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webcmg
@webcmg
Member
Estimable Member
Joined: Jan 5, 2022
Last seen: Apr 3, 2026
Topics: 4 / Replies: 110
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Finally got a HA install setup. Struggling to add the custom repositories, what url/address did you use?

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin do you know if you can set the legionella cycle to trigger at the same time as the scheduled water charge period?

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@aceshigh I wonder if a control valve and no pump would work? Surely it would simply syphon when the valve opened?

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin that's really not bad at all, I was expecting it to be much higher. Thanks.

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin @derek-m Thanks, our usage is roughly inline with your values so I'm happier now. I definitely want to investigate pv solar and batteries. ...

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@aceshigh @colin I isolated the secondary return at the weekend and today the DHW has not had to recharge following yesterday's anti legionnela cycle....

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@aceshigh thanks, that is helpful to know. Are there likely to be any risks associated with this? @colin I have a small form factor PC on the way to...

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Thanks, will have a go at getting this set up. Hope it works with the installation here.

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin thanks, what are you using to monitor the temp of the tank and produce the graph?

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin one thing I have noticed is that we have a secondary return on the hot water circuit. It has a timer which activates a pump to circulate the wa...

4 years ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Interesting, I'd like to get to the bottom of the efficency because we're seeing high usage for DHW and heating which is why I started this thread. I ...

4 years ago
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RE: Vaillant Arotherm Plus issues - circulation, efficiency and performance

@saz any updates? We have the same HP and have similar issues with efficiency and comfort.

4 years ago
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