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bobflux
bobflux
@bobflux
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Joined: Feb 22, 2026
Last seen: Oct 11, 2026
Profile Activity
Topics: 2 / Replies: 185
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage

This tool lets you input the makeup of your wall, ceiling, roof, etc, and calculates U/R-values. It can also simulate summer comfort, thermal mass, ...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
DIY powerflushing tutorial
1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 0
Views: 0
Reply
RE: battery storage without solar

Indeed, current on the grid input = current used for charging + current output on backup port... There is another fine print: if the internal relays...

1 week ago
Forum
Energy Storage
Reply
RE: battery storage without solar

Depends on what's in the box. Either it has a charger (AC to DC) and an inverter (DC to AC), or one bidirectional DC/AC converter which is cheaper. ...

1 week ago
Forum
Energy Storage
Reply
RE: Getting closer to a finished Haier system

Very nice! Congratulations. Big MLC looks neat when it's finished, but it is quite uncooperative... gives a good full body workout 🤣 &...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: battery storage without solar

There's an interesting gotcha about that. Suppose the supply is rated to 32A and the consumer unit breakers are connected using a 32A rated copper c...

2 weeks ago
Forum
Energy Storage
Reply
RE: Cooling using an air to water heat pump

The issue with A2A monoblocs is the airflow needs to be quite high, and pushing it through 150-200mm wide ducts requires a powerful fan that makes noi...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Cooling using an air to water heat pump

I've been doing it, 16-17°C water in the slabs. The effect is subtle, ie it is only noticed when it's off, "hey it's hotter than usual here!..." U...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Next steps on my ASHP journey: Radiators and Pipework

If you have a flowmeter and two temperature probes, then you can calculate power, so you have a thermal power meter. Won't accumulate kWh like a real ...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Siting of the external sensor on a heatpump

My heat pump receives sunlight, so when the fan is not blowing, OAT sensor readings are hotter than actual air temp.

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Siting of the external sensor on a heatpump

It's pretty much always a thermistor. It has to be installed with standard electrical cable, usually two wires... nothing fancy, thermistor has no p...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Next steps on my ASHP journey: Radiators and Pipework

I don't understand either. But you can find out which pipe feeds which radiator by closing them all except one. The pipe with water circulating will...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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