HVAC energy savings

HVAC Energy Savings with Advanced Disinfection

The status quo is the major hurdle to a paradigm shift in how we maximize energy savings for HVAC systems in homes and commercial/industrial buildings. Indoor air quality procedures (IAQP) are complicated, and have requirements per the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Standard 62.1-2019 .

Ultraviolet light devices can clean the air and the fan coils, when placed correctly, in HVAC ducts. The percentage of energy savings may range from 5% to 15% relative to total HVAC operating cost reduction, but it is lower for many facilities that have advanced filtration or regular coil cleaning maintenance service. Bipolar Ionization (BPI) disinfection technology has the potential to save over 30% on HVAC energy costs. Ionization and measuring indoor air quality levels are readily available but require some expertise to do it right. Learn more about Bipolar Ionization.

HVAC Energy Savings

The fortunate biproduct of cleaner indoor air is HVAC energy savings. Clean indoor air reduces the need to have as much outside replacement air in the ventilation system. Current ventilation standards lead to higher energy costs, with indoor air that is replaced with outside air 1-2 time per hour. This is literally like paying to heat the neighborhood in the winter and cooling the neighborhood in the summer. Bipolar ionization can reduce ventilation rates by up to 75%. According to the U.S. Department of Energy, buildings account for 40% of U.S. greenhouse gas (GHG) emissions, and HVAC is often the largest energy consumer, accounting for 35% of total building energy. With current ventilation standards, conditioning the outside air that is brought in represents 30-50% (average 40%) of the total load on HVAC systems in most climates. With a 75% reduction of outside replacement air on the average of 40% energy used for outside air treatment, the energy savings is 30% on HVAC. The 30% energy savings on the 40% of GHG adds up to a 12% reduction in GHG without changing ANY behavior.


COVID-19 Results: Over 99% reduction of indoor air pathogens, which dramatically reduces the risk of infections.

HVAC Energy Savings relative to overall sustainability

Climate Change Results: 12% reduction in greenhouse gas emissions without any changes in human behavior.

CASE STUDIES – Energy Savings

For CASE STUDIES see this link, https://purgevirus.com/bipolar-ionization-case-study-highlights/, and for your convenience we have included some of the ones relative to energy savings below:

Education – Greer High School (+ Energy Savings)

Challenge: Greer High School was utilizing an outdated HVAC system that was bringing in excessive amounts of outside air, resulting in (1) wasted energy, (2) high humidity, and (3) mold growth.

Solution for this Bipolar Ionization Case Study: By utilizing the ASHRAE Indoor Air Quality Procedure, the school was able to incorporate the needlepoint bipolar ionization technology to reduce the amount of outside air needed to condition the building. The installed ionization systems reduce the intake of outside air while improving the indoor air quality.

Bipolar Ionization Case Study Results: The school realized an annual energy savings of approximately $10,000 by using the electronic air cleaners that allowed for a reduction in the per person outside air intake from 17 CFM to 5 CFM. The use of needlepoint bipolar ionization technology resulted in a lower capital expenditure while reducing the overall energy expense, thus providing the least costly ownership solution. Mold growth was abated by reducing the humidity level of the indoor air, creating a safer and cleaner space for the students and teachers.

Education – Valencia College (+ Energy Savings)

Challenge: The Valencia College, Lake Nona Campus, was constructed in 2012 and included state-of-the-art academic spaces, teaching labs, student services, bookstore, library, cafe, a Dean’s suite, and administrative offices. The 88,821 sq. ft. campus was a $21.7 million project. The school wanted to proactively implement needlepoint bipolar ionization for energy savings, but also wanted to proactively get ahead of any future issues around odors, particles or pathogens.

Solution for this Bipolar Ionization Case Study: The needlepoint bipolar ionization technology was installed in all the air handling units on campus. The equipment is perfect for such a large facility because it kills mold, bacteria, and airborne pathogens while maintaining clean cooling coils. 

Bipolar Ionization Case Study Results: The Valencia College, Lake Nona Campus was awarded 3 Green Globe certifications by Green Building Initiative. The needlepoint bipolar ionization technology reduced the outside air needed for ventilation by 9,300 CFM and saved $180,000 in chiller cost. The equipment was compatible with their current air handling unit, which avoided costly renovation expenses. Testing revealed that there was no Fungi or Bacteria detected on the cooling coil fins. This initiative generates $180,000 SAVINGS in annual energy costs.

Education – The Learning Experience (+ Energy Savings)

Challenge: The Learning Experience®, a national child care center franchise, realized that a large portion of their monthly operating budget was allocated to the heating and cooling of their facilities. Annual HVAC maintenance for the larger air handling equipment was also unpredictable and often an unforeseen additional expense.

Solution for this Bipolar Ionization Case Study: The self-cleaning needlepoint bipolar ionization technology was installed to reduce the amount of outside air needed to treat the indoor space. The technology also kills airborne pathogens and reduces the level of odor causing Volatile Organic Compounds (VOCs). Each installation incorporates 5 or 6 units to improve the indoor air quality of the building.

Bipolar Ionization Case Study Results: The Learning Experience® realized a 10 ton reduction, or about 1,500 CFM, of outside air intake with the installation of the needlepoint bipolar ionization technology. This helped avoid costly HVAC equipment upgrades while reducing operating and maintenance costs. The needlepoint bipolar ionization technology also provides the added benefit of pathogen destruction, minimizing the amount of airborne pathogens and ultimate cross-contamination of germs between the children and staff. The needlepoint bipolar ionization technology is the specified solution for all of The Learning Experience® facilities across the country.   

Entertainment – Amalie Arena (+ Energy Savings)

Challenge: The Amalie Arena, formerly known as the Tampa Bay Times Forum, underwent renovations in 2015. The original design of the HVAC system required approximately 202,000 CFM of outside air, according to the ASHRAE Ventilation Rate Procedure, to dilute the contaminants in the air and produce acceptable indoor air quality. The renovation of 2015 meant upgrades that would cost millions of dollars.

Solution for this Bipolar Ionization Case Study: Utilizing the ASHRAE Indoor Air Quality Procedure, the needlepoint bipolar ionization technology was installed to control airborne contaminants while reducing the amount of outside air needed. This solution provided excellent indoor air quality all while providing capital and operating cost reductions.

Bipolar Ionization Case Study Results: By installing the needlepoint bipolar ionization technology to purify the indoor air, the outside air intake was reduced to 108,000 CFM for a total savings of 94,000 CFM, or about 700 tons of cooling capacity. The reduction in cooling capacity resulted in a savings of more than $1 million in capital equipment. Furthermore, the facility is realizing an annual cost savings of approximately $115,000 in energy.

Health Care – Boston Children’s Hospital (+ Energy Savings)

Challenge: Boston Children’s Hospital needed to upgrade their HVAC system to deal with noxious diesel fumes and street odors emanating from a nearby construction zone. The hospital staff and patients had been complaining about the odors that the existing UV light system was unable to control. The facilities management team was also looking for a solution to keep the entire depth of the coils clean and free of biofilm. Their UV systems only treated a few inches of the coil depth.

Solution for this Bipolar Ionization Case Study: The hospital chose to install the needlepoint bipolar ionization technology to (1) control the noxious diesel fumes, (2) tackle the odors coming from the construction site, and (3) address the microorganisms that produced the biofilm on the coils.

Bipolar Ionization Case Study Results: The diesel fumes and other unpleasant odors were drastically reduced and coils cleaned within 48 hours, saving as much as 30% in power consumption. The hospital’s alternative to resolving the odor issues with the needlepoint bipolar ionization technologywould have been expensive renovations. The renovation would have added more demand to the system, creating high pressure drops. This would have resulted in a higher energy bill without 100% certainty of solving the problem.

Office – WeWork Office (+ Energy Savings)

Challenge: WeWork converts existing spaces into modern, beautiful, shared office spaces. With increasing occupancy and expansion. WeWork wanted to ensure excellent indoor air quality.

Solution for this Bipolar Ionization Case Study: WeWork selected the needlepoint bipolar ionization technologyto provide the best indoor air quality while minimizing costs by reducing the amount of outside air needed to ventilate the space. When new HVAC equipment is implemented, the ionization permits smaller HVAC solutions. In other cases, the ionization allows the owner to use the existing HVAC equipment. The self-cleaning needlepoint bipolar ionization equipment is perfect, because it is mountable on any indoor or outdoor duct.

Bipolar Ionization Case Study Results: WeWork realized greater than 50% savings in the HVAC renovation costs by installing smaller air-handling equipment while shortening their building upfit timeline. By using the needlepoint bipolar ionization technology, WeWork also reduced the amount of energy required to condition their spaces, realizing savings in operating expenses while creating “a world where people work to make a life.”

For more on Bipolar Ionization see: https://purgevirus.com/bipolar-ionization/

For maximum protection against COVID-19 and its variants, improved indoor air quality (IAQ) works in conjunction with the guidelines of the CDC.