[Sticky] Air source heat pump roll call – what heat pump brand and model do you have?
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.
Save energy... recycle electrons!
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.
@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.
- 26 Forums
- 2,323 Topics
- 52.1 K Posts
- 373 Online
- 5,979 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Replacing my 18 month old Hitachi Yutaki ASHP
@jamespa I’ve re read through the instructions a I can’...
By Sim0n0 , 29 minutes ago
-
RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
@majordennisbloodnok Thanks. Yes, no problem. Wher...
By Bash , 48 minutes ago
-
RE: Testing new controls/monitoring for Midea Clone ASHP
Here's what mine typically looks like. Hence why I ...
By benson , 56 minutes ago
-
RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
@hcas Hello Henri, I know that we have had an exchange ...
By DavidAlgarve , 1 hour ago
-
RE: MELcloud scheduling misbehaviour
@downfield my understanding is that you can have a maxi...
By Richard24738 , 3 hours ago
-
RE: Why Millions of UK Homes Struggle With Heat Pumps
If it is combined with the BUS and they make it all goo...
By Batpred , 4 hours ago
-
RE: Electricity price predictions
Before I dive into the issue of a strategy which helps ...
By Transparent , 6 hours ago
-
RE: Advice on reading thermal images
@editor Thanks Mars, better price from the website and ...
By colinc , 9 hours ago
-
RE: Signenergy AI Mode - How long does it take to learn a usage pattern?
@editor apparently it helps optimise charging and disch...
By Grantmethestrength , 9 hours ago
-
RE: A2A vs A2W: Which Heat Pump Would You Pick?
To be blunt, I wouldn't choose. If we were to move to...
By Majordennisbloodnok , 10 hours ago
-
RE: Diagnostic Data Needed for Repeatedly Failing Tesla Powerwall 3 System
Yes, some queries were raised on github recently: ...
By Batpred , 10 hours ago
-
RE: Share Your Experiences with Heat Pump Manufacturer Support
@cold123456 Mitsubishi has failed to respond to my com...
By Ecoste , 11 hours ago
-
RE: Grant Aerona Short Cycling
@steam-powered I'm currently running 30@-7 23@15 so cur...
By damonc , 14 hours ago
-
RE: What a Bad Heat Pump Installation Looks Like
That's pretty impressively incompetent. In our develo...
By Steelbadger , 22 hours ago
-
RE: Marginal pricing and UK electricity costs
@judith I just realised he’s the guy with the ‘minimum ...
By Lucia , 23 hours ago
-
Midea ASHP Issues with Smart Home App losing connectivity with the Wall Unit
Hi, First Post - replaced out 16 year old gas boiler ...
By SteveT , 23 hours ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: @lucia Manufacturer: Daikin Model: E...
By Lucia , 1 day ago
-
RE: Heat Pump Training vs. Real-World Installation
@judith I looked at the control challenge of balancin...
By Lucia , 1 day ago
-
RE: Grant Aerona circulation/system pump staying on
@mikefl thank you, I've changed 4200 to 2 and now the m...
By damonc , 1 day ago



