# New heat pump Grant R290 - hot water advice

**URL:** <https://community.openenergymonitor.org/t/new-heat-pump-grant-r290-hot-water-advice/28254>\
**Category:** Heatpump\
**Tags:** grantr290\
**Created:** [15 March 2025 09:55 UTC](https://community.openenergymonitor.org/t/new-heat-pump-grant-r290-hot-water-advice/28254 "2025-03-15T09:55:30Z")\
**Posts on this page:** 1\
**Showing post:** 149

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**Author:** ![glyn.hudson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/glyn.hudson/32/35003_2.png) [@glyn.hudson](https://community.openenergymonitor.org/u/glyn.hudson)\
**Post date:** [19 May 2026 00:58 UTC](https://community.openenergymonitor.org/t/new-heat-pump-grant-r290-hot-water-advice/28254/149 "2026-05-19T00:58:47Z")

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I think DHW boost is ID 115: `HDWStartOneLoading`

`curl -u "admin:admin" "http://<ECONET_IP>/econet/newParam?newParamName=115&newParamValue=1"`

Here’s the full paramater list: [econet-param.md · GitHub](https://gist.github.com/LeeNuss/accef83caf6c2294c0eb8e43867c04e7)

I’ve not tested it since I don’t use econet any more. I use Econext which makes integration with HA much easier: [Econext: Direct local control of Grant HP290 Econet replacement (Plum ecoMAX360i)](https://community.openenergymonitor.org/t/econext-direct-local-control-of-grant-hp290-econet-replacement-plum-ecomax360i/29758)

Another option is this Econet HACS integration, this may support DHW boost: [GitHub - jontofront/ecoNET-300-Home-Assistant-Integration: ecoNET 300 integration to HA · GitHub](https://github.com/jontofront/ecoNET-300-Home-Assistant-Integration)

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