stiebel-eltron-isg-dashboard

A Home Assistant dashboard for Stiebel Eltron heat pumps, connected via the custom integration stiebel_eltron_isg_component (ISG / Modbus).

The dashboard uses the modern sections layout and the HACS card ApexCharts for the history graphs. The YAML can be pasted directly into a dashboard's code editor (Dashboard → ⋮ → Raw configuration editor).

Updated 07/2026 – completely reworked compared to the original masonry version. House-specific parts (Shelly 3EM power metering, radiator / room thermostats) are intentionally not included so the dashboard stays generic for any ISG heat pump.

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Views

The dashboard (dashboard.yaml) has three views:

View	Icon	Content
Status	mdi:heat-pump-outline	Overview (errors, compressor, heating/cooling, NHZ booster heater, summer mode), pumps, flow/return (incl. 24 h means), heating-circuit 1, buffer and DHW temperatures, COP (today / 30 d / JAZ), seasonal COP (calendar year / Oct–Apr), compressor cycling, high/low pressure, flow rate & hot gas
Energy	mdi:lightning-bolt	Power consumption & heat production (5 days + daily trend, cumulative), COP vs. outdoor temperature and an efficiency curve (30 days)
Settings	mdi:cog-outline	Heating circuit 1 (thermostat, heating curve, comfort/eco/dual-mode), DHW, SG Ready

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Requirements

Integration

• stiebel_eltron_isg_component (via HACS)

Required custom card (HACS)

• apexcharts-card – for all history graphs. Without it the Apex charts will not render.

No other custom cards are required by this dashboard.

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Additional sensors

Some cards reference sensors that are not provided by the integration. They are added to Home Assistant via directory includes:

# configuration.yaml
template:          !include_dir_merge_list templates/
sensor:            !include_dir_merge_list sensors/
utility_meter:     !include_dir_merge_named utility_meter/
automation manual: !include_dir_merge_list automation/   # only for the season SPF (B)

The season SPF (B) also needs a few helpers — merge helpers.yaml (input_number: / input_text:) into your configuration.yaml or a package.

All entities below are in the sensor. domain (prefix omitted for brevity).

templates/heatpump.yaml – template sensors:

Entity	Description
heatpump_cop_today	COP today = produced heat / consumed electricity (heating + DHW)
heatpump_jaz_total	JAZ (seasonal performance factor) over the total counters
heatpump_cop_30d	COP over the last 30 days — fed by the 30-day utility meters
heatpump_flow_temperature_at_compressor	Flow temperature, only while the compressor is running
heatpump_spf_heating_season	(A) Calendar-year SPF, space heating only — fed by the yearly utility meters
heatpump_spf_heating_period	(B) True heating-season SPF (Oct–Apr) — see Seasonal performance

sensors/heatpump.yaml – history-stats & statistics:

Entity	Type	Description
compressor_on_today	History-Stats	Compressor starts today (cycling)
compressor_on_yesterday	History-Stats	Compressor starts yesterday
heatpump_flow_temperature_24h_mean	Statistics	Flow temperature, rolling 24 h mean
heatpump_flow_temperature_at_compressor_24h_mean	Statistics	24 h mean of the flow temperature, only while the compressor runs

utility_meter/heatpump.yaml – 30-day (monthly cycle) counters that feed heatpump_cop_30d:

Entity	Description
wp_consumed_heating_30d	Consumed electricity for heating, monthly cycle
wp_consumed_water_heating_30d	Consumed electricity for DHW, monthly cycle
wp_produced_heating_30d	Produced heat for heating, monthly cycle
wp_produced_water_heating_30d	Produced heat for DHW, monthly cycle
wp_consumed_heating_year	(A) Consumed electricity for heating, yearly cycle
wp_produced_heating_year	(A) Produced heat for heating, yearly cycle

Note: The heatpump_cop_30d template needs the four monthly meters. They reset on a monthly cycle, so the value represents the current month rather than a strict rolling 30 days.

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Seasonal performance (SPF)

The heat-pump industry number closest to a "seasonal COP" is the SPF (Seasonal Performance Factor) — Σ produced heat / Σ consumed electricity over a period. A true normative SCOP (EN 14825) is a rating value measured against a standardised reference climate and cannot be derived from field sensors. What you can build is a field SPF, and — because SCOP conventionally covers space heating only — the variants here use the heating counters (no DHW):

Variant	Entity	Window	Notes
A	sensor.heatpump_spf_heating_season	Calendar year (resets 1 Jan)	Simple; splits a heating season at New Year
B	sensor.heatpump_spf_heating_period	Heating season Oct–Apr	One clean number per winter; live during the season, frozen afterwards

Variant A needs only the two yearly utility meters. Variant B additionally needs the helpers in helpers.yaml and the two automations in automation/heatpump.yaml, which snapshot the total counters at the season start (1 Oct) and keep the SPF updated through the season.

Both values only become meaningful during the heating season — in summer the pump barely does space heating, so they stay empty. utility_meter cannot back-fill, so counting starts from the moment you deploy them.

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Installation

1. Install the integration and apexcharts-card via HACS.
2. Copy templates/heatpump.yaml, sensors/heatpump.yaml and utility_meter/heatpump.yaml into your own HA configuration and include the directories (see above). For the season SPF (B) also add helpers.yaml and automation/heatpump.yaml. New utility_meter entities require a restart; templates/automations/helpers can be reloaded.
3. Create a new dashboard → ⋮ → Raw configuration editor → paste the contents of dashboard.yaml.

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Screenshots

Status	Energy	Settings

Note: the screenshots are intentionally kept in German (the author's Home Assistant UI language). The dashboard.yaml in this repository uses English labels, so your own dashboard will render in English.

Note: the energy screenshot additionally shows the (house-specific) "Power & Energy" section with the Shelly 3EM readings. That section is not part of the published dashboard.yaml, but it illustrates how the dashboard can be extended with your own power metering.