HASmartThermostat
Smart Thermostat with PID controller for HomeAssistant
Runssource: GitHubPythonMITcommit ef52b37fd981
Python, MIT licensed. The project labels itself: air conditioner, heater, heater control, heater controller, heating, heating control, heating controller and home automation.
HASmartThermostat runs. An Argusic agent installed it in 5 minutes and hit 4 errors and fixed every one without help on a clean machine with no GPU, and the whole session was recorded.
A fresh copy of the smart_thermostat custom component loads under Home Assistant 2025.1.4 in this container: the climate entity switched its heater on/off as the mocked temperature crossed the target (100.0/heating vs 0.0/idle), all four documented custom services answered 200, and the process ran error-free and shut down cleanly.
What the agent ended up with on a clean machine, in its own words. How this is measured
Measured by Argusic on a fresh machine every time. Every number links to its evidence. Argusic Score 100 of 100 (the mean of this project's run scores).
At a glance
Subject data from GitHub, linked at the top of this page, refreshed . Test data by Argusic (CC BY 4.0); every number links to a run page with the full log, the recording, and their sha256 hashes.
What was measured
From the run that decided this verdict. Every line is a recorded value, not an estimate.

What went wrong, in the agent's own words
The agent's own words, worst first, never rewritten into advice.
- pip3 install homeassistant failed: externally-managed-environment (PEP 668); system Python cannot be written to3 minutes
- configuration.yaml validation: 'switch' is an invalid option for 'template' in this HA version2 minutes
- Mock heater turn_on failed because Action notify.persistent_notification was not found (notify integration not loaded)2 minutes
- hass rejected the flag --log-print yes (README-era, removed from the 2025.1.4 CLI)1 minute
- Install time
- 5 minutes
- Cold machine to finish
- 40 minutes
- Errors hit and fixed
- 4 hit, 4 fixed with no human help
- How the result was proved
- hass --config <dir> -v launched HA 2025.1.4 and GET http://127.0.0.1:8123/ returned 200; with hvac_mode heat + target 25 and the mock sensor pushed to 15.0, GET /api/states showed climate.smart_thermostat_test=heat/hvac_action heating/control_output 100.0 and switch.heater=on; pushing 24.9 flipped it to heat/idle/0.0 and heater=off; smart_thermostat/set_pid_gain, set_pid_mode, clear_integral and set_preset_temp each returned 200 with kp/ki/pid_i/preset list reflected in state attributes; process stayed alive 30+ seconds, exited rc 0 on SIGINT, log had 0 ERROR lines; standalone PID+PIDAutotune script printed UNIT_OK
- Model tokens used
- 3,292,150
- Exact commit tested
- ef52b37fd981
- Container image
- sha256:cdd920bce783
What was not measured
The other half, so you can see exactly how far this evidence goes. A gap is printed as a gap and never filled in.
- Peak GPU memory
- this ran on a CPU machine, so there was no GPU to sample
- Behaviour over a long run
- each attempt uses the smallest documented settings and a fixed time budget, so this measures whether it runs, not how it holds up under load
The end of the recording
The last lines of the terminal session that decided this verdict, exactly as they were recorded.
-rw-r--r-- 1 runner runner 1056 Oct 18 16:16 LICENSE.MD -rw-r--r-- 1 runner runner 23387 Oct 18 16:16 README.md -rw-r--r-- 1 runner runner 22016 Oct 18 16:16 climate_chart.png drwxr-xr-x 3 runner runner 30 Oct 18 16:16 custom_components -rw-r--r-- 1 runner runner 95 Oct 18 16:16 hacs.json drwxrwxr-x 5 runner runner 115 Oct 18 16:19 venv venv/ __pycache__/ *.pyc 16:55:40 tokens used 3,292,150
Replay the whole session, every command from a clean machine to this point.
How it was tested
One agent, one container, no human help. It installs the project the way its own documentation says to, runs it, and fixes what breaks. Everything below is recorded as it happened: the terminal session, the log and the exact commit. The full method.
Strengths and limits
Measured facts, not opinions. How this is written.
What went well
- Reached a running state on a clean machine, with the session recorded.
- Installed in 5 minutes.
- Recovered from all 4 errors without a human stepping in, which says the failures are documented well enough to solve.
- Ran without a GPU, so it does not need one to start.
- Licensed MIT, as reported by its host.
What did not, or is not known
- Measured once so far. A single attempt shows it can run, not that it runs reliably.
What it is a reasonable choice for
- Trying it on a laptop or a small server: it reached a running state without a GPU.
- A quick evaluation: it was running 5 minutes after the clone.
Run history
Topics (from GitHub)
air-conditionerheaterheater-controlheater-controllerheatingheating-controlheating-controllerhome-automationpid-controllersmart-thermostatthermostat
Embed the badge
Markdown for the project README. It links back here; terms on the terms page.
[](https://argusic.com/subject/hasmartthermostat)Questions
- Does HASmartThermostat run?
- Yes. HASmartThermostat runs. Argusic installed and launched it on a clean machine in 5 minutes, hitting 4 errors on the way, and recorded the session.
- How did Argusic test HASmartThermostat?
- On a fresh, disposable machine, with every command recorded and the repository pinned at commit ef52b37fd981. One attempt is recorded, and the full method is on the methodology page.
- What did it cost to test HASmartThermostat?
- The run that produced this verdict cost $0.71: real compute and model cost, not a list price per million tokens. It is recorded on that run's page.
- How long does HASmartThermostat take to install?
- 5 minutes in the run that decided this verdict, from a clean machine to a running state. That is one measured attempt, not an average.
- Does HASmartThermostat need a GPU?
- Not to start. Argusic reached a running state on a machine with no GPU.
- What goes wrong when installing HASmartThermostat?
- 4 things broke in the recorded run, and 4 were fixed without human help. Each one, and the time it cost, is listed on this page.
- Where is the evidence for HASmartThermostat?
- The recorded run is on this page, each linking to its full log and terminal recording, stored with a sha256 fingerprint so it cannot be quietly altered.