Forums

Forums
Renewable Heating
Domestic Hot Water ...
Double heat pump fo...
 
Notifications
Clear all

Double heat pump for DHW?

 
Page 3 / 3
Domestic Hot Water & Cylinders
Last Post by IanMK13 5 months ago
29 Posts
10 Users
6 Reactions
1,688 Views
RSS
 IRMartini
(@irmartini)
Estimable Member Member
Joined: 1 year ago
Posts: 74
28/01/2025 2:48 pm  

How about this?

“Anything worth doing, is worth doing right.”


   
ReplyQuote
Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 2418
Topic starter 28/01/2025 2:55 pm  

Posted by: @ianmk13
↑

I 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.

Off Grid battery4d
This post was modified 5 months ago 2 times by Transparent

Save energy... recycle electrons!


   
ReplyQuote
 IanMK13
(@ianmk13)
Reputable Member Member
Joined: 2 years ago
Posts: 194
28/01/2025 6:51 pm  

Posted by: @transparent
↑

Posted by: @ianmk13
↑

I 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: @transparent
↑

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

Not so with my GivEnergy All-In-One, unfortunately ☹️ 

 

This post was modified 5 months ago by IanMK13

   
ReplyQuote
Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 2418
Topic starter 28/01/2025 7:53 pm  

Posted by: @ianmk13
↑

Not 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!


   
ReplyQuote
 IanMK13
(@ianmk13)
Reputable Member Member
Joined: 2 years ago
Posts: 194
29/01/2025 5:57 pm  

Posted by: @transparent
↑

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.

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'.


   
ReplyQuote
Page 3 / 3
Forum Jump:
  Previous Topic
Next Topic  
Share:

Join Us!

Trusted Installers

Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.

✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available

👉 Find your installer now!

Latest Posts