The Passiv Smart Thermostat is the smart way to control a heat pump
Moved in to a home with the Passiv Smart Thermostat?
Welcome to smarter heating
The Passiv Smart Thermostat makes keeping warm with a heat pump simple and can reduce your bills by 30%.
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Save more with the app
Control your heating and hot water from anywhere with the free Passiv app. Download the app today to unlock the greatest bill savings and see how your heat pump is performing.
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Need help with something?
Our online support pages provide a comprehensive set of FAQs to guide you through everything you need to know to use the Passiv Smart Thermostat.
Get support >Why choose the Passiv Smart Thermostat?
The free Passiv app is the easiest way to control a heat pump - use the app to quickly and conveniently manage heating and hot water from anywhere.
The Passiv Smart Thermostat learns how a home heats up and cools down. It uses local weather forecasts to start heating a home and hot water at exactly the right time to make keeping comfortable with a heat pump simple.
With RS485 Modbus control, the Passiv Smart Thermostat continuously optimises a heat pump’s flow temperature to maximise its COP. The Energy Saving Trust has verified that this increases the efficiency of a heat pump by 17%.
The Passiv Smart Thermostat can optimise a heat pump to consume cheap electricity from time-of-use energy tariffs and supports smart tariffs from the UK’s leading energy suppliers. It can also optimise a heat pump to consume free electricity from rooftop solar panels without any additional monitoring equipment.
Meet the Passiv Smart Thermostat
Control a heat pump from anywhere with the Passiv app
Control a heat pump from anywhere with the Passiv app
Make the most of the sun with solar optimisation
For homes with rooftop solar panels, the Passiv Smart Thermostat can also optimise a heat pump to make the most of any free solar generation.
This doesn’t require any additional metering or monitoring equipment. The Passiv Smart Thermostat forecasts the amount of electricity that solar panels will export back to the electricity grid using information about a solar installation entered in the Passiv app and a local weather forecast.
No internet? No problem!
How the Passiv Smart Thermostat works
Connect the Passiv Hub to a broadband router using the supplied ethernet cable.
Download the Passiv app from the App Store or Google Play. Create a Passiv account and follow the simple onboarding instructions to get started.
Set up heating and hot water schedules in the Passiv app. Enable ecoHeat for the best savings and enter tariff and solar details in the app settings.
The Passiv Smart Thermostat learns how a home heats up and cools down, how the heating system performs and how a home reacts to the outside temperature and weather.
It then uses local weather forecasts to calculate the optimal way to meet comfort requirements, continuously optimising the heat pump to maximise its efficiency and lower heating bills.
Sit back and enjoy perfect comfort and lower heating bills!
Passiv Smart Thermostat FAQs
With ecoHeat on, the Passiv Smart Thermostat will run your heat pump outside of your schedule periods to preheat your home and hot water so that your scheduled temperatures are always met and you have the hot water that you need.
This is the best way to control your heat pump and with RS485 Modbus control, increases its efficiency by 17%. A more efficient heat pump means lower heating bills!
The Passiv Smart Thermostat can control a heat pump via RS485 Modbus or relay. Control via RS485 Modbus is possible with many leading heat pump brands and delivers the best level of bill savings, including increasing the efficiency of a heat pump by 17%.
Control via relay is possible with all heat pump makes and models. With relay control, the Passiv Smart Thermostat will only control space heating and not hot water.
The chosen control method will impact how the Passiv Smart Thermostat is installed and the functionality available on the Passiv app, Thermostat and Programmer. Visit our Help Centre to find out more.
The Passiv Smart Thermostat can control a heat pump via RS485 Modbus or relay.
Control via RS485 Modbus is possible with many leading heat pump brands and delivers the best level of bill savings, including increasing the efficiency of a heat pump by 17%.
Control via relay is possible with all heat pump makes and models. With relay control, the Passiv Smart Thermostat will only control space heating and not hot water.
No! Unlike many other smart thermostats, every feature of the Passiv Smart Thermostat is included for free. There are no ongoing charges for using the Passiv Smart Thermostat.
Yes, you can do this by turning ecoHeat off. With ecoHeat off, the Passiv Smart Thermostat will operate like a traditional boiler thermostat.
The Passiv Smart Thermostat comes with default heating and hot water schedules however these can be deleted at any time. With an empty schedule the Passiv Smart Thermostat will effectively act like a room thermostat.
The Passiv Smart Thermostat is only available to purchase from our Partners and must be professionally installed. Please get in touch with an installer in your area and they can purchase the Passiv Smart Thermostat from a local distributor.
The Passiv Help Centre is available 24/7 and is the quickest way to get support.
If you still need to get in touch with us, please visit the Contact page for more information.