# COP expectations for 7kW vaillant

**URL:** <https://community.openenergymonitor.org/t/cop-expectations-for-7kw-vaillant/29770>\
**Category:** Heatpump\
**Tags:** vaillant\
**Created:** [19 February 2026 21:46 UTC](https://community.openenergymonitor.org/t/cop-expectations-for-7kw-vaillant/29770 "2026-02-19T21:46:59Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Timbones](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/timbones/32/20308_2.png) [@Timbones](https://community.openenergymonitor.org/u/Timbones)\
**Post date:** [20 February 2026 13:57 UTC](https://community.openenergymonitor.org/t/cop-expectations-for-7kw-vaillant/29770/6 "2026-02-20T13:57:00Z")

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> [@vbob](#):
>
> Wonder if there are other means to match it rather than measuring return temperatures on the buffer.

Measuring the temperatures at each of the 4 ports of the buffer can help determine if the two pumps are adequately matched. Can use cheap digital thermometers like [Mark did here](https://community.openenergymonitor.org/t/mitsu-zubadan-flow-temperature-issue/29576/130) using [John’s spreadsheet](https://community.openenergymonitor.org/t/mitsu-zubadan-flow-temperature-issue/29576/80) to calculate how it affects power delivery.

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