home-assistant/automations/ac_peak_setback.yaml

# ac_peak_setback — let the house drift during the utility peak window
#
#   id / entity : ac_peak_setback  ->  automation.ac_peak_setback_to_82
#   trigger     : 14:00 local (America/New_York)
#   purpose     : On work days, set cool 82F to coast through the 14:00-19:00 peak.
#
# Graceful degradation (v2):
#   * workday sensor unavailable/unknown -> fall back to a plain Mon-Fri check
#     (a broken holiday sensor must not silently cancel the setback).
#   The original used a blocking `condition` on the workday sensor, which would
#   skip the run whenever the sensor was unavailable; that is the bug this fixes.
#
# v2 (2026-07-09): workday fallback added. See AUTOMATIONS.md.
id: ac_peak_setback
alias: AC - Peak setback to 82
description: >-
  v2 (2026-07-09). At 2pm on work days, sets the thermostat to cool/82F to coast
  through the 2-7pm peak. Falls back to Mon-Fri if the workday sensor fails.
  Managed in git; see AUTOMATIONS.md.
mode: single
triggers:
  - trigger: time
    at: "14:00:00"
conditions: []
actions:
  - variables:
      is_workday: "{% set wd = states('binary_sensor.workday_sensor') %}{% if wd in ['on','off'] %}{{ wd == 'on' }}{% else %}{{ now().weekday() < 5 }}{% endif %}"
  - if:
      - condition: template
        value_template: "{{ is_workday }}"
    then:
      - action: climate.set_hvac_mode
        target:
          entity_id: climate.t6_pro_z_wave_programmable_thermostat_with_smartstart
        data:
          hvac_mode: cool
      - action: climate.set_temperature
        target:
          entity_id: climate.t6_pro_z_wave_programmable_thermostat_with_smartstart
        data:
          temperature: 82