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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: Aug 6, 2025
Profile Activity
Topics: 2 / Replies: 371
AllTopicsReplies
Reply
RE: Heat loss calculations and how they work in conjunction with heat pump sizing

Heatpunk is very good and I was able to get an accurate result from thatwhich agreed with the sanity check of the annual gas bill. if you want to do...

11 months ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

I think I have only just understood a point that I think @transparent has made a couple of times. As a direct consequence of there only being one U...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Choice of heat pump - Help needed - Vaillant Arotherm versus Samsung versus Logic Air versus Grant Aerona

We’ve just had a Vaillant installed (literally finished today) and the installer (Heatgeek elite) and Vaillant support has been excellent. So personal...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

A separate reply about ventilation. The heat loss survey method includes heat loss through ventilation both deliberate and unplanned (otherwise know...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

I totally agree with James’ approach of keep the heat pump running continuously during the coldest periods and use set back for overnight lower temper...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How much more can we learn and then use ourselves from @transparent’s systems?

Our battery is connected to the mains via the AC3. The solar also connects to the mains separately which is 4kW of panels with a Sunnyboy “FIT” system...

11 months ago
Forum
Energy Storage
Reply
RE: How much more can we learn and then use ourselves from @transparent’s systems?

Our AC3 gives 3kW output nominal and I’ve never seen more, certainly not up to the 4kW you state our battery can export. Your output power capability ...

11 months ago
Forum
Energy Storage
Reply
RE: How much more can we learn and then use ourselves from @transparent’s systems?

@transparent we have a G99 for our 6kW PV panels and 9.5kWh battery and although we try to use all of our PV we export about 20% of it and it provides...

11 months ago
Forum
Energy Storage
Reply
RE: Is mine bigger than yours? Ambient level of consumption.

Our minimum usage in the night is ~150W but mostly it is more. Usual suspects WiFi mesh and extenders tend to dominate, inc MVHR. When we’re not here ...

11 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Powerwall 3 - is it worth the outlay?

Do we need to challenge personal circumstances on here? Surely not?

11 months ago
Forum
Energy Storage
Reply
RE: Grant Aerona 13KW - can I boost it?

I hope it’s well insulated since with a 3kW immersion outside that could increase your bills a lot. How will it be controlled for how often it comes o...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Determining correct flow rate?

I thought volumisers were in the heating loop and not the dhw? Our ufh floor covering has an absolute maximum temp of 29C for the glue on the tiles ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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