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vaillant aurotherm - Using Heating

 
Air Source Heat Pumps (ASHPs)
Last Post by Batpred 4 minutes ago
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trebor12345
 trebor12345
(@trebor12345)
Reputable Member Member
Joined: 3 years ago
Posts: 198
Topic starter 04/09/2026 11:12 am   [#3152]

Just noticed this.  My vaillant aurotherm is using heating when there is no heating on (just had DHW on) .  Any thoughts on why this is?

Screenshot 2026 09 04 at 11.06.11

2024 build bungalow, Southern England, 179 m2, 14w/m2
Underfloor heating, fully open
Vaillant aroTHERM plus 3.5kW
50 litre volumiser
3.6KW solar panels
Tesla 13.5kw Powerwall


   
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Batpred
 Batpred
(@batpred)
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Joined: 2 years ago
Posts: 1125
04/09/2026 11:54 am  

No idea, mine reports the same, in fact with almost the same figures.. Looking at the detail, I see that most days in Aug it used 100-200w for heating, about 2% of our overall consumption.  

Not sure if worth raising to their app team. It could be some sort of regular heatpump maintenance cycle.  

I am very impressed with the stats the Vaillant app provides, all energy use and SCOPs calculated, broken down in whatever way you may want. 


8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kW export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; Vaillant Arotherm Pro 7kW; 100Amp head, HA lab on mini PC


   
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