Forum Handle: Judith
Manufacturer: Vaillant
Model: Aro THERM Plus 7kW (achieves 8.3kW)
Type: ASHP
Arrangement: Mono
Area of Country: South Coast
Home Type: House 1950s detached
Size: Square Metres: 198m^2
Insulation Level: 7/10 300mm in loft, cavity wall beads or foam, Ar filled double glazing, BUT solid concrete floor in original house
Heat Loss Calculation: 7.5 kW by installer @ Amb. Temp, of:20.5 @-2C OR 6.5kW to 7kW using bills/smart meter and 6.5kW my calculations
Type of Controller: Vaillant Sensocomfort 720 TRV's on all old, but not on replacement, rads.
Type of Control: Weather Compensation (in expanded mode at present to prevent over-heating with solar load with large south facing windows)
System Type: Mostly Radiators, single zone 42C water flow temperature at external design temperature
Total Output of Heat Emitters: ~30kW at delta 50C
Buffer Tank or Low Loss Header: 26L Volumiser, on heating output side
Secondary Pumps: one post mixer for UFH in extension which needs an always lower temperature for floor covering
Solar PV System: 6kW 4kW with SunnyBoy Inverter (original FIT tariff) + 2kW on Growatt 2kW inverter
Power Diverter: No
Solar thermal system for DHW vacuum type
Battery System: Yes 9/5kWH Givenergy with AC 3 inverter
Household ventilation by MVHR. Baseline air leakage <1 ACH
Wood burner stove <5kW output
Needed planning permission (straight-forward) since pump mounted on side wall at the front can be seen from the road

Forum Handle: MikeH

Manufacturer: Aira

Model:Aira 8kW

Type: ASHP,

Arrangement: Mono,

Area of Country: Nottingham

Home Type: Dethatched House (1899),

Size: Square Metres: 112

Insulation Level: 6 (half externally insulated, double glassed, 300mm loft)

Heat Loss Calculation: 8.6kW @ Amb. Temp, of: -3.2C

Type of Controller: Aira wireless remote controller

Type of Control: Unknown, assume Weather Compensation,

System Type: Radiators (5 upgraded)

Total Output of Heat Emitters: unknown

Buffer Tank or Low Loss Header: 40l Buffer Tank

Secondary Pumps: 1

Solar PV System: 3.8kW

Power Diverter: No

Battery System: No

Forum Handle: ArundaleP

Manufacturer: Samsung

Model: AE080BXYDEG/EU (8kW HTQ)

Type: ASHP 

Arrangement: Mono, High Temp capable.

Area of Country: Sussex 

Home Type: House

Size: Square Metres: 101

Insulation Level: 6/10 (uninsulated concrete floor, 300mm in loft, insulated cavity walls, old UPVC double glazing)

Heat Loss Calculation: 6 kW @ Amb. Temp, of: -1.9C

Type of Controller: Homely

Type of Control: Adaptive, Weather Compensation, Flow Temperature, Room Influence, tariff optimised.

Tado set to all open but limits bedroom temps at night.

System Type: Radiators 

Total Output of Heat Emitters: kW

Buffer Tank or Low Loss Header: No

Secondary Pumps: No

Solar PV System: 5.9kW

Power Diverter: No

Battery System: 9.7kWh

We also have a Nissan Leaf and vehicle to grid charger which is used to extend the use of off peak electricity in the winter evenings (vehicle to heat pump).

A lot of home automation is used to make all the systems work together efficiently.

Forum Handle: pj_preston

Manufacturer: Daikin

Model: Altherma 3 9kw EDLA09DA3V3

Type: ASHP

Arrangement: Monobloc

Area of Country: Location Preston. North West England

Home Type: Detached 3 Bedroom Bungalow

Size: Square Metres: Original 80 sq m, Extended 32 sq m Total 112 sq m

Insulation Level: Original 6, Extended 8

Heat Loss Calculation: 6.827kW @ -3.2C

Type of Controller: Daikin Weather Dependant with Leaving Water Temperature Control. TRV’s and 2 zone UFH. Madoka is installed in central hall and MMI in services cupboard.

Type of Control: Weather Compensation and LWT Weather Dependant

System Type: Radiators for 80 sq mtrs and UFH for 32 sq mtrs

Total Output of Heat Emitters: 8.923kW

Buffer Tank or Low Loss Header: Volumiser installed in loft area

Secondary Pumps: Number or No No.

Solar PV System: Size or No No.

Power Diverter: Yes or No No.

Battery System: Size or No No.

Forum Handle: jamespetts

Manufacturer: Vaillant

Model: Arotherm + 7kW

Type: ASHP

Arrangement: Monobloc

Area of Country: London

Home Type: 2 bed mid-terrace

Size: Square Metres:67.15

Insulation Level: ?

Heat Loss Calculation: 6.4kW @ -1.8C

Type of Controller: Vaillant sensoCOMFORT VRC 720f/3 + Honeywell EvoHome for TRVs

Type of Control: Weather Compensation + (independent) Honeywell TRVs

System Type: Cast iron radiators

Total Output of Heat Emitters: 8..898kW

Buffer Tank or Low Loss Header: Low loss header

Secondary Pumps: One

Solar PV System: 8kW peak

Power Diverter: No

Battery System: Not yet but possibly in future

Manufacturer: Grant

Model: Aerona 3 - 6kw

Type: ASHP

Area of Country: Ireland, Cork

Home Type: House detached 

Size: Square Metres: 182

Insulation Level: 8/9

Heat Loss Calculation: Unknown

Type of Controller: Grant standard controller, 2 zone stats

Type of   Control : Weather compensation 

System Type: UFH up and downstairs 

Total Output of Heat Emitters: unknown

Buffer Tank or Low Loss Header: BT

Secondary Pumps: No

Solar PV System: no

Power Diverter: No

Battery System: No

Manufacturer: Octopus

Model: Cosy6

Type: ASHP

Arrangement: Mono

Area of Country: SE

Home Type: House - semi-detached

Size: Square Metres: 75

Insulation Level: EPC B (after ASHP and Solar PV)

Heat Loss Calculation: 4.1kW @ Amb. Temp, of: -2.4C

Type of Controller: Cosy Hub

Type of Control: Weather compensating

System Type: Radiators (with 10mm PEX microbore) 

Total Output of Heat Emitters: 4.6kW @ dT30

Buffer Tank or Low Loss Header: 26L volumizer on the CH return

Secondary Pumps: none

Solar PV System: 2.64kWp azimuth 145 tilt 40 with Enphase microinverters

Power Diverter: none

Battery System: 2 x Enphase IQ5p (5kWh, 3.2kW AC)

I really don't have a lot of this information, but I'll fill what I can:

Forum Handle: eqwilts

Manufacturer: LG

Model: HM091MR

Type: ASHP

Arrangement: Mono

Area of Country: North Wiltshire

Home Type: House

Size: Square Metres: 65

Insulation Level: Scale of 1 to 10 possibly? Don't know how to calculate that, loft insulation, double glazing, cavity wall insulation

Heat Loss Calculation: kW @ Amb. Temp, of: ?C

Type of Controller: Smart Single Thermostat, dumb trvs

Type of Control: Adaptive, Weather Compensation, Flow Temperature, Room Temperature etc.

System Type:  Radiators

Total Output of Heat Emitters: kW

Buffer Tank or Low Loss Header:  No info supplied

Secondary Pumps: No info supplied

Solar PV System: 3.2kw

Power Diverter: ?

Battery System: 2 x 3kw

Mitsubishi Zubadan 14kW with Mixergy 210l DHW

@downfield  May I point you in the direction of this topic about the anti-legionella system used by heat-pumps to prevent the growth of bacteria in the DHW tank...

... and then this topic which discusses possible software deficiencies in the anti-legionella cycle implemented by Mitsubishi heat-pumps.

In particular, your 210-litre DHW tank is borderline for whether a 3kW immersion heater can actually raise the water temperature sufficiently high during the 60-min window in which it operates.
The quality of the pipe insulation around the tank needs to be high.

Please make responses in those topics, rather than here.

Ecodan PUZ-WM85VAA
1.7 slimline 

Stelrad Softline Compact range.

@westkent 

Forum Handle: adrian 

Manufacturer: Vaillant 

Model: Arotherm plus 5

Type: ASHP

Arrangement: Mono

Area of Country: Oxfordshire 

Home Type: semi detached house

Size: Square Metres: 100

Insulation Level: 8

Heat Loss Calculation: 4kW @ Amb. Temp, of: -2C

Type of Controller: Vaillant thing

Type of Control:, Weather Compensation .

System Type: Radiators

Total Output of Heat Emitters: 4.5kW @45C

Buffer Tank or Low Loss Header: No

Secondary Pumps: no

Solar PV System: 4.3kwp

Power Diverter: No

Battery System: 9.5kwh