HVAC measurements for better indoor environments Reliability is a priority in building automation systems, and Vaisala’s HVAC sensors and transmitters are built to perform. Download Vaisala HVAC ebook Premium sensors and transmitters for professional use You will find humidity, temperature, carbon dioxide, and differential pressure transmitters in our selection of high-class measurement instruments. The transmitters are especially beneficial in cooling and air-conditioning of critical infrastructures, demand-controlled ventilation systems, indoor air quality monitoring, and ventilation controls of sites with high-reliability requirements. Why choose Vaisala HVAC measurements? Unrivaled performance. Transmitters from Vaisala are renowned for their unrivaled performance, reliable results, and low total cost of ownership. 5-year warranty. We are confident in our products' lasting quality and long lifetime and offer a standard warranty period of five years on our HVAC transmitters. A sustainable choice. The long-lasting performance, support for field calibration, easy maintenance, exchangeable measurement components, and precise measurements enable better control of HVAC processes. Browse products Vaisala's reliable and accurate HVAC meters and sensors are designed with energy efficiency in mind, whether you are optimizing cooling towers or demand-controlled ventilation. Our large selection includes ±3% and ±2% humidity and temperature measurement HVAC meters, CO2 measurement sensors and also handheld meters. They can be used indoors and outdoors, and installed on walls or in ventilation ducts. To see where our HVAC sensors can be used, enter the Vaisala HVAC House or view all our HVAC sensors at a glance. Enter Vaisala HVAC House Why Infosys chose Vaisala? Infosys, the second largest Indian IT-consulting company with 200,000 plus employees and revenue of over USD 10 billion, chose Vaisala’s HVAC sensors for its projects. “We find that Vaisala is unique with the 5-year stability specification for the HVAC products. In the last 3 years we have been using the products, we have received timely support from Vaisala and are quite satisfied with the product quality”, says Mr. Vikas Makkar, Regional Manager Infrastructure Team at Infosys. Photo: Courtesy of Infosys. READ THE COMPLETE CUSTOMER STORY Download Vaisala HVAC eBook Download the brand new Vaisala HVAC eBook and explore our HVAC instruments and services offering. Learn how to choose the right parameters and sensors for HVAC control. Get tips on how to install HVAC sensors. Read what our customer say about our HVAC sensors Find out about our calibration services Watch free webinars Explore the FAQ’s section. Download Vaisala HVAC eBook Easy Installation of HVAC Sensors You have several HVAC meter options to choose from to best suit your needs. We have a wide selection of wall-mounted and duct-mounted HVAC meters for indoor and outdoor use. Which ever meter, sensor or transmitter you choose, they are all easy to install and require very little maintenance. Watch video on how to install the Humidity and Temperature Transmitter Series HMW90 sensor and see how fast and easy it is. VIEW ALL VAISALA HVAC SENSORS CARBOCAP® Technology inside Vaisala uses a single-beam and dual-wavelength NDIR (Non-dispersive infrared) technology for measuring CO2, The patented CARBOCAP® technology is used in all our CO2 sensors. This technology incorporates a unique tunable band pass filter that was developed by Vaisala and is manufactured in our own state-of-the-art cleanroom. View this video to find out why it's unique and why it makes the Vaisala CO2 measurement the most reliable and accurate one on the market or learn more on our carbon dioxide page. Explore Application Examples Demand-controlled ventilation Indoor air quality (IAQ) Outdoor measurements in building operations Data centers Museums, archives and libraries Construction material manufacturing Metro stations Structural Moisture Measurements HVAC product highlights Immersion Temperature Transmitter TMI110 The high-accuracy immersion temperature transmitter TMI110 is designed for measuring cooling/heating water temperatures in HVAC automation systems. Read more Weather Transmitter WXT530 Series The perfect mix of accurate air pressure, temperature, humidity, rainfall, wind speed, and wind direction data to measure weather conditions without the expense or magnitude of an automatic weather station. Read more Jade Smart Cloud Combining industrial-grade measurements with secure and reliable wireless monitoring, Vaisala Jade Smart Cloud brings new levels of proficiency and flexibility for professionals. Read more Humidity and Temperature Transmitters HMT120/130 The Vaisala HUMICAP® HMT120 and HMT130 transmitters are suitable for cleanrooms, museums, laboratories and data centers. Read more CO2, Temperature and Humidity Transmitter Series GMW90 The wall-mounted Vaisala GMW90 Series CARBOCAP® Carbon Dioxide, Temperature and Humidity Transmitters are especially suited for green building projects and demand controlled ventilation. Read more Humidity and Temperature Transmitter Series HMW90 Typical applications are include museums and archives, production and warehouse facilities, data centers, laboratories, and testing environments. Read more Duct Humidity and Temperature Transmitter HMD60 The sturdy and reliable duct mounted Vaisala HUMICAP® Humidity Transmitter Series HMD60 is designed for monitoring relative humidity in demanding HVAC and light industrial applications Read more Download HVAC product brochure Vaisala HVAC transmittersThe unique, cutting-edge Vaisala sensor technologies are manifested throughout our versatile range of products. The accuracy and long-term stability of Vaisala sensors are absolutely the best of class within the industry.Download brochure Watch HVAC related webinars Webinar How to measure outdoor humidity in HVAC applications Evaporative cooling and economizers are widely used and also required by some standards. However, not all humidity sensors are suitable for this type of measurement. Register to watch Webinar Paradigm shift in building ventilation: Future requirements for Demand Controlled Ventilation and Indoor Air Quality From productivity to health and safety, properly executed ventilation can help improve conditions for building occupants who spend significant amounts of time indoors. Register to watch Webinar Plan of Action: Calibration resources to optimize measurement performance As with all precision instrumentation, environmental and process measurement sensors are not maintenance-free, and require service to ensure that they provide reliable and accurate data. Register to watch Webinar Data Center Innovation: The importance of accuracy to maximize energy efficiency In this webinar, Michael Gantert from Munters and Anu Kätkä from Vaisala will discuss the importance of measurement accuracy to maximize energy efficiency of data centers. Register to watch Webinar How to choose the right humidity parameter for humidity control in HVAC systems Many people working in the HVAC field know about relative humidity (RH) as a parameter used in HVAC controls. Relative humidity, however, is not always the best option as a control parameter. At times there are other choices that will make the conditions more stable or the system commissioning easier. Register to watch Webinar Future of Ventilation: Viewpoints on Air Quality, Health Security and Sustainability Join the webinar to watch the expert discussion on what are the most effective methods to reduce HVAC energy consumption while improving the quality of indoor air. Register to watch Most popular HVAC blogs and articles Blog Why Do We Measure CO₂ in HVAC Applications? Heating, ventilation, and air conditioning (HVAC) is typically not considered a challenging application area when it comes to CO₂ sensors. While it’s true that ambient conditions are mostly benign, sensors still need to be reliable, easy to maintain, and offer long-term measurement stability. Learn more Blog Common pitfalls when installing HVAC duct sensors This is the second in a series of three blog posts looking at common pitfalls when installing HVAC sensors, focusing on physical measurement errors that are caused by incorrect installation. This post focuses on common installation errors for HVAC duct sensors. Learn more Blog Relative Humidity – What Is It And Why Is It Important? By far the biggest reason to monitor relative humidity is to control moisture around a final product. In most cases this means making sure that the RH never rises too high. Learn more Blog What Causes Drift in Relative Humidity Sensors? All gases in the environment will interact with a humidity sensor and potentially cause drift. Water needs to get in and out of the sensor, which means that other gases can too. In general, any strong smell is a warning sign that something is evaporating. Learn more
HVAC product highlights Immersion Temperature Transmitter TMI110 The high-accuracy immersion temperature transmitter TMI110 is designed for measuring cooling/heating water temperatures in HVAC automation systems. Read more Weather Transmitter WXT530 Series The perfect mix of accurate air pressure, temperature, humidity, rainfall, wind speed, and wind direction data to measure weather conditions without the expense or magnitude of an automatic weather station. Read more Jade Smart Cloud Combining industrial-grade measurements with secure and reliable wireless monitoring, Vaisala Jade Smart Cloud brings new levels of proficiency and flexibility for professionals. Read more Humidity and Temperature Transmitters HMT120/130 The Vaisala HUMICAP® HMT120 and HMT130 transmitters are suitable for cleanrooms, museums, laboratories and data centers. Read more CO2, Temperature and Humidity Transmitter Series GMW90 The wall-mounted Vaisala GMW90 Series CARBOCAP® Carbon Dioxide, Temperature and Humidity Transmitters are especially suited for green building projects and demand controlled ventilation. Read more Humidity and Temperature Transmitter Series HMW90 Typical applications are include museums and archives, production and warehouse facilities, data centers, laboratories, and testing environments. Read more Duct Humidity and Temperature Transmitter HMD60 The sturdy and reliable duct mounted Vaisala HUMICAP® Humidity Transmitter Series HMD60 is designed for monitoring relative humidity in demanding HVAC and light industrial applications Read more
Immersion Temperature Transmitter TMI110 The high-accuracy immersion temperature transmitter TMI110 is designed for measuring cooling/heating water temperatures in HVAC automation systems. Read more
Weather Transmitter WXT530 Series The perfect mix of accurate air pressure, temperature, humidity, rainfall, wind speed, and wind direction data to measure weather conditions without the expense or magnitude of an automatic weather station. Read more
Jade Smart Cloud Combining industrial-grade measurements with secure and reliable wireless monitoring, Vaisala Jade Smart Cloud brings new levels of proficiency and flexibility for professionals. Read more
Humidity and Temperature Transmitters HMT120/130 The Vaisala HUMICAP® HMT120 and HMT130 transmitters are suitable for cleanrooms, museums, laboratories and data centers. Read more
CO2, Temperature and Humidity Transmitter Series GMW90 The wall-mounted Vaisala GMW90 Series CARBOCAP® Carbon Dioxide, Temperature and Humidity Transmitters are especially suited for green building projects and demand controlled ventilation. Read more
Humidity and Temperature Transmitter Series HMW90 Typical applications are include museums and archives, production and warehouse facilities, data centers, laboratories, and testing environments. Read more
Duct Humidity and Temperature Transmitter HMD60 The sturdy and reliable duct mounted Vaisala HUMICAP® Humidity Transmitter Series HMD60 is designed for monitoring relative humidity in demanding HVAC and light industrial applications Read more
