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 💪

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

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

Panasonic Model WH-WDG05LES 5KW

Thermino ePlus 210 Litre

6.3 Solar array

GivEnergy 9.5 battery 

@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.

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

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 

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

Installed by Octopus April 2025.

Grant Aerona 3 10 HPID10R32

Mitsubishi Ecodan R290 10kW

Vaillant arotherm 5kw. 

1 month in

Getting to grips with it.

@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.