Majordennisbloodnok , 3 hours ago
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Looking for some advice - planning a self build - but a...
By chastity_outward053@simplelogi , 5 hours ago
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RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@jamespa many thanks, definitely i will give the pre...
By ragtime27 , 15 hours ago
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RE: Heat pump installation quotations
@jamespa I noticed that in the Heat Geek design consult...
By Batpred , 16 hours ago
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RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 1 day ago
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RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
By Majordennisbloodnok , 1 day ago
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RE: Help me keep the faith with my air source heat pump installation
@jamespa these:
By AdamK , 1 day ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Vaillant arotherm plus 12kW. Installed March 2025. Ex...
By Harebell , 2 days ago
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