Double heat pump for DHW?
How about this?

“Anything worth doing, is worth doing right.”
Posted by: @ianmk13I would imagine that that the availability of 4-phase ASHPs (compared to their single-phase siblings) may be a relevant consideration
It certainly would @ianmk13
There would appear to be an excess of phases to the tune of +1 🤗
Contrary to what we in UK might imagine, 3-phase heat pumps are plentiful.
The majority of domestic heat pumps being installed in mainland Europe are now three-phase.
Here, we can expect an installer to be specifying a 3-phase ASHP for 11kW and above.
But mainstream manufacturers like Samsung will happily supply a 3-phase 8kW unit if an installer chooses one (Model No. AE080RXYDGGEU)
As for those with storage batteries, there's no reason why an existing battery couldn't have the inverter(s) changed to provide 3-phase.
Although dedicated 3-phase inverters are available,
most 1ph inverters that can operate 'in parallel' are quite capable of being divided across the phases.
My existing Growatt SPF5000ES units offer that functionality,
as do the Sunsynk 5kW ECCO inverters which I will shortly be installing.
Inverters in parallel all use the same common battery, whether they are connected to single or three-phase mains input.
Save energy... recycle electrons!
Posted by: @transparentPosted by: @ianmk13I would imagine that that the availability of 4-phase ASHPs (compared to their single-phase siblings) may be a relevant consideration
It certainly would @ianmk13
There would appear to be an excess of phases to the tune of +1 🤗
Sorry. Fat fingers 🤣
Posted by: @transparentAs for those with storage batteries, there's no reason why an existing battery couldn't have the inverter(s) changed to provide 3-phase
Not so with my GivEnergy All-In-One, unfortunately ☹️
Posted by: @ianmk13Not so with my GivEnergy All-In-One
That's a tricky issue, and one which I expect to see being raised many times this year (2025) as consumers begin to realise what GivEnergy's strategy means for them.
Have a look at what I posted as a synopsis of that strategy here on another topic.
It's a well respected company, and they've taken a hard-nosed decision to concentrate on the new iteration of their All-in-One system.
They will gain a lot of customers in the UK who 'just want a storage battery' and aren't going to spend much time researching the subject.
Most of them will be very satisfied with what they've had installed, and remain largely unaware of its constraints.
Save energy... recycle electrons!
Posted by: @transparentIt's a well respected company, and they've taken a hard-nosed decision to concentrate on the new iteration of their All-in-One system.
Yes, that's another ball-ache coming so soon after my purchase of what will quickly become an obsolete system. In order to expand the storage capacity I will either have to add a further All-In-One, which includes another inverter (which will require DNO approval) or and a totally separate 'conventional' battery and inverter system (again, requiring DNO approval). That said, I will probably need additional inverter capacity for resiliance in any event once I install a heat pump - my present 6kW will be insufficient for 'whole home backup'.
- 26 Forums
- 2,118 Topics
- 46.6 K Posts
- 224 Online
- 4,523 Members
Latest Posts
-
RE: My misgivings about installing ASHP and solar panels via the ECO4 scheme...
I understand. The great thing about ASHPs is that, o...
By JamesPa , 39 seconds ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
I've reduced my debit to £10/month For end July it sh...
By Tim441 , 52 minutes ago
-
@grantmethestrength Sorry! I must try harder then! Tood...
By Toodles , 1 hour ago
-
-
RE: Replacing Refrigerant on Mitsubishi Heat Pump
@davidalgarve It should just be recovered by both servi...
By dgclimatecontrol , 21 hours ago
-
RE: Who's your electricity provider and what's your tariff?
Aggregators have been recognised for many years, and it...
By Transparent , 21 hours ago
-
RE: Help me keep the faith with my air source heat pump installation
Great news I edited my previous post (probably af...
By JamesPa , 1 day ago
-
RE: Double or Triple Glazed Windows?
@toodles Glad to hear things are progressing well for y...
By TRBob , 1 day ago
-
RE: 300 Liter Tank - Do I have to heat it all?
I agree with @morgan. You can turn down the target t...
By JamesPa , 1 day ago
-
How to waste energy (and time) playing with AI.
A friend of mine who subscribes to an AI service was ex...
By Toodles , 2 days ago
-
RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
@topher you’re more than welcome to, yes. I’ll send you...
By Mars , 3 days ago
-
RE: Fitting new shower valve ..........
I’ve never taken a chance when fiddling and changing ou...
By Mars , 3 days ago
-
You should contact the council and report the unsatisfa...
By JamesPa , 3 days ago
-
RE: Benefits of an extra horizontal loop for GSHP
I would deffo install an additional slinky run, especia...
By Transparent , 3 days ago
-
RE: Say hello and introduce yourself
@editor fab - thanks Mars, and keep up the great work o...
By normpang , 3 days ago
-
RE: Compressor and Evaporator Stratification
@trebor12345 So I think the 1st zigzag section shows so...
By ASHP-BOBBA , 4 days ago
-
RE: Is this just haze or something more?
@majordennisbloodnok I was giving a talk to primary sch...
By Toodles , 4 days ago
-
RE: Tesla Powerwall – More of a ‘Luxury’ Than an ROI Winner!
We had our Tesla Powerwall 3 (and Gateway) installed ea...
By Old_Scientist , 4 days ago