75F Epidemic Mode
Credits - Times of India

As offices prepare to reopen across India, buildings are the new front in the fight against COVID-19. Today, 75F announced 75F Epidemic Mode™, a new HVAC software sequence that ensures commercial buildings are healthier while keeping employees and customers safe.

The system features various components such as indoor air flushes, where post working hours the entire air within the premises is replaced with fresh air from outside, and during office hours ventilation from outside is increased to limit movement of airborne particles and reuse of indoor air.

All these are based on the latest guidance from scientists, government organizations, and global industry leaders such as ISHRAE which has been adopted by the Indian Government, ASHRAE, and the CDC.


Recent studies show the spread of COVID-19 appears to be occurring through the airborne transmission of aerosols, particles 1-5 microns in size which cannot be reliably filtered out using a MERV-13 or HEPA filter.

While much of the focus is on droplets 100-1000 microns in size produced by coughing or sneezing, a large quantity of aerosolized infectious particles are also produced and are more likely to be produced by asymptomatic individuals or those who do not know they are infected simply from breathing or speaking.

A recent study showed that more than 1000 of these virus-containing aerosols are emitted every minute of speaking, more proof that without dilution ventilation from outside air, buildings have a high risk of viral build-up and exposure.

In response to this, various organizations such as ISHRAE (Indian Society of Heating, Refrigerating and Air-conditioning Engineers), ASHRAE (American Society of Heating, Refrigerating and Air-conditioning Engineers) and the CDC (Centre for Disease Control) have released new guidelines for the operation and control of HVAC systems to reduce disease transmission from infectious airborne particles and ensure a safe and healthy workplace.

The 75F Epidemic Mode™ achieves the directives through its specific application profiles; Smart Purge™ and Smart Enhance Ventilation™.

75F Smart Purge™ – 75F’s Smart Purge™ application profile works in pre- and post-occupancy settings and fully adheres to ISHRAE, ASHRAE recommendations to prevent re-circulation of air and to purge the air before and after occupancy.

75F Smart Enhanced Ventilation™ – This profile ensures the indoor environment remains as safe as possible during a building’s occupied period and reduces the risk of infection from an aerosolized particle.

Apart from minimizing viral loads in buildings the 75F Epidemic Mode™ also delivers significant energy savings. Increasing ventilation from 20% outside air to 90% outside air can normally lead to a high energy bill, but with the 75F Epidemic Mode profiles, the concentration of infectious airborne particles is reduced while energy consumption is minimized

“The world is amid a pandemic with so many unknowns, where the brightest minds are developing innovative ways to modify their businesses and 75F Epidemic Mode does that for the commercial building industry,” said Deepinder Singh, CEO, and Founder of 75F.

Epidemic Mode™ is updated by 75F as guidelines from these organizations evolve or new data emerges. This means it offers the most current sequences that minimize operating expenses and viral transmission while improving indoor air quality (IAQ) and energy efficiency. Furthermore, 75F Epidemic Mode™ does not require any manual programming and there is no risk of equipment damage from running the system outside typical parameters.

Apart from minimizing operating expenses the 75F Epidemic Mode™ also delivers significant energy savings. Increasing ventilation from 20% outside air to 90% outside air can normally lead to a high energy bill, but with the 75F Epidemic Mode profiles, the concentration of infectious airborne particles is reduced while energy consumption is minimized.

“Being able to give companies and their employees some peace of mind that their facilities managers are taking the initiative to make their environments safe and healthy is extremely important and we believe will become the norm even when the outbreak is over”, adds Gaurav Burman, APAC President of 75F.

75F offers the only system on the market today currently implementing these healthy building measures, which are available free of charge to all customers in office buildings, retail businesses, schools, restaurants, and apartment buildings. Once the pandemic is controlled, 75F technology will allow facility managers to easily, and remotely, disable these measures, with a return to 75F’s award-winning algorithms to improve the comfort of occupants.

LEAVE A REPLY

Please enter your comment!
Please enter your name here