Space Heater Thermostat Control - Exergy HA Blueprint

Control your bitcoin miner like a traditional space heater with thermostatic temperature control.

Before You Start

Miner connected to Home Assistant - Install the Canaan Avalon Home Integration first
Temperature sensor - Zigbee, WiFi, or any HA-compatible sensor in the room
Home Assistant with HACS - See our system configuration guide if needed

How It Works

This automation turns your miner on and off based on room temperature:

Temperature drops below target → Miner turns ON
Temperature rises above target → Miner turns OFF
Repeat to maintain desired temperature

Just like a space heater with a thermostat, but earning bitcoin while heating.

Automation Installation

To use the YAML automation examples in this guide:

Copy the desired YAML code from the examples below
In Home Assistant, navigate to Settings → Automations & Scenes
Click the three-dot menu (⋮) in the top right corner
Select Edit in YAML
Paste the copied YAML code at the bottom of your automations file
Adjust the entity_id values to match your specific miner entities
Click Save
The new automation(s) will appear in your automations list

Alternatively, you can create each automation through the UI and manually configure the triggers, conditions, and actions based on the examples.

Configuration

Required Inputs

Input	Description
Miner Entity	Your miner’s power switch (e.g., switch.avalon_mini_3_power)
Temperature Sensor	Room temperature sensor (e.g., sensor.living_room_temperature)
Target Temperature	Desired room temperature

Note: This example uses the Avalon Mini 3 onboard input or ambient temperature sensors for reporting to the thermostat. You could instead use a different temperature sensor in the room such as a Zigbee Temperature sensor.

Optional Inputs

Input	Default	Description
Hysteresis	1.0°F	Temperature band to prevent rapid cycling
Minimum On Time	5 min	Prevent short cycles
Minimum Off Time	5 min	Allow miner to cool down

Understanding Hysteresis

Hysteresis prevents the miner from rapidly turning on and off:

Example with 70°F target temperature and 1°F hysteresis:

Miner turns ON when temp drops to 69°F
- This is the Cold Tolerance reference below
Miner turns OFF when temp rises to 71°F
- This is the Hot Tolerance reference below
2°F total swing (target ± hysteresis)

Increase hysteresis for longer, less frequent cycles. Decrease for tighter temperature control.

Creating a Climate Helper

The recommended approach is to create a Generic Thermostat climate entity that controls your miner. This gives you a native thermostat interface in Home Assistant.

Method 1: GUI Configuration

Navigate to Settings → Devices & Services → Helpers
Click + Create Helper
Select Generic Thermostat
Configure the following:

Setting	Value	Description
Name	Exergy Office	Name for your thermostat
Heater	switch.exergy_office_mini_3_power	Your miner’s power switch
Target Sensor	sensor.exergy_office_sensor_temperature	Room temperature sensor
Min Temp	60	Minimum temperature setting
Max Temp	80	Maximum temperature setting
Target Temp	70	Default target temperature (this is editable from the dashboard after being deployed)
Cold Tolerance	1	How far below target before turning on
Hot Tolerance	1	How far above target before turning off
Min Cycle Duration	10 seconds	Minimum time heater stays in one state

Click Create

Method 2: YAML Configuration

Add this to your configuration.yaml file:

climate:
  - platform: generic_thermostat
    name: Exergy Office
    heater: switch.exergy_office_mini_3_power #Your Miner Power Switch
    target_sensor: sensor.exergy_office_mini_3_ambient_temperature #Or use an external sensor like: sensor.exergy_office_sensor_temperature
    min_temp: 60 #Set the lowest temp you'll allow this thermostat to be set
    max_temp: 80 #Set the highest temp you'll allow this thermostat to be set 
    ac_mode: false
    target_temp: 70 #Default starting temp
    cold_tolerance: 1
    hot_tolerance: 1
    min_cycle_duration:
      seconds: 10
    keep_alive:
      minutes: 3
    initial_hvac_mode: "heat" #Thermostat defaults to heating mode, can also be set to off
    precision: 0.5 #Amout you want to be able to set the thermostat. 0.5 = 70,70.5,80, etc.

After adding the YAML configuration:

Go to Developer Tools → YAML
Click Check Configuration
If valid, click Restart under Server Controls

Understanding the Parameters

Parameter	Description
heater	The switch entity that controls your miner
target_sensor	Temperature sensor that measures room temperature
cold_tolerance	Temperature drops this much below target before turning ON
hot_tolerance	Temperature rises this much above target before turning OFF
min_cycle_duration	Prevents rapid on/off cycling
keep_alive	Sends periodic updates to the heater switch
initial_hvac_mode	Mode when Home Assistant starts (“heat” or “off”)
precision	Temperature adjustment increment (0.5 or 1.0)