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robl
@robl
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Reputable Member
Joined: Mar 23, 2022
Last seen: Mar 1, 2026
Profile Activity
Topics: 1 / Replies: 213
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Reply
RE: Excessive performance/system issues with GSHP

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 ...

1 year ago
Forum
Ground Source Heat Pump (GSHPs)
Reply
RE: Simulation of ASHP with Gas boiler as part of decision process

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...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Intelligent Go Test Charge

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 ...

2 years ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Is mine bigger than yours? Ambient level of consumption.

150W average overnight - in order that’ll be: fridgefreezer, mvhr, ftth router, water softener, loads of standby stuff. There’s no standby stuff tha...

2 years ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Single vs. three phase for heat pump, EV and appliances

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 ...

2 years ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: DIY solar upgrade - Considering adding more panels

I made supports out of recycled plastic lumber, aluminium, and stainless screws for our flat epdm garage roof. The lumber is 40x40x3000mm from ‘filcr...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: New Fogstar 15.5kWh upright solution

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...

2 years ago
Forum
Energy Storage
Reply
RE: Comparing & Evaluating the Efficiency of Gas Heating vs. ASHP Powered by Gas-Fired Electricity

‘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...

2 years ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Placement of Samsung R290 ASHP

The choice of refrigerant is always a compromise. So far as I'm aware, they are generally: Poisonous / High GWP / ozone depleting / flammable / sup...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Placement of Samsung R290 ASHP

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...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Placement of Samsung R290 ASHP

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...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Fogstar 15.5kWh upright solution

@ggw When the sunsynk is used in lithium % mode, it also still makes use of the basic voltage figures from the lead acid mode - these must be set corr...

2 years ago
Forum
Energy Storage
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