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Scalextrix
@scalextrix
Member
Eminent Member
Joined: Sep 26, 2024
Last seen: Mar 12, 2025
Topics: 2 / Replies: 12
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RE: Should I make my radiators smaller?

@jamespa thanks for the reply, so really in this case we have to reduce the flow to the radiator to achieve it. In my specific case the oversize rad...

1 month ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

The current boiler has a single 22mm pipe, but as you suggest that splits into a 22mm feed for upstairs and a 22mm feed for downstairs. That split oc...

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

Exactly, they said 8kW for us, I need to try and see if that's legit. I think it probably is, but it's getting that emitted into the places we need i...

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

This is exactly why I'm trying to do a real world test simulation. Our 1960s house has construction of different types in different places and it's i...

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

Yeah, this isn't roof or wall insulation, bit hard to explain. Imagine the joists that separate the ground floor ceiling from the upper storey floor, ...

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

Yeah I tried running 24/7 last year and it was very expensive, seemed to use a lot more gas, probably because we have no weather compared, causing sho...

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

It was installed 18 years ago, plumber just used his thumb-ruler, not calculations. Though back then the house had draughts under doors, poor windows...

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

@johnmo understand, but I don't have a heat pump yet or weather compensation, all I can do is hard set flow rate to 50C. If there is a better way to...

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

@cathoderay in fact I think most of our current radiators are oversized for 70C flow. Most of the house was actually acceptable last winter at 50C flo...

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

@johnmo we could but I think they look a bit ugly

7 months ago
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RE: Simulation of ASHP with Gas boiler as part of decision process

We tried the retrofit fans that stick with magnets to the rads a few years ago just for fun. While they were silent before putting on the rad, once t...

7 months ago
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