City sky

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.
HVAC green building

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.

HVAC house

Large selection of HVAC sensors

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.

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.

HVAC eBook cover

Download Vaisala HVAC eBook

Download the 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.

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.

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 COmeasurement the most reliable and accurate one on the market or learn more on our carbon dioxide page.

GMD110

Duct CO2 Transmitter GMD110

The duct-mounted high-accuracy transmitter GMD110 is designed to measure carbon dioxide in demanding HVAC applications.

The Vaisala PDT101 differential pressure transmitter is designed for differential pressure monitoring in regulated environments.

Differential Pressure Transmitter PDT101

The PDT101 differential pressure transmitter is designed for demanding applications. There are dedicated models for critical and regulated environments with very low differential pressures, and unidirectional models for air handling systems.

HVAC Product Brochure

Download HVAC product brochure

Vaisala HVAC transmitters

The 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

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.

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.

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.

E-mail Facebook Twitter LinkedIn