HVAC House

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.

Vikas Makkar, Regional Manager Infrastructure Team at Infosys

Why Choose 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.

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.

Watch the video

Installation of a Vaisala HVAC Sensor

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.

Member of BACnet Interest Group

Member of BACnet Interest Group

The global BACnet standard is the only vendor-independent communication protocol for building automation. Visit BACnet website to learn more. 

BSRIA Member Logo

Member of BSRIA

Member of BSRIA, a UK-based testing, instrumentation, research and consultancy organisation, providing specialist services in construction and building services engineering.

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Vaisala CARBOCAP Technology

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.

Related Products

Indigo 200 with a carbon dioxide probe GMP251 in a greenhouse.

Indigo 200 Series Transmitters

for Vaisala's Smart Humidity, Temperature, Dew Point, Moisture in Oil, CO2 and H2O2 Probes
Vaisala Indigo 200 Series host devices are part of Vaisala Indigo product family and intended for Vaisala's intelligent, stand-alone humidity probes...
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Insight PC Software

for easy access to Indigo compatible probes
Vaisala Insight PC Software gives quick access to the configurations and data of the Indigo family measurement probes: humidity measurement smart...
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CO₂ Probe GMP252

for ppm-level measurements in agriculture, refrigeration, demanding HVAC, and for plant growth manufacturers
The Vaisala CARBOCAP® Carbon Dioxide Probe GMP252 is an intelligent, stand-alone, ppm-level probe. It's intended for measuring CO2 in agriculture...
HMP3  probe head and body

Humidity and Temperature Probe HMP3

for General Purpose Humidity and Temperature Applications with Exchangeable Sensor
Vaisala HUMICAP® Humidity and Temperature Probe HMP3 is a general-purpose probe designed for processes with moderate humidity and temperature levels...
HMD60 series transmitters

Humidity and Temperature Transmitters HMD60

±1.5%RH Transmitters for Demanding HVAC, with a Certificate
The sturdy and reliable duct mounted Vaisala HUMICAP® Humidity Transmitter Series HMD60 is designed for monitoring relative humidity in demanding HVAC...
HMT120/130 Humidity and Temperature Transmitters

Humidity and Temperature Transmitters HMT120/130

±1.5%RH Transmitters with Exchangeable Probes for Cleanrooms and Light Industrial Applications
The Vaisala HUMICAP® HMT120 and HMT130 transmitters are suitable for cleanrooms, museums, laboratories and data centers. Maintaining measurement...
HMP110 with a cable

Humidity and Temperature Probe HMP110

with ±1.5%RH Accuracy for Demanding Volume Applications
The Vaisala HUMICAP® Humidity and Temperature Probe HMP110 is a trouble-free and cost-effective humidity transmitter with high accuracy and good...
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Handheld CO₂ Meter GM70

for Spot-Checking Applications
The Vaisala CARBOCAP® Hand-held Carbon Dioxide Meter GM70 measures volume concentration of CO2 in the units of ppm or %. It is a user-friendly meter...
GM20 Series Carbon Dioxide Transmitters

CO₂ Transmitter Series GM20

for Demand Controlled Ventilation
The duct-mounted Vaisala CARBOCAP® Carbon Dioxide Transmitter Series GMD20 are specially designed for demand-controlled ventilation (DCV). They are...

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