Heat pump control for SAPAC and i-regul

See and steer a SAPAC heat pump from Home Assistant, with the same serial number and password you use in the i-regul connect app.

What it does

See how the heat pump is doing: temperatures, pressures, flow, power and efficiency (COP).
Follow the energy used for heating, hot water, cooling and defrosting. It works with the Home Assistant Energy dashboard.
Set the target temperature of each heating zone and switch between auto, comfort, eco and away.
Control the hot water tank: its target temperature and modes, including the electric backup heater.
Allow or stop heating and cooling, acknowledge an alarm or start a defrost with one tap.
Start from a ready-made dashboard with an overview page and an energy page.

Add it through HACSUse the button on this page, download the integration and restart Home Assistant.
Add the integrationIn Home Assistant, go to Settings, then Devices & services, and add WattKeeper - i-regul.
Enter your detailsType the serial number and password from i-regul connect. Your heat pump appears with its sensors and controls.

It talks to the i-regul cloud, not directly to the heat pump. If their server is slow or offline, values can lag or show as unavailable.
Data travels unencrypted, exactly as it does with the official i-regul connect app.
By default it checks every 5 minutes, which keeps the load on the i-regul server low.
The heat pump heats water only up to the installer’s maximum (55 °C on a Mistral Compact). Above that, the electric backup heater takes over, with its own setting.
The guide on GitHub is written in French.
This is an independent project, not affiliated with i-regul or SAPAC. Use it at your own risk.