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JamesPa
@jamespa
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Joined: Apr 3, 2023
Last seen: Jul 21, 2025
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Topics: 16 / Replies: 2631
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

Not necessarily, wrongly set up it will make cycling worse (sorry, comment refers to buffer not turning up pump speed) The solution is to replumb as...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

Yes The problem with buffer tanks (unless they have only 2 ports) is that you get mixing between flow and return, unless the pumps either side are ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

Well found. If that's the case and assuming it's 3 or 4 port not 2 port that could account for another 10-15%. Ideally it needs to go but installers...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan - Auto Adapt

Useful. When did it go into shade? If not then, what else was happening at the same time?

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Battery storage to run Heat Pump.

Really, only 10%, thats much smaller than I imagined. Doesn't seem a particularly challenging target to me given the right incentives, which surely a...

4 months ago
Forum
Energy Storage
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RE: Ecodan - Auto Adapt

... but suspicious it correlates with it getting shaded. 11C isnt particularly surprising. Hopefully its white in colour, if it were black it could ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

On other threads people complain about gurgling, which is due to dissolved air coming out of solution during the first couple of weeks. It took nearl...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

A header (or low loss header - LLH) can be identified because flow from HP and flow to emitters and return from emitters and return to HP al...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan - Auto Adapt

Weird that the Mitsubishi engineer says no. My (vaillant) sensor was specifically placed by my installer somewhere in permanent shade, with no chance...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

I thought that but it seems to go to the UFH not the DHW and it should still be warm assuming its from the return, so surely one would insulate it?

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

I have been trying to work that out from the photos. Still not sure, but like you I suspect that there may be one and it might account for a 10%+ eff...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

How odd. Or maybe they have now realised that they are in a competition!

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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