Indoor air quality (IAQ) directly impacts the comfort, health, and safety of your building’s occupants. Poor air quality management can lead to significant short and long-term health risks for occupants, as well as reduced productivity and concentration. Code compliance and legal scenarios also hang in the balance for a wide range of public and private indoor environments, such as educational facilities. Investing in precision air quality testing equipment helps ensure you are prepared.
According to the EPA definition, "Indoor Air Quality (IAQ) refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. Understanding and controlling common pollutants indoors can help reduce your risk of indoor health concerns."
In other words, IAQ is a description of how the air inside of your building is affecting the occupants' health, comfort, or ability to work.
Good IAQ is important for the health and safety of all occupants in your building. From a legal standpoint, compliance with all work environment regulations for IAQ will be essential to operating a safe and successful business. Business owners and building managers alike also understand the value of a comfortable environment. Attention to your air quality can support higher levels of productivity and employee (or resident) satisfaction. Healthy air and a well-managed indoor climate protects occupants from mold or other indoor air quality pollutants at the same time that it bolsters motivation, mood, wakefulness during the day, and restful sleep at night.
Indoor air quality improvements are possible with the right combination of smart HVAC management and additional indoor air quality solutions. For example, full-time air quality monitors placed in all occupied areas and other climate-sensitive environments (chemical storage, library archives, museum displays, animal habitats, etc.) will help you keep a close eye on IAQ metrics. The right indoor air quality sensors can track all of the necessary variables from temperature and RH to airflow measurement and the presence of harmful but odorless contaminants like CO2 or irritating VOCs.
Warnings from your sensors can alert you to take action or even automatically trigger your HVAC system to ensure a healthier, more productive environment. An indoor air quality sensor is not only about in-the-moment solutions, though. These sensors can gather data for insights into long-term trends. Armed with a continuous data model of your building’s IAQ, you can make informed decisions that will optimize your BAS for efficiency and your HVAC schedule for maximum occupant comfort.
Continuous IAQ testing will also give you critical insights into the health and maintenance needs of your building’s HVAC systems. Smart indoor air quality products not only alert you to substandard environments, but provide helpful feedback about the condition or effectiveness of the systems that are regulating it. The more data you have, the easier it will be to maintain compliance and comfort while saving time and money through preventative action.
We'll examine these solutions in more depth in the sections below.
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According to OSHA, the most common causes of subpar IAQ include:
Of further concern is the fact that many indoor air pollutants have no smell. It’s easy for substances like CO2 or irritating VOCs to develop undetected until occupants experience symptoms like headaches, fatigue, sleepiness, or other respiratory issues. If these side-effects have begun to appear, you may have a problem with IAQ.
Other factors can also play a role in the way your occupants feel about indoor air quality standards. For example, things like odors, inconsistent temperature, air pressure (drafts or stuffiness), added heat from unfiltered sunlight, and more can affect the comfort of the indoor environment and require remediation from air quality management systems.
Temperature and relative humidity are important to indoor comfort, but these factors are much easier to notice than many of the air pollutants that can threaten our health. According to the EPA, the 13 indoor air quality pollutants below are the most common threats. All of them fall into the categories of VOCs, biological pollutants, combustion byproducts, and legacy pollutants. Detection of these threats is important to keeping your occupants safe.
Properly maintained and updated ventilation, heating, and cooling systems are important. However, they’re only as useful as your ability to manage setpoints, automate a schedule, track performance, predict needs, and respond to deficiencies.
The best approach to measuring indoor air quality is to deploy an integrated network of indoor air quality sensors with a combination of RH, temperature, and VOC outputs in all sensitive locations. Comprehensive data from numerous indoor air quality monitor devices will help maintain a reliable environment. A safe, compliant, and comfortable indoor climate ensures that your building and its occupants will thrive.
Among other things, air quality sensors are used to:
With modern IAQ sensors, it’s even possible to remotely monitor indoor air quality and adjust fan, thermostat, or ventilation schedules from any location. A remote-enabled sensor system, such as the IAQ sensors made by Veris, makes your job easier and more efficient. You’ll be able to save on costs, prevent waste, minimize downtime, and meet compliance standards with a simple and highly compatible indoor air quality sensor system.
There are many types of indoor air quality sensors available to choose from, according to the specific threats or environmental traits you want to monitor. Here are four of the most common:
CO2 Sensors: Occupied but poorly ventilated areas can build up high levels of CO2 due to the breathing of the occupants over time. Use CO2 sensors to alert you when more ventilation is needed to keep the air fresh and CO2 levels low.
Temperature Sensors: A thermometer or thermostat is a temperature sensor. It generally measures air temperature in either Fahrenheit or Celsius (or both). Temperature sensors can be linked to building automation systems to trigger heating, cooling, and ventilation in response to temperature levels.
Humidity Sensors: Humidity sensors measure the presence of water in the air. Sometimes high level of humidity are mistaken for heat. Humid air can feel clammy or sticky, increasing the discomfort and sense that the room is too hot, like a humid summer day. Absolute humidity is a measure of the total water vapor in the air. Relative humidity (RH) is a measure of water vapor as a percentage of the maximum that the air could hold at its current temperature. RH is more important in how we feel temperature.
VOC Sensors: These sensors detect harmful particulates and volatile compounds in the air that are not easy to detect with our natural senses. A VOC sensor (or another sensor with VOC detection capabilities built in) is an important line of defense for IAQ.
Whereas temperature and humidity are easy to feel, gas emissions are difficult to detect—and can cause discomfort . It’s important to monitor the concentration of airborne pollutants with a carbon dioxide sensor, preferably with the ability to detect volatile organic compounds (VOCs), carbon monoxide, and nitrogen oxide as well. Here are a few priorities to set when evaluating CO2 wall mount sensors, duct CO2 sensors, and more:
An innovative CO sensor, NO2 sensor, CO/NO2 sensor or Refrigerant Sensor will drastically reduce project costs for critical environments like parking garages, sally ports, and similar structures. The remote CO2 sensors from Veris offer several important advantages. You’ll be able to tell instantly, from a distance, if you need to:
At the same time, Veris sensors give you incredible flexibility and compatibility with removable terminal blocks and the ability to integrate into a variety of control systems (4-20mA, 0-5V, or 0-10V, BACnet MSTP and Modbus RTU). Take a closer look at these leading carbon dioxide and VOC sensors in our CW2 series of CO2 and VOC sensors:
Temperature sensors are critical to monitoring the comfort of living and working spaces, but also for protecting temperature-sensitive materials or environments from mishaps. Many indoor temperature sensors focus on air temperature, but this is only one aspect of ensuring a compliant, safe, and comfortable environment. Pipe temperature sensors, for instance, help to ensure safe and optimal water temperatures (and to predict maintenance issues with heating systems) .
Here are a few priorities to set when evaluating wall mount temperature sensors, duct temperature sensors, discharge air temperature sensors, and other HVAC temperature sensors:
Veris makes temperature sensors for your every need, including: wall, duct, outdoor, averaging, pipe/immersion, discharge air, contact/strap-on, button, ceiling, and more. With the advantages offered by our indoor temperature sensors, you’ll be able to:
With the help of temperature sensing devices, climate-dependent locations like museums, schools, printing shops, hospitals, data centers, and others can protect sensitive materials and stay ASHRAE compliant while also ensuring maximum occupant comfort. The best results will come from averaging temperature sensors over time in a continuous, multi-sensor system that models long-term trends and predicts future needs. Take a closer look at these leading wall temperature sensors in our TW2 series of temperature sensors:
Few indoor air quality sensor platforms can offer the same advanced precision and robust data models, which will help keep building occupants comfortable and temperature-sensitive environments or materials safe.
Humidity sensing systems are an often overlooked area of building climate control, but quality humidity sensors are no less essential than thermostats, CO2 sensors, fire detectors, VOC sensors, and the like. The relative humidity (RH) of an indoor environment impacts occupant comfort, personal safety, and even the integrity of sensitive materials or equipment. For example, hospitals with high humidity are at risk of breeding mold or creating environments conducive to pathogen growth. A laboratory setting, on the other hand, may require higher humidity than most people find comfortable.
A network of humidity sensors helps you to better optimize the RH of your indoor climate. Here are a few priorities to set when evaluating humidistats, duct humidity sensors, wall humidity sensors, and more:
The Veris HW2 series of indoor RH sensors was designed to bring all of these qualities to a simple, easy-to-install wall humidity sensor. You’ll also have the freedom to select from three interface options to suit your needs, including a color touchscreen, three-button LCD display, or a subtle non-display (blank face) sensor that’s exclusively controlled through the BAS. Veris humidity sensors can be used to:
A detailed long-term data model of the indoor climate, from a multi-sensor system, is the best way to monitor and maintain a consistent, comfortable, or ideal atmosphere in climate-dependent facilities. If you’re looking for an efficient humidity sensing solution, take a closer look at these leading wall humidity sensors in our HW2 series of humidity sensors:
Your complete network of indoor air quality sensors will likely include devices in a wide range of locations, from room sensors in highly trafficked lobby areas to duct sensors in remote maintenance areas or unreachable wall sensors near the ceiling of large rooms. For this reason, it’s best to use a sensor platform that offers a choice of interfaces to suit the needs of each individual device.
The Veris IAQ room sensor platform, for instance, offers these three interface options:
It’s possible to mix and match sensor interfaces throughout your installation, so that each device is optimized for the context. If you need more information, check out our brief guide on choosing an IAQ sensor platform.
Indoor air quality doesn’t need to be complicated. If you have any questions we haven’t answered here, or want to learn more about IAQ sensors, installation, integration, interfaces, outputs, or anything else, don’t hesitate to contact Veris for help. Our expert team is always available to offer personalized advice or guide you towards the right solution for your building.
Looking for some of the indoor air quality sensors we’ve discussed? You’ve come to the right place. Shop online now for sensors in the category you need:
Veris is committed to providing high-quality energy, environmental, and IAQ sensor solutions at the right price for your budget. Our knowledgeable staff will work with you on a custom order scaled to the precise needs of your facility and your BAS. And if you’re ever in need of technical support, simply contact us and we'll be ready to help.
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