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Old_Scientist
@old_scientist
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Joined: Jun 16, 2024
Last seen: Aug 16, 2025
Profile Activity
Topics: 5 / Replies: 198
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Reply
RE: Performance of Heat Pumps in Mild Weather

@heatgeek I have a very over-sized Samsung (12kW gen6, with a heat loss of maybe 4-5kW). We suffer with poor dT which struggles to get above 3C. Are y...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

Yes, that's the default value, but can be set between 10C to 35C.

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

@bontwoody on my gen6 Samsung it's FSV #4013 Heating Off Temp, and by default is set to OAT of 35C (I have reduced mine to 25C). Like @ashp-bobba says...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

I cannot speak for other manufacturers, but I know Samsung's WC 'curves' are very simplistic with just two set points with a straight line between, an...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The gas supply that was!

Not an issue for us as there is no mains gas in our village despite an LNG terminal just down the road and a major 1m diameter gas main for the LNG pa...

5 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Solar Power Output – Let’s Compare Generation Figures

Our March generation was 133% of our PVGIS prediction at 400kWh generated versus 300kWh predicted from our south facing 3.645kWp array. Now winter i...

5 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Help me keep the faith with my air source heat pump installation

As @bontwoody says, if they are inside the heated envelope of the house then it becomes a question of whether it is more beneficial for more of the he...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it worth siting panels on an East facing roof?

Gutted for you. We are waiting to hear on our application to increase our solar array to 7.2kWp and add a Tesla PW3 battery (max 11.04kW export), but ...

5 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Is it worth siting panels on an East facing roof?

General wisdom is to oversize the array slightly, so if your export limit is 5kW (and you have or can add a 5kW inverter), then being able to generate...

5 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Is it KISS or constant – weather compensation vs. set flow temperature?

We ran our radiations at anywhere between 30-35C over winter. At 30C I struggle to tell they are on. If I place my face over the top of the radiator, ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Frequent power outages in the Southeast – A sign of things to come?

No issues here in West Wales, touch wood our supply is very stable. In a situation like that, I'd definitely be looking at a battery solution with ful...

5 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Heat Pump Swap Shop

Over-sized 12kW Samsung gen6 ASHP, low mileage, one careful owner seeks 8kW unit for long term relationship.

5 months ago
Forum
Buy & Sell
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