Start installing the Passiv Smart Thermostat today
Available from plumbers' merchants and renewable distributors across the UK.
For Installers

Plumb Centre is the UK's largest trade specialist in heating, bathrooms and plumbing.
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Plumbase is a national merchant providing a range of heating, plumbing and bathroom supplies.
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Graham is a leading plumbers' merchant supplying heating, plumbing and bathroom products.
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UK Plumbing Supplies is the UK's largest independent plumbers' merchant with over 300 locations.
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Wolseley operates 400 plumbing and heating branches, including Plumb Centre and Renewables Centre.
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Secon Renewables is a leading distributor of heat pumps and renewable energy products to trade installers across the UK.
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Ultimate Renewables is a designer and supplier of heat pump solutions for installers and merchants.
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Robus Energy is a national distributor of renewable heating products for merchants across the UK.
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Professional installation is required for the Passiv Smart Thermostat. Use our quick online form to find a local installer, or choose from our trusted national partners.
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Frequently Asked Questions
The Passiv Smart Thermostat is the only smart thermostat designed for heat pumps. It makes comfort simple while reducing energy bills by up to 30%, optimising heat pumps according to the weather, energy tariffs and solar generation.
For installers, the Passiv Smart Thermostat removes the need to set a weather compensation curve. Instead, it dynamically controls the flow temperature to deliver perfect comfort and maximum efficiency.
Yes! The Passiv Smart Thermostat has been designed to be used by everyone, no matter how tech-savvy they may be. The Passiv Thermostat, Programmer and app have a simple, intuitive user interface that make them easy to understand and use.
Unlike other smart thermostats, the Passiv Smart Thermostat provides full control of heating and hot water without a smartphone or internet connection. The Passiv Programmer’s rich colour screen can be used to create, edit and delete schedules, boost your hot water or turn on Away mode.
The Passiv Smart Thermostat has been designed to be simple to install and commission. It has several features to speed up heat pump installation including removing the need for an installer to set a weather compensation curve, a built-in, push-fit wiring centre, wired or wireless thermostats and the ability to commission the system from the Passiv Programmer in under two minutes without the need for a smartphone or internet connection.
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.
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.