Prioritizing good air quality in workspaces has been gaining a lot of traction in recent years. With employees spending the majority of their time in their offices, it becomes crucial for organizations to provide a healthy and safe environment to them. The modern workspace infrastructure is generally characterized by enclosed spaces, lacking windows to accommodate air conditioning systems. As a result, the structures give rise to a sealed indoor environment with hardly any scope for fresh air ventilation.

Unlike the common misconception that air conditioning improves the air quality of the space, it comes as a surprise for many that systems recirculate stale air. Additionally, with the space occupied by a large number of people, it continuously contributes to the build-up of carbon dioxide and pollutants within the space as it is unable to find an escape to the outside. All the factors together account for poor air quality and severely impact the health of the occupants. If left unattended, the poor IAQ can give rise to a range of health issues in a person, such as respiratory issues, allergies, and serious conditions of cardiovascular disease as well.


Moreover, continual exposure to poor IAQ can result in the development of Sick Building Syndrome, where the occupants are very likely to face breathing issues, headaches, asthma, fatigue, and pain in the eyes. Severely compromising the health and comfort of the person, lethargy and absenteeism are some common issues that impact the productivity of the individuals. As a result, it becomes a prerequisite to install technologies that improve the air quality of the workspace, aimed at enabling an efficient work process accompanied by enhanced concentration.

To achieve good air quality, employing Treated Fresh Air Handling (TFA) systems is essential. These systems precondition the incoming fresh air to meet ventilation standards and maintain excellent indoor air quality (IAQ). By filtering and treating the air before it enters the space, TFA systems eliminate pollutants, allergens, and contaminants, effectively impeding the spread of airborne diseases. As a result, these units ensure a consistent supply of clean and healthy air, significantly reducing health issues associated with poor air quality. Additionally, TFA systems are equipped with energy recovery wheels, which recover both sensible and latent energy, contributing to improved IAQ, humidity control, and energy savings.

The advanced systems bode well for achieving optimal indoor air quality throughout the year, irrespective of the weather conditions outside. Providing a stable and comfortable environment, the systems invariably contribute to high levels of engagement and motivation among the employees, enhancing their overall performance round the year.

In the pursuit of meeting the ventilation standards, the advanced technologies also vouch for energy efficiency. Striving to save energy while maximizing the energy recovery efficiency, they eliminate the need to increase the energy costs of the building. Here, by exercising the efficient airflow for ensuring the appropriate circulation of fresh air, the units come in handy for reducing the need for excessive heating and cooling of the space. Taking a holistic approach, they not just contribute to saving energy but extend to reducing the operational costs of the workspace at the same time.

To achieve the purpose, the Treated Fresh Air Handling Units ensure uniform distribution of air, which significantly curtails the demand for heating, ventilation, and air conditioning (HVAC) systems. Reducing the overall load of the system, there is a remarkable plunge in the operational cost as well as the energy consumption of the building. Consequently, by installing the systems, businesses can successfully achieve the twofold task of enhancing air quality within the workspace, which clocks substantial energy savings. While focusing on optimizing the air quality of the space, humidity is often neglected by people. But exercising humidity control is a crucial step towards providing a healthy indoor environment to the employees.

Here, the Dedicated Outdoor Air Systems (DOAS) harness the benefit of unique passive dehumidification wheels for ensuring adequate ventilation of the space. Coming with the ability to eliminate indoor air pollutants while monitoring humidity levels, the system replenishes fresh air to create a more pleasant and productive workspace.

The ability to control the relative humidity plays a crucial role in resisting the growth of mold, bacteria, fungi and prevents the issue of unpleasant odour and discomfort caused by excess moisture. In addition to this, monitoring the humidity can go a long way in safeguarding the office equipment and materials from any potential damage, retaining their longevity and reliability for a long time. Looking at the wide gamut of advantages optimal air quality has to offer for the workspace, it goes a long way in scaling the overall performance of the business.

Promoting the health and safety of the employees along with a comfortable space invariably improves the concentration and productivity of the occupants. In the process, employing Treated Air Handling Units can be considered a strategic business investment because it offers a comprehensive solution for providing energy-efficient ventilation. Conducting pre-conditioning of incoming air guarantees a consistent supply of fresh air. At the same time, monitoring the humidity levels of the space, the systems are an ideal option for ensuring the health and safety of the occupants.

 

Authored by:

Varun Pahwa
President,
Desiccant Rotors International

  1. Why is proper ventilation crucial for a home?

Proper ventilation is crucial for a home, as it significantly improves the AQI of indoor air of the space. It is efficient at eliminating the indoor pollutants present in the form of dust, allergens, and volatile organic compounds (VOCs) for supplying clean and healthy air into the house. In the process, ventilation prevents excess moisture buildup in the space, which in turn impedes the growth of mould, dampness, and any structural deterioration of walls, ceilings, and furniture occurring due to humidity.

Ventilation is also important for regulating the temperature of the space. Facilitating escape of hot air, it fosters a comfortable indoor temperature by promoting circulation of cooler air within the enclosed facility. Consequently, proper ventilation plays an instrumental role in reducing the air conditioning of a house significantly. Minimizing the strain on heating and cooling systems substantially, it helps in lower utility bills and drives better energy efficiency in the house.

In addition to this, a well-ventilated house is efficient at removing the odors released from cooking, cleaning products, and other sources, disseminating a fresh and pleasant environment within the house. Along with this, it also comes in handy for getting rid of carbon monoxide generally produced by stoves, fireplaces, and heaters in the house.

 

2. What are the different types of home ventilation systems (natural, mechanical, hybrid)? How should homeowners choose the most suitable option for their property?

Looking at the importance of ventilation, there are various types of home ventilation systems for facilitating optimal supply of fresh air.

  • Natural ventilation – Natural ventilation is majorly driven by unchecked air flow through windows and doors.
  • Exhaust ventilation – This type of ventilation is very common in kitchens and bathrooms and comes in handy for removing moisture from the spaces.
  • Balanced ventilation – Balanced ventilation works on the principle of air exchange, where fresh outdoor air is introduced into the house and an equal amount of stale air is forced out. It neither pressurizes nor depressurizes, thereby ensuring proper ventilation throughout space.
  • Mechanical Ventilation – This is a heat recovery ventilation situated at the top of the building. It supplies conditioned air and bodes well for proper flow of fresh air into the rooms.

The choice of ventilation depends on several factors, such as the house layout, size, and specific goals. It is subject to the purpose that needs to be achieved, such as the removal of excess moisture, driving energy efficiency, or exhaust ventilation. But while selecting the system, size of the house should be considered; as an oversized system can prove to be inefficient and an undersized system might be insufficient to meet the ventilation needs. Likewise, for larger commercial and industrial spaces exhibiting complex structures, installing Treated Fresh Air Handling (TFA) systems can be beneficial for eliminating pollutants, allergens, and contaminants, and Dedicated Outdoor Air Systems (DOAS) reside well for exercising immaculate humidity control.

3. What are some effective ways to improve indoor air quality through ventilation? Are there specific types of filters or systems recommended?

 

  • Innovative technologies

Considering that ventilation for enhancing indoor AQI can be achieved with the help of HVAC systems, it is essential to innovate and upgrade the systems by harnessing the power of advanced technologies.

  • Integrating groundbreaking solutions such as energy recovery ventilators (ERVs) can maximize ventilation by promoting heat and humidity exchange between incoming and outgoing air.

 

  • Similarly, TFA (Treated Fresh Air Units) bodes well for conducting the pre-conditioning of outdoor air for introducing clean and healthy air into the room. Being well equipped with energy recovery wheels, it goes a long way in recovering both sensible and latent energy, contributing to the energy efficiency of the systems.

 

  • Installing Dedicated Outdoor Air Systems (DOAS) controls the humidity levels with the help of unique passive dehumidification wheels and also facilitates replenishment of fresh air and removal of indoor air pollutants.

 

  • Smart Systems

 

Making use of AI or ML-driven systems can upscale the ventilation as it comes in handy for exercising centralized monitoring, data storage, etc., Such innovations help in smart and precise monitoring of the HVAC equipment based on the occupancy patterns.

4. What are some common mistakes homeowners make regarding home ventilation, and how can they avoid them? What should homeowners keep in mind about ventilation when renovating or upgrading their homes?

When it comes to ventilation, the common mistakes that people make are:

  • Neglecting natural and exhaust ventilation

Considering that modern-day houses and commercial buildings as well boast glass facades and packed structures for aesthetic appeal, they lack openings for natural ventilation. There are also instances where exhaust fans in kitchens and bathrooms skip people’s minds. It is advisable to make the best of natural ventilation, as it can significantly reduce the load on HVAC systems. Likewise, exhaust fans are also important for curbing the buildup of excess moisture and pollutants.

 

  • Avoiding maintenance

Once the HVAC systems are installed, people generally don’t pay any attention to the maintenance of the systems. However, cleaning and repair of HVAC systems should be conducted at regular intervals of time to avoid any damage or unplanned downtime. Systems in poor condition can severely compromise the effective ventilation of the space and consequently might not be able to address perils arising from poor IAQ of the building. Therefore, ensuring maintenance can prolong the lifespan of the systems and keep their longevity intact for a longer period of time.

  • Clogging of vents and registers

Very often, people tend to cover the vents with curtains, furniture, or other items, blocking the smooth airflow. This can lead to inefficiency of the HVAC systems and account for uneven heating and cooling of the room.

  • Wrong size

Selecting the right size is very challenging for people, where they might end up installing either an oversized or too small system for the building. Where large systems are responsible for frequent system on and off, undersized systems struggle to achieve and maintain the desired temperature. In both cases, it is difficult to drive the efficiency of the operations, leading to poor ventilation of space.

5. How often should ventilation systems be inspected or maintained? Are there signs that indicate a problem with a home’s ventilation system?

The maintenance of ventilation systems should be done at regular intervals of time. People can recognize any problem with the systems when experiencing uneven heating and cooling. A significant rise in electricity bills can suggest inefficient working of mechanical systems or malfunctioning of the HRV/ ERV systems.

Similarly, poor airflow can indicate blockage in supply vents and can be identified in case there is difficulty in opening doors or windows resulting from pressure imbalances. Experiencing stale or stuffy air, even after ventilation or lingering odour, implies poor air circulation. At the same time, the occurrence of frequent condensation on windows, walls, or ceilings and the growth of mould or mildew signify the presence of excessive humidity within the space.

One can also identify damage to ventilation systems by noticing increased dust accumulation even after regular cleaning. At the same time, on experiencing escalation of respiratory health issues, it is advisable to check for poor filtration of the systems.

Employing predictive maintenance with the help of advanced technologies can give significant results. The smart sensors, routine system upgrades, and Building Management Systems (BMS) enable real-time monitoring and updates. Together they work towards timely identification of any issue in the systems, encouraging prompt action to address the problem.

 

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