A different take on the thermostat card for Home Assistant Lovelace UI. The aim is to provide a card with simpler interactions that are easier to use and take up less space, as well as provide more modularity to tweak the card. For example the abiltity to embed sensor values that are relevant to your thermostat (like humidity, energy usage, hours on +++).

Hide everything but sensors and temperature control:

type: custom:simple-thermostat
entity: climate.living_room
step_layout: row
name: false
icon: false
control: false

Home Assistant 0.84 or higher

1. Download the simple-thermostat.js from the latest release and store it in your configuration/www folder. Previously you could download the source file from Github but starting from the 0.14 release that is no longer possible. If you try to do so it will crash
2. Configure Lovelace to load the card:

resources:
  - url: /local/simple-thermostat.js?v=1
    type: module

• entity string: The thermostat entity id required
• name string|false: Override the card name, or disable showing a name at all. Default is to use the friendly_name of the thermostat provided
• decimals number: Specify number of decimals to use: 1 or 0
• fallback string: Specify a text to display if a valid set point can't be determined. Defaults to N/A
• icon string|object: Show an icon next to the card name. You can also pass an object to specify state-specific icons. Defaults state-specific icons radiator/radiator-disabled/snowflake
  • idle: string: Use this icon for state idle
  • heating: string Use this icon for state heating
  • cool: string Use this icon for state cool
• step_size number: Override the default 0.5 step size for increasing/decreasing the temperature
• step_layout string: row or column (default). Using row will make the card more compact
• label object: Override untranslated labels
  • temperature: string Override Temperature label
  • state: string Override State label
• hide object: Control specifically information fields to show. Defaults to showing everything
  • temperature: bool (Default to false)
  • state: bool (Default to false)
• control object|array (From 0.27)
  • _names bool: Show mode names or not. Defaults to true
  • _icons bool: Show mode icons or not. Defaults to true
  • _headings bool: Show a heading for each mode button row. Defaults to true
  • {type} object|bool: The key of the mode type (hvac, preset, fan, swing)
    • _name _string: Override the name of the mode type
    • {mode} string: Name of mode type to conttrol
      • name string|bool: Specify a custom name or set to false to show only the icon
      • icon string|bool: Specify a custom icon or set to false to not show icon
• sensors array
  • entity string: A sensor value entity id
  • name string: Specify a sensor name to use instead of the default friendly_name
  • icon string: Specify an icon to use instead of a name
  • attribute string: The key for an attribute to use instead of state. If this sensor has no entity it will use the main entity's attributes
  • unit string: When specifying an attribute you can manually set the unit to display

In 0.27, in order to both support changes in the climate domain and to support controlling all modes like hvac, preset, fan and swing modes the old modes configuration have been removed and replaced with a control config.

The control config is most easily explained using a few examples as it supports both a simplified definition using just an array to list the types of modes to control. By default, with no config, it will show hvac and preset (if the entity supports it). You can replicate the default manually like this:

control:
  - hvac
  - preset

This will list all modes for both types. You can get more fine grained control by switching to an object format and taking control of specific modes:

control:
  preset:
    away: true
    none:
      name: Not set

What is worth noticing is that there is no merging of the default any more, so with this config you will not get hvac_mode displayed. If you still want it to display like default you need to set:

control:
  preset:
    away: true
    none:
      name: Not set
  hvac: true

As previously you can define both name and icon on the individual modes, including setting them to false. What is new is that if you want to only show icons you can hide the names on all modes for the card (or vice versa for only showing names)

control:
  _names: false

Please note that you need to quote off/on mode keys to not have them interprented as true/false.

control:
  hvac:
    off: will not work
    "off": works

cards:
  - type: 'custom:simple-thermostat'
    entity: climate.my_room
    step_size: 1
    sensors:
      - entity: sensor.fibaro_system_fgwpef_wall_plug_gen5_energy
      - entity: sensor.fibaro_system_fgwpef_wall_plug_gen5_power
        name: Energy today
      - attribute: min_temp
        name: Min temp
    control:
      hvac:
        some_mode: false
        another_mode: false
        'off':
          name: Make it cold
          icon: false
        'on':
          name: false
          icon: mdi:whitewalker

The card uses the following CSS variables:

These variables can be changed globally in the current theme or on each card via card-mod.

Example that makes everything smaller and more compact except sensors that gets blown up completely.

example-theme:
  st-font-size-xl: 24px
  st-font-size-m: 20px
  st-font-size-title: 20px
  st-font-size-sensors: 30px
  st-spacing: 2px

Same example as above, but will only apply to a single card.

type: 'custom:simple-thermostat'
style: |
  ha-card {
    --st-font-size-xl: 24px;
    --st-font-size-m: 20px;
    --st-font-size-title: 20px;
    --st-font-size-sensors: 30px;
    --st-spacing: 2px;
  }
  ...