# New to emoncms. how to create feeds to count hot water and heating kWh usage?

**URL:** <https://community.openenergymonitor.org/t/new-to-emoncms-how-to-create-feeds-to-count-hot-water-and-heating-kwh-usage/29793>\
**Category:** Getting Started\
**Tags:** kwh, hot-water, emoncms\
**Created:** [2 March 2026 09:59 UTC](https://community.openenergymonitor.org/t/new-to-emoncms-how-to-create-feeds-to-count-hot-water-and-heating-kwh-usage/29793 "2026-03-02T09:59:10Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![ksim](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/ksim/32/37602_2.png) [@ksim](https://community.openenergymonitor.org/u/ksim)\
**Post date:** [2 March 2026 09:59 UTC](https://community.openenergymonitor.org/t/new-to-emoncms-how-to-create-feeds-to-count-hot-water-and-heating-kwh-usage/29793/1 "2026-03-02T09:59:10Z")

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I am new to EmonCMS, fantastic kit, and fantastic software, big thank you for this.

I tried to find an answer but without success.  
I have inputs from my heat pump electric\_Power, electric\_Energy and pin15 as hot water diverter status. So the feeds are heatpump\_elec, heatpump\_elec\_kwh and heatpump\_dhw. I’d like to configure a few extra feeds: heatpump\_elec\_dhw, heatpump\_elec\_hc for power on hot water and heating circuit, and also heatpump\_elec\_dhw\_kwh, heatpump\_elec\_hc\_kwh as energy. Power is simple with virtual feed with just multiplication to heatpump\_dhw. But it is not clear for me how to deal with energy (kwh feeds). Anyone can point me into right direction?

Thanks!

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**Author:** ![ksim](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/ksim/32/37602_2.png) [@ksim](https://community.openenergymonitor.org/u/ksim)\
**Post date:** [4 March 2026 10:11 UTC](https://community.openenergymonitor.org/t/new-to-emoncms-how-to-create-feeds-to-count-hot-water-and-heating-kwh-usage/29793/2 "2026-03-04T10:11:15Z")

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For now done it as following, does this look correct?

 ![image](https://community.openenergymonitor.org/uploads/default/original/3X/e/f/ef01f9642c9771928e5fed1404a64c6a3845f3f1.png)

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**Author:** ![TrystanLea](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/trystanlea/32/31_2.png) [@TrystanLea](https://community.openenergymonitor.org/u/TrystanLea)\
**Post date:** [4 March 2026 19:06 UTC](https://community.openenergymonitor.org/t/new-to-emoncms-how-to-create-feeds-to-count-hot-water-and-heating-kwh-usage/29793/3 "2026-03-04T19:06:10Z")

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Hello @ksim

I dont think the above will work Im afraid.

I would use the heat meter heat output power data and then use the DHW flag and power\_to\_kwh to convert to energy. That should give you better results.

Lets say:

- Log to feed heatpump\_heat
- x feed: heatpump\_dhw
- Log to feed: heatpump\_heat\_dhw
- Power to kwh: heatpump\_heat\_dhw\_kwh
- Reset to Original
- x feed: heatpump\_space (? perhaps create an inverse feed)
- Log to feed: heatpump\_heat\_space
- Power to kwh: heatpump\_heat\_space\_kwh

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**Author:** ![ksim](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/ksim/32/37602_2.png) [@ksim](https://community.openenergymonitor.org/u/ksim)\
**Post date:** [4 March 2026 19:50 UTC](https://community.openenergymonitor.org/t/new-to-emoncms-how-to-create-feeds-to-count-hot-water-and-heating-kwh-usage/29793/4 "2026-03-04T19:50:03Z")

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thank you will try

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**Author:** ![ksim](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/ksim/32/37602_2.png) [@ksim](https://community.openenergymonitor.org/u/ksim)\
**Post date:** [5 March 2026 08:52 UTC](https://community.openenergymonitor.org/t/new-to-emoncms-how-to-create-feeds-to-count-hot-water-and-heating-kwh-usage/29793/5 "2026-03-05T08:52:43Z")

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Worked perfectly, thank you!