Room Thermostats

thermostats, thermostat, smart thermostat, fan coil unit, fan coil, fcu hvac, communicating thermostat, non communicating thermostat, RDS 120, RDS 120.B, RDB160BNU

Thermostats for maximum comfort and energy efficiency

The Siemens line of room thermostats offer a range of products for simple to more complex buildings designed to optimize building efficiency and achieve more energy savings. Effortless building operations is made easy with basic climate control to advanced BACnet integration into building automation systems turning complete room control into a reality. Our thermostats are engineered for effortless installation, easy operation and reliability which leads to fewer call backs.

View this brochure for complete information on our thermostats.  Download now

RDB160BNU Communicating Fan Coil Unit Thermostat

New Product: Communicating Fan Coil Thermostat Improves Indoor Air Quality

Control comfort and protect against mold at a better value with Siemens fan coil thermostat. The mold protection feature improves indoor air quality and helps eliminate mold growth and damage from moisture due to a lack of air circulation.  

Powerful solutions for a broad range of thermostat applications

AHR Expo 2022

See what we have planned for AHR Expo 2022

If you’re planning on attending the AHR Expo at the Las Vegas Conventions Center, stop by booth #C1540 in the Central Hall and discover how we’re making smart buildings real.


Cover photo of the HVAC Catalog PDF with a range of products displayed and the title "HVAC Components and Controls Catalog Edition 10.0."

NEW: Siemens HVAC Interactive Digital Catalog 10.0

Find the right HVAC device to make your perfect place a reality.​ Discover the essential product details you need to make the right product selection by downloading the Siemens HVAC catalog today.

Energy Efficiency Directory

Powerful incentives. Impressive savings.

No matter the size of your business, you can take advantage of incentives on HVAC equipment that help you save money and achieve your energy efficiency goals.


Energy Efficiency Rebates: Don’t miss out on local rebates and tax incentives that help reduce the overall expense of installing new HVAC equipment.


QIP Tax Deduction: Qualified interior improvements made by the taxpayer for existing non-residential buildings may be eligible for a tax deduction of the full amount of equipment and labor costs in a single year, without limitation on the size of the project.​

RDS120 Smart Thermostat Understands Your Needs

Siemens original Smart Thermostat was developed to provide professional control and operation of heating and cooling applications. Its clean design fits every interior. It is always in touch with its surroundings thanks to the six powerful and accurate sensors: temperature, humidity, light, proximity, presence and organic particle detection. Because all the sensors are integral to the Smart Thermostat, there is no additional wiring or programming. These sensors allow the Smart Thermostat to be fully autonomous.

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Building Technologies Blog Center

Read forward thinking perspectives from subject-matter experts on HVAC related topics we know you care about. Articles ranging from HVAC products, to energy efficiency, indoor air quality and more.

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Understanding your needs

Smart Thermostats Provide Elegant Room-Level Control

Operation Is Easy With or Without the Application

The Smart Thermostat can be operated either directly on the thermostat touchscreen or with the highly-intuitive Smart Thermostat app. The app enables full control and monitoring of your Smart Thermostat from anywhere, any time with a mobile device. Key functionalities of the app include scheduling, setting “home” and “away” modes, humidity control, indoor air quality monitoring, and the Green Leaf indicator for energy-efficient operation. This makes control of the Smart Thermostat fast and easy.

How-to Videos

We trust in the quality of our products.

Siemens offers a 5-year warranty on valves, actuators, damper actuators, sensors, thermostats and meters.

Technical Programs and Specification Resources

Service and Quick Reference Guides

The Siemens Field Support team provides full technical support. Our Quick Reference Guides include more detailed product information and related links.