# Heating power calculation from ESPAltherma data **URL:** \ **Category:** Heatpump\ **Tags:** daikin\ **Created:** [8 December 2024 20:52 UTC](https://community.openenergymonitor.org/t/heating-power-calculation-from-espaltherma-data/27375 "2024-12-08T20:52:21Z")\ **Posts on this page:** 1\ **Showing post:** 28
**Author:** ![Stephen\_Crown](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/stephen_crown/32/26680_2.png) [@Stephen\_Crown](https://community.openenergymonitor.org/u/Stephen_Crown)\ **Post date:** [9 December 2024 17:17 UTC](https://community.openenergymonitor.org/t/heating-power-calculation-from-espaltherma-data/27375/28 "2024-12-09T17:17:08Z")
Hi @Chris_Hill I spent some time looking at this, as did others over on the ESPAltherma GitHub site. I cover right at the start of the guide ESPAltherma guide I wrote up for this site last year that separate electrical power input monitoring is needed (unfortunately): > [@Daikin Altherma, ESPAltherma & Home Assistant with OpenEnergyMonitor](https://community.openenergymonitor.org/t/daikin-altherma-espaltherma-home-assistant-with-openenergymonitor/25057/6): > > Here is my personal Daikin Altherma → ESPAltherma → Home Assistant → EmonCMS setup: I hope that it is of value to others, but do feel free to modify things, try other things out. I am not stating this is the only way of doing it. In fact, this very site has a [shop which sells billing grade metering options](https://docs.openenergymonitor.org/applications/heatpump.html), which will no doubt be more accurate. I chose to go the ESPAltherma route for a few reasons: can’t find a plumber generally round here willing or wanting(!) to work on a heat pump (hence… Hopefully you can get a separate monitor and feed it into your setup. --- _[View the full topic](https://community.openenergymonitor.org/t/heating-power-calculation-from-espaltherma-data/27375)._