Achieve the Ideal Indoor Temperature with Intelligent Control & Energy Efficiency
Siemens thermostats and programmable thermostats provide reliable and energy-efficient heating and cooling control for residential, commercial and industrial buildings of all sizes. Effective temperature management plays a key role in reducing energy consumption, improving occupant comfort and lowering overall operating costs.
Siemens offers a comprehensive range of room thermostats, programmable thermostats and HVAC control solutions that combine modern design, high precision and advanced energy-saving functionality. These solutions form an integral part of modern Building Automation systems, Building Management Systems (BMS) and Building Energy Management Systems (BEMS), helping create smarter, more sustainable and energy-efficient buildings.
By optimising heating and cooling performance, Siemens thermostats help reduce the consumption of oil, natural gas and electricity while lowering CO₂ emissions and minimizing the environmental impact of the building. The result is enhanced comfort, improved operational efficiency and long-term energy savings.
Siemens Thermostats for Homes, Hotels and Commercial Buildings
Siemens thermostat ranges are designed to meet a wide variety of heating, ventilation and air conditioning (HVAC) requirements, serving residential properties, hotels, office buildings, retail facilities and industrial applications.
Renowned for their reliability, precision control and long service life, Siemens thermostats are an ideal choice for Building Automation projects and integrated energy management systems. Manufactured to stringent international quality standards, they deliver outstanding performance, operational efficiency and long-term value for building owners and operators.
With more than 70 years of expertise in HVAC controls and building automation, Siemens has established itself as a trusted leader in intelligent building technologies. Its solutions help improve occupant comfort, enhance energy efficiency and support the development of smarter, more sustainable buildings.
Explore the complete Siemens thermostat range, including room thermostats, programmable thermostats, fan coil thermostats, boiler room thermostats and remote heating control solutions designed for efficient HVAC operation and energy management.
Siemens REV programmable thermostats provide intelligent, reliable and energy-efficient heating control, ensuring a stable indoor temperature, enhanced comfort and significant energy savings.
Thanks to advanced Siemens technology, REV thermostats automatically adapt to the specific characteristics of the space in which they are installed. They precisely regulate the operation of the heating system, minimise temperature fluctuations and help reduce fuel consumption and operating costs.
The REV range combines ease of use with modern functionality:
- Simple adjustment through an intuitive slider.
- User-friendly menu for quick and easy operation.
- Clear backlit display.
- High-precision temperature control.
- Remote control capability via telephone modem.
Siemens REV smart programmable thermostats are the ideal solution for residential applications and environments where comfort, precision and efficient energy management are essential.
The Secret to Energy Savings Lies in the Thermostat
By replacing an old analogue or basic digital thermostat with a Siemens REV programmable thermostat, you benefit from:
- A more stable indoor temperature and greater comfort.
- Lower energy consumption and reduced heating costs.
Siemens’ advanced Self-Learning technology adapts to the thermal characteristics of the room and controls the heating system with high precision. Unlike conventional mechanical thermostats, it helps minimise temperature fluctuations and unnecessary fuel consumption.
The result is more efficient heating control, improved energy management and noticeable energy savings from the very first days of operation.
Intelligent Heating Control for Greater Comfort & Energy Efficiency
The Siemens RDD100.1 and RDE100.1 series represents a new generation of room thermostats and programmable thermostats, combining modern design, intuitive operation and outstanding energy efficiency. Designed for residential properties, apartments, commercial buildings and hospitality applications, these thermostats provide precise temperature control while helping reduce energy consumption and operating costs.
Featuring touch-button operation and a large, easy-to-read display, the RDD100.1 and RDE100.1 thermostats allow users to adjust temperature settings and heating schedules quickly and effortlessly. The advanced scheduling and holiday functions available on the RDE100.1 models ensure that heating operates only when required, delivering maximum comfort with minimum energy usage.
Advanced Energy-Saving Features
The Siemens RDE100.1 programmable thermostats include advanced functions designed to improve comfort and optimise energy performance:
- Floor temperature limitation for underfloor heating systems, allowing a maximum floor temperature to be set for enhanced comfort and floor protection.
- Window contact input, which automatically switches the thermostat to energy-saving mode when a window is opened.
- Weekly scheduling programmes for precise heating control based on occupancy patterns.
- Holiday mode, helping reduce energy consumption during periods of absence.
These features make the RDE100.1 range an excellent choice for modern heating systems and energy-efficient building applications.
Key Features
- Elegant and modern design.
- Large, clear display.
- Easy installation and user-friendly operation.
- Models available with or without programmable schedules.
- Wired and wireless versions operating at 433 MHz.
- Ideal for wall-mounted gas boilers.
- Accurate room temperature control.
- Improved energy efficiency and reduced heating costs.
Product Range
- RDD100.1: Electronic room thermostat with display.
- RDD100.1DHW: Electronic room thermostat with domestic hot water control.
- RDD100.1RFS: Wireless electronic room thermostat with display.
- RDE100.1: Weekly programmable thermostat with display.
- RDE100.1DHW: Weekly programmable thermostat with domestic hot water control and scheduling functions.
- RDE100.1RFS: Wireless weekly programmable thermostat with display.
The Siemens RDD100.1 and RDE100.1 thermostat range is an ideal solution for users seeking reliable room temperature control, improved comfort and enhanced energy efficiency in residential and commercial heating applications.
Reliable Heating Control with Comfort & Energy Efficiency
The Siemens RDH100 and RDJ100 thermostat range is the ideal choice for users looking for reliable, easy-to-use and cost-effective room temperature control. Combining a classic design with simple operation and precise performance, these thermostats help improve heating efficiency, reduce energy consumption and lower operating costs.
Designed for residential and light commercial applications, Siemens RDH100 and RDJ100 thermostats provide dependable temperature control, enhanced comfort and reliable day-to-day operation for a wide range of heating systems.
Simple Operation & Practical Functionality
The large, easy-to-read display allows clear visibility from a wide viewing angle, while the ergonomically designed rotary control enables quick and convenient temperature adjustment.
The RDH100 and RDJ100 series combines user-friendly operation with energy-efficient performance, making it a practical and economical solution for everyday heating control.
Key Benefits
- Large, clear display with easy-to-read symbols and values.
- Simple temperature adjustment and intuitive operation.
- Quick installation and reliable performance.
- Models available with or without programmable scheduling.
- Wired and wireless versions operating at 433 MHz.
- Ideal for wall-mounted gas boilers.
- Accurate room temperature control.
- Improved energy efficiency and reduced heating costs.
Product Range
- RDH100: Electronic room thermostat with display.
- RDH100RF/SET: Wireless electronic room thermostat with display.
- RDJ100: Electronic daily programmable thermostat with display.
- RDJ100RF/SET: Wireless electronic daily programmable thermostat with display.
The Siemens RDH100 and RDJ100 range offers a reliable and affordable solution for efficient heating control, improved indoor comfort and energy savings in homes, apartments and commercial environments.
Modern Design & Reliable Heating Control
The Siemens RDD310 and RDE410 range combines modern aesthetics, reliable performance and precise temperature control, making it an ideal solution for homes, hotels, office buildings and other commercial applications.
Featuring a slim profile, elegant design and backlit display, these flush-mounted thermostats integrate seamlessly into modern interiors while providing simple operation and efficient heating control. By maintaining accurate room temperature regulation, they help improve occupant comfort and support energy-efficient building operation.
The RDD310 and RDE410 series offers a dependable solution for modern heating systems, delivering long-term reliability, improved energy efficiency and enhanced indoor comfort.
Key Features
- Modern flush-mounted design.
- Slim and elegant appearance.
- Backlit, easy-to-read display.
- Precise room temperature control.
- Simple installation and operation.
- Improved energy efficiency.
- Suitable for residential and commercial applications.
Product Range
- RDD310: Flush-mounted electronic room thermostat.
- RDE410/SET: Flush-mounted electronic programmable room thermostat.
Reliable & Affordable Temperature Control
The Siemens RAA range of electromechanical thermostats provides a reliable and cost-effective solution for controlling heating and cooling systems in residential, commercial and public buildings. Based on gas-filled diaphragm technology, these thermostats deliver dependable temperature control, long service life and consistent performance.
Combining simple operation, modern design and easy installation, the RAA series is ideal for applications requiring straightforward and efficient room temperature control. Selected models also include domestic hot water control functionality, providing additional flexibility and convenience.
Key Benefits
- Reliable electromechanical operation.
- Gas-filled diaphragm sensing technology.
- Simple temperature adjustment.
- Easy installation and operation.
- Durable construction and long service life.
- Suitable for heating and cooling applications.
- Cost-effective solution for residential and commercial environments.
Main Models
- RAA31.16: Electromechanical thermostat for heating applications with ON/OFF switch and operating indicator light.
- RAA31.26: Electromechanical thermostat with additional domestic hot water control, featuring two ON/OFF switches and two indicator lights.
- RAA41: Electromechanical thermostat for heating and cooling applications.
- RAA11: Electromechanical thermostat for heating and cooling applications with internal temperature adjustment, ideal for public buildings, hotels and areas where restricted user access is required.
Energy-Efficient Heating & Cooling Control
Siemens RDG, RDF, RCC and RAB thermostats provide reliable and energy-efficient temperature control for fan coil units and a wide range of heating, ventilation and air conditioning (HVAC) applications. They are ideal for homes, hotels, hospitals, offices and commercial buildings, delivering improved comfort, intuitive operation and reduced energy consumption.
RDG & RDF Ranges for Optimum Indoor Comfort
The RDG and RDF ranges include modern electronic wall-mounted and flush-mounted thermostats with clear backlit displays.
They support both ON/OFF and modulating control for a variety of HVAC applications, including:
- Two-pipe and four-pipe fan coil systems.
- Chilled ceilings.
- Variable air volume (VAV) systems.
- Heat pumps.
- Radiators and other heating and cooling applications.
The required application can be selected quickly and easily using DIP switches. Intelligent functions, such as automatic fan-speed control, help maintain the desired room temperature while improving energy efficiency and occupant comfort. Selected models are available with weekly scheduling, KNX communication and remote control via infrared handset. This allows them to be integrated into modern Building Automation solutions and Building Management Systems (BMS).
RDG Thermostat Range
- RDG110: Multi-application thermostat with SPDT relay outputs, ideal for ON/OFF control of two-pipe and four-pipe fan coil systems.
- RDG 100: Multi-application thermostat with ON/OFF and pulse-width modulation outputs.
- RDG 100T: Multi-application thermostat with a seven-day time schedule, the same core functionality as the RDG100 and an infrared receiver for remote control.
- RDG140: Modulating thermostat with AC 24 V operating voltage and a DC 0–10 V output.
- RDG160: Modulating thermostat for ECM fan-speed control, with AC 24 V operating voltage and DC 0–10 V outputs for valve or fan control.
RDF, RCC & RAB Ranges
The RDF, RCC and RAB ranges include electronic and electromechanical thermostats for two-pipe and four-pipe fan coil systems, with or without a display. They provide a reliable and cost-effective solution for residential and commercial HVAC applications.
Depending on the model, available functions include:
- Electronic room temperature measurement and precise control.
- Automatic heating and cooling changeover based on water temperature.
- Automatic fan-speed selection.
- Window-contact input for enhanced energy savings.
- Quick and straightforward installation.
Siemens fan coil thermostats combine high-quality construction, modern design and intelligent control functions, helping improve indoor comfort and support efficient building energy management.
Reliable Temperature Control for Heat Generation & Distribution Systems
Siemens RAK and RAZ boiler room thermostats provide dependable temperature control and enhanced operational safety for heat generation and distribution systems. They are suitable for boiler rooms, heating installations, air ducts, underfloor heating systems and other HVAC applications requiring precise and reliable temperature regulation.
The RAK/RAZ range includes control thermostats, safety limit thermostats, dual thermostats, duct thermostats and safety thermostats for underfloor heating systems. The portfolio also includes multi-purpose models that can be used as strap-on, immersion or remote-sensing thermostats, offering greater installation flexibility.
Technical Features
- Combined strap-on and immersion thermostat design.
- IP43 protection rating.
- DIN-compliant design for up to 250,000 operating cycles.
- SPDT changeover contact.
- Suitable for applications with temperatures up to 130°C.
Key Benefits
- Manual reset without removing the cover.
- Easy installation and straightforward replacement.
- Clear and easy-to-read setting scale.
- Reliable performance in demanding heating applications.
- Suitable for boiler room control and safety functions.
Siemens RAK and RAZ boiler room thermostats offer a reliable solution for safe operation, accurate temperature control and efficient management of heating and HVAC systems.