Last seen: Apr 24, 2025
@bontwoody A lot of the reason the u value doesn’t scale with 1/wall thickness is because in-situ insulation also includes air boundary layers. Tha...
We have a small gshp, and in very cold weather the glycol out can be 0C, sometimes even -6C by the end of winter in a cold snap. Our rads run at 32C ...
I’d recommend getting a smart meter, and asking for daily or finer data. The highest daily gas use in kWh, divided by 24, will be the smallest heatpu...
I have an ohme commando plug charger, and I remember the test charge was a hassle with IO go. The smets 1 smart meter we have was stated as an issue ...
150W average overnight - in order that’ll be: fridgefreezer, mvhr, ftth router, water softener, loads of standby stuff. There’s no standby stuff tha...
We’re all elec too, and on a 100A single phase fuse. I haven’t considered changing it to 3phase - it would be simple though to fit even more PV ...
I made supports out of recycled plastic lumber, aluminium, and stainless screws for our flat epdm garage roof. The lumber is 40x40x3000mm from ‘filcr...
Our hybrid inverter is a sunsynk, and while it states the SOC monitored by the (Seplos mason) battery I’m pretty sure it uses its own voltage measurem...
‘Natural’ gas energy content is usually given at the Lower Heating Value (LHV). This value is not the total chemical energy, but assumes all water cr...
The choice of refrigerant is always a compromise. So far as I'm aware, they are generally: Poisonous / High GWP / ozone depleting / flammable / sup...
Compared to having ‘natural’ gas piped continuously into a home -a permanent gas source, the tiny amount of r290 kept safely in a heatpump for many ma...
I wanted to put our r290 gshp near a kitchen drain. And found to my dismay that it didn’t have a trap! Bit of a faff, but managed to swap it out for...
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Latest Posts
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RE: Is Your 6kW Air Source Heat Pump Really a 6kW?
Sounds like your 6kW unit is really just an 8kW with a ...
By logansmith01 , 16 hours ago
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide
Good luck, I hope it all works out!
By JamesPa , 17 hours ago
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@johnd it's a difficult one, because we've seen instanc...
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RE: IVT Greenline high pressure switch and electrical cassette errors
Here are the reported most common causes for both. Co...
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RE: Is your heat pump insured?
@johnmo sorry it comes across like that. The post is au...
By KevinPotts , 20 hours ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?
@johnmo Perhaps a little detail might explain my reason...
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Win a 6-panel PV courtesy of egg and Renewable Heating Hub
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RE: Yes, the "zoning with ASHP" topic again...
James, thanks again for your thoughtful and persistent ...
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RE: Is this normal? Click of the DHW returning to space heating
So the Lone Ranger returned today! Even though we thoro...
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RE: Vaillant & OVO partner up to offer Heat Pump Plus
Hopefully iv done the right thing today by signing up t...
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RE: Battery sizing - How low can you go!
My own experience with connecting four batteries to thr...
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RE: Plate heat exchanger considerations
Work on 2-3 percent per degree. This is a reasonable e...
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RE: Advice for ground source heat pump in new build with PV and batteries
The useful bit is the bit that specifies the heat loss ...
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
You’re absolutely right that during defrost the refrige...
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@editor thanks Mars that’s the same table I found in th...
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RE: Tariff and charging strategy advice please
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RE: Solar Power Output – Let’s Compare Generation Figures
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RE: why solar diverters for HW instead of the heat pump?
For me there are few factors why you may want to heat w...
By Johnmo , 3 days ago
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RE: Hydronic plinth heaters and ASHPs
@editor yes I think so. It will be a while until I get ...
By benson , 3 days ago