Inferring energy consumption from power (Vaillant)

Energy
1

Like many users of Vaillant heat pumps, the “energy consumed” values on the MyVaillant integration do not work properly. There appears to be a forked version of the MyVaillant integration available called Vaillant Cloud, but I cannot find this on the HACS repository, and I am not sure whether it would solve the underlying problem in any event.

Oddly, the MyVaillant integration does give a reliable and frequently updated power output. I was wondering whether I could use this to track energy use. I looked at using the “utility meter” helper to do this, but it appears to expect energy rather than power.

Does anyone know whether this is feasible and, if so, how best to go about it? Thank you in advance.

1 Like
2

The integration helper converts power to energy.

3

I cannot find an “integration” sensor. There is an “integral” sensor - is this what you mean?

Thank you for your reply.

4

Yep same thing.

5

Thank you for that. I set it to use the right Reimann sum, and it appears to work, giving me a figure in Watt minutes. However, I cannot select this entity in the energy tab - is the problem that this is in Watt minutes rather than kilo-Watt hours?

6

Yes I don’t think watt minutes are supported. Settings page says:

Pick a sensor which measures grid consumption in either of cal, Gcal, GJ, GWh, J, kcal, kJ, kWh, Mcal, MJ, MWh, mWh, TWh, Wh.

Also typically you want left riemann sum, not right.

7

i also step into this discussion as I am also interested in monitoring the energy consumption of my Vaillant heat pump

8

So far, I have set this up with a left Reimann sum and using kWh and the “power” as the input, and this has now been accepted into my individual device section on the energy card. I have put the built-in DHW and space heating energy trackers as subsidiary devices so that I can use the latter if and when they work.

My heat pump has not run so far to-day, so I have not had a chance to see whether it works yet - because there is no history, it reports it as “Heat pump (untracked)” in the energy card.

9

I can confirm that this method works - thank you.

10

My boiler is showing over 2000kWh for electricity last year. Which makes no sense whatsoever. It’s a gas boiler. And this is directly in the MyVaillant app. The integration just pulls that crap as is. Did they forget to divide that by 10 or something? Does anyone know, so I can just do a template sensor with the adjusted ratio