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webcmg
@webcmg
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Joined: Jan 5, 2022
Last seen: Dec 25, 2025
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Topics: 3 / Replies: 108
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RE: Are there issues with Vaillant’s app?

@editor Vaillant software is flaky in my experience. There are times when it doesn't connect and a circular arrow icon just spins on the screen. I'm t...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Hi @colin any chance of a graph of your Jan usage please? I've reduced the curve to 0.35 setback 18 deg (running weekdays until 16.00 then 19.5 deg un...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin for external temperature I have two methods currently. The first is the Vaillant external temperature sensor via a custom Vaillant HACS integra...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin you do have a VMZ AI panel, any chance you could compare your settings to mine posted above? Consumption and average flow temp has come right...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin have you got any pictures of your installation you could share please? Do you have any room stats?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@heacol yes, worried that's the case. Need someone to take a look at it, but need remaining insulation issues and rad changes to be addressed first. N...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin thanks, do you have an intermediate heat exchanger (VMZ MWT 150) and buffer tank? I am also interested in your settings for your VMZ AI: Co...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@cathoderay This looks more like my usage profile. What's your setup/house size etc? DO you have heat exchanger and buffer tank?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin thanks, please can you send the same graphs for DHW consumption and yield?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@heacol I'd agree if turning the pump down had made any difference at all to the consumption and comfort... but it hasn't.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@saz not yet, but suspect it's inevitable given this is a new build and it's not living up to expectations.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin heatmeisers are currently set to 30 degrees, so effectively dumb. Heat curve now set to 0.4 but this is right on the limit of comfort upstair...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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