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Last seen: Oct 1, 2025
@derek-m The cheapest and best heat energy storage is a thick concrete slab with a well designed low temperature under floor heating system
@benseb the Delta T should be between 5 and 10 Deg C. Try reduce the speed on one of the circulating pumps. This will increase the Delta T and further...
Mars, I think you are very optimistic and have significantly overstated the number of well designed systems. From the amount of systems that we sort o...
@transparent You seam to have a system with a lot of potential. With a few alterations, it will improve conciderably and reduce your running costs. Yo...
Difficult to derimine your problem but with the COP figgures you have mentioned, you have some serious problems, and unfortunatly you seam to have a v...
@derek-m A thermostat is a device that controlls atemperature, it cancachieve this in many different forms. On-Off is the most basic form and concique...
@derek-m It looks like a standard thermostat and connects to a standard under floor actuator head. Instead of either open or close, as with a standard...
@derek-m I like to keeep things simple and use a Pulse width modulation thermostat with the heat pumps WC on under floor and the heat pumps load/WC o...
@transparent What heat source do you have? Setting a constant temperature on under floor will do a number of things, Create a very high swing in t...
@alec-morrow We have fantastic results with under floor with any surface when designed and installed correctly, we find weather comprnsation only work...
@alec-morrow You would be correct if the system was designed and installed as in the pictures above, that is a high temperature system, not suitable f...
@robl The kensay units are very simple and I do not believe have an option for cooling, a third party controller will be necessary, which is usually n...
Latest Posts
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RE: Anyone concerned about GivEnergy?
Yes and no. Native controllers generally do a good jo...
By Majordennisbloodnok , 3 hours ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
@temperature_gradient I've had air-to-air for just over...
By Anne Smith , 8 hours ago
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RE: Home automation and the cloud; is there a better way?
+1 It's not just cloud though. Many devices have repla...
By bobflux , 8 hours ago
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RE: End-of-Life Heat Pumps: How Do You Dispose of an ASHP in the UK?
We've started to document everything, and part 2 of the...
By Mars , 14 hours ago
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RE: Summer usage. Why is my Vaillant Aerotherm using so much energy on "heating"?
So the red bars are 'DHW' and the yellow bars 'heating'...
By JamesPa , 15 hours ago
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Its good kit the Midea and significantly cheaper, you w...
By ASHP-BOBBA , 19 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Have you tried cutting the grid feed to see what actual...
By JamesPa , 19 hours ago
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Contractors pack for inta antifreeze valves are around ...
By ASHP-BOBBA , 19 hours ago
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RE: Renewables & Heat Pumps in the News
Critics and naysayers will be negative whatever the gov...
By JamesPa , 19 hours ago
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RE: Microbore heat pump installs
In principle you are almost certainly right, but in pra...
By JamesPa , 1 day ago
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RE: Electricity price predictions
@old_scientist We are a low mileage home, so bulk of ou...
By ChandyKris , 1 day ago
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There are just too many unknowns for me to comment on p...
By Transparent , 1 day ago
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RE: What is the main ‘dictator’ of Agile’s unit price?
@toodles I keep an eye on wholesale prices and energy m...
By ChandyKris , 1 day ago
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RE: Brand and installer questions for ASHP
Strange, perhaps it doesnt use modbus which the third p...
By JamesPa , 1 day ago
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RE: Upgrading my system, how far do I go?
For comparison, my PW3 with 11.04kW inverter, will char...
By Old_Scientist , 2 days ago
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RE: Changes to Tesla Powerwall Charging Regime?
Elon gate - legendary! I take my hat off to you @toodle...
By Old_Scientist , 2 days ago
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RE: Mitsubishi Ecodan not good enough ?
Thanks @goody, appreciate the feedback and sorry you ha...
By marcexec , 2 days ago
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RE: Minimum and Zero Disrupt Heat Pump Installations
True (first sentence) Thats the reason to consider th...
By JamesPa , 3 days ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus
Quite right. I was using a rough guesstimate of doublin...
By Majordennisbloodnok , 3 days ago
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RE: My Grant R290 9kW Heat Pump Installation
Again, really don't know how accurate this is! &nb...
By petch , 3 days ago
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RE: MCS Quality Audit – Has Anyone Had One? Did It Lead to Remediation?
@toodles The whole scheme is a shocking waste of money....
By Papahuhu , 3 days ago
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RE: DIY or Don’t Touch? Solarman Smart Meter Install
Yes, and these guys would probably be my preferred inst...
By Batpred , 3 days ago
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RE: Hot water tank lose heat rapidly on random days
@jamespa Hopefully their reasons are well intended! ...
By Bash , 4 days ago
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RE: Ecoflow UK Support & Info Thread
As mentioned above, we’ve got our full review of the Ec...
By Mars , 4 days ago
