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Last seen: Oct 15, 2026
OK. If you had two different flow temps and were going for 2 heat pumps, I was about to suggest splitting the installation, one high temp heat pump fo...
Is the flow temperature for the rads and the underfloor heating different?
If the goal is to avoid discharging the battery during cheap electricity times, you could use the Solis scheduler (I think it's called "timed charge")
It's a current output CT (33mA output for 100A input or 1:3000) so it should never be used unloaded. It's the opposite of a battery: a battery is a ...
It depends An unloaded current transformer can output a dangerously high voltage which may cause your switch to arc over, or it can cause arcing ins...
Dehumidifying is a side effect of cooling the air, so pretty much all air conditioning units are also dehumidifiers... It blows air over the evapora...
About the original question: Flow rate for MVHR is adequate for ventilation, but way too low for air conditioning. Heat capacity of air is only 12...
Yeah refrigerants are complicated. They need to have the right characteristics (enthalpy, pressure, temperature at the vapor/liquid transition) and al...
Next winter, if you haven't installed a heat pump, I second James' recommendation: condensing boilers can run at quite low flow temperature, which is ...
- Comfort and silence (for heating) - Heat storage with radiant slabs - Can be maintained, modified, upgraded DIY - All the tech and regulatory ...
Mine only complains if flow is catastrophically low, otherwise it simply works at higher deltaT, up to 10°C or even 20°C, with a corresponding drop in...
+1 #4 Primary pipes too small so not enough flow, but this one is easy to catch
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Latest Posts
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RE: Heat pump branding. Clever, contemporary… or a bit too much?
I think Heat Geek have done an amazing job on their bra...
By Tomtheheatingengineer , 4 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
I have just had 3 heat loss surveys, one by heat geek o...
By David , 4 hours ago
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RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
I think that's the key question. After all inverter uni...
By Prunus , 6 hours ago
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RE: battery storage without solar
As of October 1st they need specific qualifications to ...
By EtchedPixels , 7 hours ago
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RE: How should the Boiler Upgrade Scheme be reformed?
A unit which uses water to transfer the heat/chill from...
By Temperature_Gradient , 7 hours ago
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RE: Renewables & Heat Pumps in the News
With regards to the BUS grant raid, I gave it more thou...
By ASHP-BOBBA , 7 hours ago
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RE: Why are ASHP installs so expensive?
The whole system seems to work on the basis of...
By ian33a , 8 hours ago
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RE: Missing flow temperature in Heat Geek proposal
Good plan. If you can get half hourly meter readings a...
By JamesPa , 13 hours ago
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RE: Heat Pumps Without Grants: Would You Have Installed One & Will You Now?
@editor Most certainly. The heat pump was an ideal s...
By Abernyte , 13 hours ago
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Although regulations may well vary from country to coun...
By Majordennisbloodnok , 14 hours ago
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RE: Does anyone have experience of a smart water meter?
Yep I caught our slow leak from a £100 bill rise 8)
By EtchedPixels , 14 hours ago
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RE: Do You Need a Buffer Tank or Low Loss Header for Underfloor Heating in a Large Property?
@jamespa in some cases, failing the Turing test might b...
By GrahamF , 17 hours ago
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RE: Passiv Smart Thermostat - Help & Forum Support
@energystoragetech The heat capacity of some...
By JamesPa , 19 hours ago
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RE: tepeo ZEB UK Support & Info Thread
Sorry you are correct, I was remembering figures from t...
By JamesPa , 1 day ago
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