# Vaillant inbuilt monitoring vs MID meters

**URL:** <https://community.openenergymonitor.org/t/vaillant-inbuilt-monitoring-vs-mid-meters/24230>\
**Category:** Heatpump\
**Tags:** heatpumpmonitor\
**Created:** [23 August 2023 08:36 UTC](https://community.openenergymonitor.org/t/vaillant-inbuilt-monitoring-vs-mid-meters/24230 "2023-08-23T08:36:31Z")\
**Posts on this page:** 1\
**Showing post:** 60

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**Author:** ![Andre\_K](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/andre_k/32/28208_2.png) [@Andre\_K](https://community.openenergymonitor.org/u/Andre_K)\
**Post date:** [14 March 2024 20:09 UTC](https://community.openenergymonitor.org/t/vaillant-inbuilt-monitoring-vs-mid-meters/24230/60 "2024-03-14T20:09:17Z")

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> [@Timbones](#):
>
> Like, maybe they’re including some fiddle factor to account for lost heat or something?

 ![Screenshot_20240314-210431](https://community.openenergymonitor.org/uploads/default/original/3X/0/2/023de3430d4826383ed27fb443daad98460b4205.png)

My heat pump was off for a couple of hours this afternoon because it was warm but the myVaillant app still registers electrical energy input without heat output. That’s around 12W which is consistent with my Shelly measurements. So the electrical energy input that Vaillant shows also measures standby power and pumps which both don’t contribute to generated heat.

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