---
title: "Set to Heat Mode"
method: POST
path: "/thermostats/heat"
tags: ["/thermostats"]
---

# Set to Heat Mode

`POST /thermostats/heat`

Sets a specified [thermostat](/capability-guides/thermostats) to [heat mode](/capability-guides/thermostats/configure-current-climate-settings).

## Request body

- object
  - `device_id` string, uuid, required — ID of the thermostat device that you want to set to heat mode.
  - `heating_set_point_celsius` number, float — [Heating set point](/capability-guides/thermostats/understanding-thermostat-concepts/set-points) in °C that you want to set for the thermostat. You must set one of the `heating_set_point` parameters.
  - `heating_set_point_fahrenheit` number, float — [Heating set point](/capability-guides/thermostats/understanding-thermostat-concepts/set-points) in °F that you want to set for the thermostat. You must set one of the `heating_set_point` parameters.

## Response `200`

OK

- object
  - `action_attempt` object, required — Tracks the progress of this operation. Poll using the action_attempt_id. See the [action_attempt object](/api/action_attempts/object).
    - `action_attempt_id` string, uuid, required — ID of the action attempt.
    - `action_type` 'SET_HVAC_MODE', required — Type of action being tracked.
    - `status` 'pending' | 'success' | 'error', required — Current status of the action.
    - `result` object, nullable — Result payload on success.
    - `error` object, nullable — Error details on failure.
      - `type` string
      - `message` string

## Other responses

- `400` — Bad Request
- `401` — Unauthorized

---

[API](https://skmtc.net/seam/apis/seam-connect.md) · [All operations](https://skmtc.net/seam/apis/seam-connect/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/seam/seam-connect/versions/00c35395ce12/schema)