BlitzHome-BH-AP2501
SAT
| BlitzHome-BH-AP2501 | SAT | |
|---|---|---|
| 1 | 3 | |
| 0 | 42 | |
| - | - | |
| 2.7 | 9.3 | |
| about 2 months ago | about 1 month ago | |
| Python | ||
| - | GNU General Public License v3.0 only |
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BlitzHome-BH-AP2501
SAT
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ESPHome
If your boiler supports OpenTherm, check out https://github.com/Alexwijn/SAT
You can have your thermostat in home assistant and make your boiler run as efficiently as possible at the same time
See https://news.ycombinator.com/item?id=40052824
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100% Efficient Gas Boiler with Real-Time Data
SAT (Smart Autotune Thermostat) is a free integration you can add to Home Assistant, which can work with your existing thermostat but the intention is that it replaces it altogether (SAT becomes your virtual thermostat). There are many more features but it's best to head to https://github.com/Alexwijn/SAT for details.
OpenTherm is a standard communications protocol which SAT uses, however, you need this hardware - https://www.nodo-shop.nl/en/featured/211-opentherm-gateway.h...
The installation is usually very simple, you connect two cables to the boiler and its OpenTherm module in the boiler and then it uses MQTT to connect to Home Assistant via WiFi. If you are not comfortable touching the boiler, ask your plumber to help you.
By the way, that hardware is much cheaper than Hive which does not support OpenTherm at all. Google Nest does but is so extremely limited, and from my experience, it was cycling too often and did not autotune which is the main reason why you want SAT.
If you check the manufacturer of your boiler and its model, you should be able to find out if your boiler supports OpenTherm.
This is new build~ (2017) but we are not the first owners of the house and personally, I would probably not try to retrofit such system.
What are some alternatives?
hass-opnsense - OPNsense integration with Home Assistant