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[Sticky] Air source heat pump roll call – what heat pump brand and model do you have?

 
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Air Source Heat Pumps (ASHPs)
Last Post by Lucia 3 weeks ago
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 Scalextrix
(@scalextrix)
Reputable Member Member
Joined: 1 year ago
Posts: 120
02/10/2025 9:03 am  

Forum Handle: @scalextrix

Manufacturer: Vaillant 

Model: Arotherm Plus 7kW

Type: ASHP

Arrangement: Mono

Area of Country: Essex

Home Type: House 

Size: Square Metres: 120

Insulation Level: 6-7, EPC B

Heat Loss Calculation: 5.7kW @ Amb. Temp, of: -2C

Type of Controller: Single zone thermostat, TRVs for bedrooms 

Type of Control: Weather Compensation, Load Compensation 

System Type: Radiators, plus Hydronic blower in kitchen 

Total Output of Heat Emitters: 7kW

Buffer Tank or Low Loss Header: No

Secondary Pumps: 1, fitted to secondary vented central heating system using plate heat exchanger 

Solar PV System: 3.95kWp

Power Diverter: Solar iBoost immersion controller 

Battery System: No

 

Glad to be in the HP club 💪



   
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Steelbadger
 Steelbadger
(@steelbadger)
Trusted Member Member
Joined: 3 months ago
Posts: 24
02/10/2025 9:55 am  

Manufacturer: Worcester Bosch, Earth Save Products

Model: Bosch CS5800i, Ecocent 300L

Type: ASHP

Arrangement: Monobloc (5800i) + Exhaust Air Hot Water Heat Pump Tank (Ecocent)

Area of Country: Lothians, Scotland

Home Type: Ground-floor Flat

Size: 125m²

Insulation Level: 9 (High spec new build, not Passivhaus)

Heat Loss Calculation: ~2.4kW at -3.4C

Type of Controller: Modulating, open loop only, single central room stat.

Type of Control: Weather Compensation

System Type: UFH

Total Output of Heat Emitters: 3.3kW

Buffer Tank or Low Loss Header: No

Secondary Pumps: No

Solar PV System: No

Power Diverter: No

Battery System: No



   
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 KenBone
(@kenbone)
Estimable Member Member
Joined: 2 years ago
Posts: 49
02/10/2025 9:16 pm  

Old Samsung R410a unit 9kw, modbused controlled, let Havenwise have a play now and again.



   
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 Darrell P
(@darrell-p)
New Member Member
Joined: 3 months ago
Posts: 1
07/10/2025 11:14 am  

Panasonic Model WH-WDG05LES 5KW

Thermino ePlus 210 Litre

6.3 Solar array

GivEnergy 9.5 battery 



   
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Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
Joined: 4 years ago
Posts: 2819
07/10/2025 11:27 am  

@darrell-p There's another new Forum Member, @wully who also has a Thermino, together with a ZEB(!)

He started a Topic on Heat Batteries here, which you might like to read.


Save energy... recycle electrons!


   
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DREI
 DREI
(@drei)
Estimable Member Contributor
Joined: 4 months ago
Posts: 77
14/10/2025 12:46 pm  

12kW Gen 6 AE120BXYDEG (currently NOT performing well and in process of initiating remedial work)



   
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 Andy-e
(@andy-e)
New Member Member
Joined: 2 months ago
Posts: 2
16/10/2025 9:51 am  

Manufacturer: Panasonic

Model: WH-WXG12ME8

Type: ASHP

Arrangement: Mono

Area of Country: Cambridge

Home Type: Terrace House

Size: Square Metres:225

Insulation Level: 7

Heat Loss Calculation: 10kW @ Amb. Temp, of: -2C

Type of Controller: Open loop design with Panasonic controller as upper limiter 

Type of Control: Weather Compensation

System Type: Radiators

Total Output of Heat Emitters: 10kW

Buffer Tank or Low Loss Header: No

Secondary Pumps: Number or No

Solar PV System: Size or No

Power Diverter: Yes or No

Battery System: Size or No

Design flow Temperature 45c 



   
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 RadWhisperer
(@radwhisperer)
Trusted Member Member
Joined: 2 months ago
Posts: 29
19/10/2025 6:36 am  

Daikin Altherma 3M - 4kW (R32 2022 Release) (EDLA04E2V3)

 

Installed by Octopus April 2025.


This post was modified 2 months ago by RadWhisperer

   
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 MDG
(@mdg)
New Member Member
Joined: 2 years ago
Posts: 1
20/10/2025 12:45 pm  

Grant Aerona 3 10 HPID10R32


This post was modified 2 months ago by MDG

   
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 Ecoste
(@ecoste)
Trusted Member Member
Joined: 2 months ago
Posts: 25
27/10/2025 3:35 pm  

Mitsubishi Ecodan R290 10kW



   
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 Walnut-tree-cottage
(@walnut-tree-cottage)
Active Member Member
Joined: 2 months ago
Posts: 6
27/10/2025 4:50 pm  

Vaillant arotherm 5kw. 

1 month in

Getting to grips with it.



   
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 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 3734
27/10/2025 5:06 pm  

@ecoste, @walnut-tree-cottage these are both great pieces of kit.

As I am sure you know running a heat pump is rather different to running a boiler.  Whereas with boilers we tend to have TRVs switching radiators on and off, and thermostats switching the boiler on/off, with heat pumps its generally best, both for cost and comfort, to leave radiators and the pump itself on all the time just ticking away at a low temperature. 

If you havent already can I suggest you read this introductory article which should help you understand how to get the best out of it.  Please feel free to start a thread and post questions if you are unsure.


4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
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