Heating and cooling account for the largest share of energy use in most homes. Yet for many homeowners, climate control still means manually adjusting a thermostat and hoping for the best. A KNX smart home changes that entirely.
With the right HVAC controls, your home learns your routines, responds to the weather, and .keeps every room at the right temperature automatically and efficiently, without you having to think about it. Here are the best KNX products to make it happen.
Smart heating control for radiators and underfloor systems
The most impactful place to start is where you use the most energy: your heating system. KNX gives you precise, room-by-room control, whether you're heating through radiators, underfloor systems, or both.
The ise KNX RF Multi Radiator Thermostat is a wireless, battery-powered thermostat that fits directly onto existing radiator valves with no new cabling required. It integrates fully into your KNX system via a media coupler, works with ETS for configuration, and its battery lasts up to two years under typical conditions. A standout option for retrofitting smart heating into an existing home.
For underfloor heating and cooling systems, the ABB i-bus KNX Electromotor Valve Drive ST/K 1.2 offers an all-in-one solution: integrated controller, built-in temperature sensor, and KNX Data Secure encryption,
all powered directly through the KNX bus with no separate actuator needed. It supports both heating and cooling applications, making it a versatile option for both heating and cooling applications.
Bring your air conditioning into your KNX system
Air conditioning units are often the last device homeowners manage to integrate into a smart home setup, mainly because many air conditioning systems use proprietary control protocols or infrared communication rather than open automation standards. KNX solves this with dedicated gateways that bridge the gap.
The Intesis KNX Data Secure IR Gateway INKNXUNI001I200 is the first IR gateway to combine universal AC compatibility with full KNX Data Secure encryption. Its Autolearn function identifies your AC unit's IR codes automatically, enabling bidirectional communication, meaning your KNX system doesn't just send commands; it also receives feedback on the current state of your unit. Additional inputs allow integration with devices such as window contacts or occupancy sensors, an integrated temperature sensor, and supports up to 10 comfort and energy-saving scenes.
The result: your air conditioning becomes a fully integrated part of your smart home. It switches off when you open a window, adjusts when a room is empty, and follows your schedule, all without you lifting a finger.
A thermostat that looks as good as it works
Once your heating and cooling are connected to KNX, the device on your wall matters, both for performance and for how it fits into your home. The eelectron OL-U KNX Thermostat gets both right.
Winner of both the Red Dot Design Award 2024 and the German Design Award 2025, the OL-U is available in four material finishes: Lite, Regular, Fenix NTM® nanotechnology, and brushed aluminium Metal, making it one of the most versatile KNX thermostats for modern interiors. It fits directly into standard wall frames from BTicino, Vimar, AVE, Jung, Gira, and Merten, so it integrates seamlessly into whatever interior style you have.
The functionality matches the design. The OL-U comes with an integrated hygrometer and CO₂ sensor alongside the thermostat, providing real-time information about temperature, humidity, and CO₂ levels, not just temperature. It supports KNX Data Secure, is fully configurable in ETS, and with the myCustom portal you can even design your own custom icons for the capacitive RGB LED interface.
Your home, your climate, on your terms
Heating and cooling your home doesn't have to be a guessing game. With the right KNX controls, your system adapts to you, saving energy, improving comfort, and giving you a clear overview from a single interface.
Whether you're building from scratch or adding smart controls to an existing home, a certified KNX professional can help you choose and configure the right products for your setup.
