{"id":93348,"date":"2025-08-25T12:42:47","date_gmt":"2025-08-25T07:12:47","guid":{"rendered":"https:\/\/greyb.com\/?p=93348"},"modified":"2025-10-15T14:28:11","modified_gmt":"2025-10-15T08:58:11","slug":"hepa-filter-alternatives","status":"publish","type":"post","link":"https:\/\/greyb.com\/blog\/hepa-filter-alternatives\/","title":{"rendered":"Still Using HEPA? It\u2019s Costing Your Clients In Budget and Carbon Credits"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Facility managers report that traditional HEPA and carbon filters choke airflow, forcing HVAC systems to work harder. This leads to a <a href=\"https:\/\/cleanair.camfil.us\/2025\/03\/19\/hvac-engineers-resource-for-low-pressure-drop-air-filters\/\">30%<\/a> rise in energy consumption. The result? Rising utility bills, mounting carbon emissions, and a steep <a href=\"https:\/\/www.mynewsdesk.com\/us\/camfil\/pressreleases\/exposing-the-true-cost-of-economy-air-filters-a-facility-managers-guide-to-cost-savings-and-sustainability-3358587#:~:text=,affects%20system%20performance%20and%20longevity\">300%<\/a> increase in labor costs due to frequent replacements. Moreover, each filter change adds to landfill waste, directly contradicting the company\u2019s ESG goals. HVAC companies must overcome these challenges to support the corporate sustainability goals of their clients.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Take Carrier, for example. The HVAC giant partnered with the U.S.-based startup Transaera to co-develop ultra-efficient climate systems. These systems leveraged Transaera\u2019s novel desiccant technology, in which a unique sponge-like material is used to capture moisture from the air to enhance cooling efficiency. The strategic investment is a part of Carrier&#8217;s goal to reduce the carbon footprint of its clients by more than 1 gigaton by <a href=\"https:\/\/www.corporate.carrier.com\/Images\/Corporate-Carrier-2023-ESG-Report-0723-English_tcm558-205336.pdf#:~:text=Sustainable%20Solutions%20Carrier%20aims%20to,zero%20carbon%20consulting\">2030<\/a>. This signals a clear shift: the future belongs to HVAC systems that deliver both performance and sustainability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To stay competitive, open innovation managers must start sourcing breakthrough filtration technologies, ones that extend the filter life or eliminate filters altogether.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An examination of the latest HVAC patents by leading companies and well-known universities revealed four primary trends for 2026. Apart from Energy Efficiency and Optimization, innovations in System Reliability and Maintenance, Environmental Control, and Material Durability are on the rise. Fill out the form below to get the comprehensive report on breakthrough innovations in HVAC.<\/p>\n\n\n<div class=\"hubspot-form-container\" id=\"hsf\"><div class=\"hubspot-form-pictures\"><img decoding=\"async\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/09\/HVAC-Industry-Trends-2026.png\" \/><\/div><text><script charset='ecutf-8' type='text\/javascript' src='\/\/js.hsforms.net\/forms\/embed\/v2.js'><\/script><script >hbspt.forms.create({region: \"na1\",portalId: \"1791848\",formId: \"1ead5344-36f9-4b54-b2fe-6a43480b2f76\"});<\/script><\/text><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A thorough analysis on the basis of technology patents, awards &amp; grants received, investor funding, and industrial partnerships helped us identify the four most promising startups replacing traditional HEPA filters.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1310\" height=\"506\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/A-thorough-analysis-of-startups-replacing-HEPA-filters-on-the-basis-of-technology-patents-awards-grants-received-investor-funding-and-industrial-partnerships.png\" alt=\"HEPA Filter Alternatives: A thorough analysis of startups replacing HEPA filters on the basis of technology patents, awards &amp; grants received, investor funding, and industrial partnerships\" class=\"wp-image-93349\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/A-thorough-analysis-of-startups-replacing-HEPA-filters-on-the-basis-of-technology-patents-awards-grants-received-investor-funding-and-industrial-partnerships.png 1310w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/A-thorough-analysis-of-startups-replacing-HEPA-filters-on-the-basis-of-technology-patents-awards-grants-received-investor-funding-and-industrial-partnerships-300x116.png 300w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/A-thorough-analysis-of-startups-replacing-HEPA-filters-on-the-basis-of-technology-patents-awards-grants-received-investor-funding-and-industrial-partnerships-1024x396.png 1024w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/A-thorough-analysis-of-startups-replacing-HEPA-filters-on-the-basis-of-technology-patents-awards-grants-received-investor-funding-and-industrial-partnerships-150x58.png 150w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/A-thorough-analysis-of-startups-replacing-HEPA-filters-on-the-basis-of-technology-patents-awards-grants-received-investor-funding-and-industrial-partnerships-768x297.png 768w\" sizes=\"(max-width: 1310px) 100vw, 1310px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Adsorbi\u2019s sustainable cellulose-based adsorbent has 50% lower CO2 emissions than traditional filters<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Website<\/td><td><a href=\"https:\/\/www.adsorbi.com\/technology\">https:\/\/www.adsorbi.com\/technology<\/a>&nbsp;<\/td><\/tr><tr><td>Total Funding Amount<\/td><td>\u20ac1.44 million<\/td><\/tr><tr><td>Last Funding Round\/Amount<\/td><td>\u20ac1 million<\/td><\/tr><tr><td>Target Use Cases&nbsp;<\/td><td>Commercial HVAC systems, Households, Museums<\/td><\/tr><tr><td>Partnerships\/Backers<\/td><td><a href=\"https:\/\/metsaspring.com\/\">Mets\u00e4 Spring<\/a>, <a href=\"https:\/\/chalmersventures.com\/\">Chalmers Ventures<\/a>, <a href=\"http:\/\/www.jovitech.se\/english\/\">Jovitech Invest<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Swedish clean\u2011tech startup Adsorbi has developed a <a href=\"https:\/\/slate.greyb.com\/app\/engage\/WO2024076279A1\">cellulose-based<\/a> adsorbent from sustainably harvested Nordic wood to replace activated carbon materials in the air filtration systems.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1263\" height=\"533\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Patent-pending-method-of-production-of-the-innovative-adsorbent-material.jpg\" alt=\"HEPA Filter Alternatives: Patent pending method of production of the innovative adsorbent material\" class=\"wp-image-93350\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Patent-pending-method-of-production-of-the-innovative-adsorbent-material.jpg 1263w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Patent-pending-method-of-production-of-the-innovative-adsorbent-material-300x127.jpg 300w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Patent-pending-method-of-production-of-the-innovative-adsorbent-material-1024x432.jpg 1024w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Patent-pending-method-of-production-of-the-innovative-adsorbent-material-150x63.jpg 150w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Patent-pending-method-of-production-of-the-innovative-adsorbent-material-768x324.jpg 768w\" sizes=\"(max-width: 1263px) 100vw, 1263px\" \/><figcaption class=\"wp-element-caption\"><strong>HEPA Filter Alternatives<\/strong>: Patent-pending method of production of the innovative adsorbent material<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The adsorbent material demonstrates <a href=\"https:\/\/chalmersventures.com\/startups\/adsorbi\/\">5\u20138\u00d7<\/a> higher adsorption efficiency than traditional alternatives like activated carbon. It is recyclable and is both water and fire-resistant. It has a longer lifespan than industry-standard materials, reducing the frequency of replacements. The cellulose-based material has a low environmental impact throughout the entire value chain.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is an energy-efficient alternative to traditional filters, generating around 50% lower CO2 emissions. It produces 3.5 kg CO2 per kilogram of material, compared to activated carbon, which has an emission factor of 7.5 kg CO2 per kilogram of material.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Unlike HEPA filters, this adsorbent effectively captures volatile organic compounds (VOCs), carbon monoxide (CO), nitrogen oxides (NOx), and gaseous ammonia (NH3).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It maintains high performance regardless of humidity levels and easily retrofits into large-scale HVAC systems. It generates minimal dust during installation or replacement.  As the material captures pollutants, it gradually changes color from white to brown, allowing constant monitoring to signal when it needs replacing. All these features ensure easy HVAC maintenance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The startup is establishing a production facility in Gothenburg with the capacity to manufacture <a href=\"https:\/\/techreviewers.net\/swedish-startup-to-build-pilot-plant-for-wood-based-material-that-purifies-the-air\/\">100 tonnes<\/a> of Adsorbi material annually, demonstrating its strong potential for scalability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Founded in 2022 and spun out from Chalmers University, the company is led by CTO <a href=\"https:\/\/www.linkedin.com\/in\/kinga-grenda\/?originalSubdomain=se\">Kinga Grenda<\/a> and CEO Hanna Johansson. The Adsorbi\u2019s innovative material was first developed to capture VOCs in museums to protect sensitive artwork from deterioration. Since then, the company has broadened the scope of pollutant removal to many other industries.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This material\u2019s use cases also include protecting sensitive objects such as chemicals, food, and shoes from air pollutants and odor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In September 2024, Adsorbi won the national final at the <a href=\"https:\/\/www.adsorbi.com\/news\/adsorbi-joins-y-combinator-copy-2\">SEB Next Awards<\/a> in the New Ideas category, a prestigious competition that recognizes sustainable Swedish entrepreneurship.&nbsp;<\/p>\n\n\n<div class=\"related-articles-container\"><h4 class =\"related-articles-container-title\">Recommended Read<\/h4><div class=\"related-article\"><div class=\"related-article-thumbnail-container\"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/05\/HVAC-Innovation-Trends-Report.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"HVAC Innovation Trends\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/05\/HVAC-Innovation-Trends-Report.png 1920w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/05\/HVAC-Innovation-Trends-Report-300x169.png 300w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/05\/HVAC-Innovation-Trends-Report-1024x576.png 1024w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/05\/HVAC-Innovation-Trends-Report-150x84.png 150w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/05\/HVAC-Innovation-Trends-Report-768x432.png 768w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/05\/HVAC-Innovation-Trends-Report-1536x864.png 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/div><div class=\"related-article-content-container\"><div class=\"related-article-title\"><a href=\"https:\/\/greyb.com\/blog\/hvac-innovation-trends\/\">Technologies Driving Smarter, Cleaner, Cheaper, and Silent HVAC Systems<\/a><\/div><a href=\"https:\/\/greyb.com\/blog\/hvac-innovation-trends\/\" class=\"button-read-post\">Read Post <i class=\"arrow-right teenyicon ti-arrow-right\"><\/i><\/a><\/div><\/div><div class=\"related-article\"><div class=\"related-article-thumbnail-container\"><img loading=\"lazy\" decoding=\"async\" width=\"792\" height=\"302\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2024\/12\/maintaining-air-quality-in-hvac-innovative-solutions-for-healthier-indoor-environments.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Maintaining Air Quality in HVAC Innovative Solutions for Healthier Indoor Environments\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2024\/12\/maintaining-air-quality-in-hvac-innovative-solutions-for-healthier-indoor-environments.png 792w, https:\/\/greyb.com\/wp-content\/uploads\/2024\/12\/maintaining-air-quality-in-hvac-innovative-solutions-for-healthier-indoor-environments-300x114.png 300w, https:\/\/greyb.com\/wp-content\/uploads\/2024\/12\/maintaining-air-quality-in-hvac-innovative-solutions-for-healthier-indoor-environments-150x57.png 150w, https:\/\/greyb.com\/wp-content\/uploads\/2024\/12\/maintaining-air-quality-in-hvac-innovative-solutions-for-healthier-indoor-environments-768x293.png 768w\" sizes=\"(max-width: 792px) 100vw, 792px\" \/><\/div><div class=\"related-article-content-container\"><div class=\"related-article-title\"><a href=\"https:\/\/greyb.com\/blog\/air-quality-in-hvac\/\">Maintaining Air Quality in HVAC Systems: Innovative Solutions for Healthier Indoor Environments<\/a><\/div><a href=\"https:\/\/greyb.com\/blog\/air-quality-in-hvac\/\" class=\"button-read-post\">Read Post <i class=\"arrow-right teenyicon ti-arrow-right\"><\/i><\/a><\/div><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Innova NanoJet\u2019s noise-free, water-based air purification is perfect for healthcare facilities<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Website<\/td><td><a href=\"https:\/\/www.innova-nanojet.co.uk\/\">https:\/\/www.innova-nanojet.co.uk\/<\/a>&nbsp;<\/td><\/tr><tr><td>Total Funding Amount<\/td><td>$1.95 million<\/td><\/tr><tr><td>Last Funding Round\/Amount<\/td><td>Seed round<\/td><\/tr><tr><td>Target Use Cases&nbsp;<\/td><td>Commercial buildings, Hospitals and Clinics, Households<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Scotland-based Innova NanoJet uses supersonic, ultra-fine <a href=\"https:\/\/slate.greyb.com\/app\/engage\/US20240375131A1\">nano-scale droplet sprays<\/a> for filter-free air purification. These high-speed water droplets encapsulate airborne contaminants, causing them to fall out of suspension, to purify the air. This process destroys 99% of airborne pollutants, including viruses, bacteria, allergens, and mold spores. It is capable of eliminating fine particulate matter, including PM2.5 and PM10, which traditional HEPA filters can only partially capture.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1099\" height=\"498\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Water-based-air-purification-technology-by-Innova-Nanojet.jpg\" alt=\"HEPA Filter Alternatives: Water based air purification technology by Innova Nanojet\" class=\"wp-image-93351\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Water-based-air-purification-technology-by-Innova-Nanojet.jpg 1099w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Water-based-air-purification-technology-by-Innova-Nanojet-300x136.jpg 300w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Water-based-air-purification-technology-by-Innova-Nanojet-1024x464.jpg 1024w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Water-based-air-purification-technology-by-Innova-Nanojet-150x68.jpg 150w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Water-based-air-purification-technology-by-Innova-Nanojet-768x348.jpg 768w\" sizes=\"(max-width: 1099px) 100vw, 1099px\" \/><figcaption class=\"wp-element-caption\">HEPA Filter Alternatives: Water based air purification technology by Innova Nanojet<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The company&#8217;s flagship &#8220;Clean Air for Life&#8221; CDa series is ISO 9001, ISO 14001, and ISO 45001 certified. The water-based technology eliminates the need for costly filter replacements, reducing maintenance costs compared to traditional filtration systems. The device also includes an acoustic structure designed to reduce noise produced during atomization, making it safer and more suitable for environments that require less noise pollution, e.g., healthcare, residential spaces.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1334\" height=\"1999\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Innova-NanoJets-CDa-series.png\" alt=\"HEPA Filter Alternatives: Innova NanoJet\u2019s CDa series\" class=\"wp-image-93352\" style=\"width:404px;height:auto\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Innova-NanoJets-CDa-series.png 1334w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Innova-NanoJets-CDa-series-200x300.png 200w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Innova-NanoJets-CDa-series-683x1024.png 683w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Innova-NanoJets-CDa-series-100x150.png 100w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Innova-NanoJets-CDa-series-768x1151.png 768w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Innova-NanoJets-CDa-series-1025x1536.png 1025w\" sizes=\"(max-width: 1334px) 100vw, 1334px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">In 2025, Strakonice Hospital in the Czech Republic adopted the CDa Pro Air Purifier for its pulmonary department reported outstanding results in improving air quality for patients and staff.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Innova NanoJet has established distribution partnerships in the UK, USA, EMEA, and South &amp; Central America. The company has also received support from Scottish Enterprise, including a <a href=\"https:\/\/www.scottish-enterprise-mediacentre.com\/news\/west-dunbartonshire-to-benefit-from-195-new-jobs-thanks-to-air-purification-and-disinfection-technology-company-innova-nanojet-technologies-ltd\">\u00a31.5 million<\/a> grant, to establish its manufacturing facility in Dumbarton, Scotland.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Founded in 2022, Innova NanoJet is headed by Chairman and CEO Dr Charles Huang. The company earned the CES 2024 TWICE Picks Award for its innovative air purification solutions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">AirLich\u2019s multi-faceted approach for sustainable indoor air purification reduces operational cost by 45%<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Website<\/td><td><a href=\"https:\/\/www.airlich.com\/\">https:\/\/www.airlich.com\/<\/a>&nbsp;<\/td><\/tr><tr><td>Total Funding Amount<\/td><td>Not Available<\/td><\/tr><tr><td>Last Funding Round\/Amount<\/td><td>Not Available<\/td><\/tr><tr><td>Target Use Cases&nbsp;<\/td><td>Commercial HVAC Systems, Semiconductor Clean Rooms, Healthcare Facilities<\/td><\/tr><tr><td>Partnerships\/Backers<\/td><td>Technical University of Denmark (DTU), DEAS A\/S<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Danish startup Airlich IP ApS uses a <a href=\"https:\/\/slate.greyb.com\/app\/engage\/EP3897920A1\">proprietary technology<\/a> that combines photocatalytic, electrostatic, and catalytic processes for sustainable indoor air purification.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">First, the exhausted air is exposed to vacuum ultraviolet radiation, which triggers a radical chain reaction that breaks down and removes gas-phase pollutants.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Secondly, the air stream is directed through an electric field where particles are charged and subsequently collected as dust on a surface. Finally, the air goes through a gas-phase catalytic process that promotes cold combustion of any remaining volatile pollutants. This step is enhanced by energy from the ultraviolet radiation. The cleaned air is then returned to the ventilation ducts. This multifaceted approach ensures comprehensive air purification.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1036\" height=\"397\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/AirLichs-multi-faceted-approach-for-sustainable-indoor-air.jpg\" alt=\"HEPA Filter Alternatives: AirLich\u2019s multi faceted approach for sustainable indoor air\" class=\"wp-image-93353\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/AirLichs-multi-faceted-approach-for-sustainable-indoor-air.jpg 1036w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/AirLichs-multi-faceted-approach-for-sustainable-indoor-air-300x115.jpg 300w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/AirLichs-multi-faceted-approach-for-sustainable-indoor-air-1024x392.jpg 1024w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/AirLichs-multi-faceted-approach-for-sustainable-indoor-air-150x57.jpg 150w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/AirLichs-multi-faceted-approach-for-sustainable-indoor-air-768x294.jpg 768w\" sizes=\"(max-width: 1036px) 100vw, 1036px\" \/><figcaption class=\"wp-element-caption\"><strong>HEPA Filter Alternatives<\/strong>: AirLich\u2019s multi faceted approach for sustainable indoor air<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Most conventional filters require regular replacement, which can lead to a drop in air pressure, causing the system to work harder and consume more energy. However, Airlich\u2019s open-path technology doesn\u2019t depend on filters that get clogged or need replacing. As a result, it avoids the common problem of airflow resistance, keeping the pressure drop very low, under 100 pascals (Pa). This reduces operational costs associated with HVAC by up to 45%, making the system more energy efficient. Low-pressure drops make the system ideal for extremely controlled environments like semiconductor clean rooms.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can easily retrofit Airlich\u2019s EcoGain&#x2122; to both new and existing HVAC systems. It significantly reduces a building&#8217;s CO\u2082 footprint by reducing energy consumption for ventilation and air-conditioning solutions. The simulations showed that a single free-standing McDonald\u2019s restaurant of about 600 m\u00b2 in Denmark reduced its CO\u2082 emissions by up to <a href=\"https:\/\/platform.cleantechscandinavia.com\/nco_applications\/airlich\/\">19 <\/a>tons per year.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Despite not using traditional filters, it can remove up to 90% of gas and particle pollutants in just one pass through the system. The system continuously collects and analyzes data on everything from temperatures and energy consumption to parts per billion air contamination levels to quantify the positive impact of the technology.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The payback periods typically ranging between 2\u20134 years, depending on local energy prices, indicating a favorable balance of CAPEX recovery through long-term OPEX reductions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Founded in 2022, the company is led by CEO <a href=\"https:\/\/www.linkedin.com\/in\/rasmus-j%C3%B8lck-0196838\/?originalSubdomain=dk\">Rasmus J\u00f8lck<\/a> and CFO <a href=\"https:\/\/www.linkedin.com\/in\/panayiotis-koullas-8946b64\/\">Panayiotis Koullas<\/a>. The Danish Energy Agency&#8217;s Energy Technology Development and Demonstration Programme (EUDP) awarded the company a grant of DKK 7.35 million in February 2025.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Applied Photonix\u2019s ViroZap technology is FDA-approved<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Website<\/td><td><a href=\"https:\/\/www.aphotonix.com\/\">https:\/\/www.aphotonix.com\/<\/a>&nbsp;<\/td><\/tr><tr><td>Total Funding Amount<\/td><td>Not Available&nbsp;<\/td><\/tr><tr><td>Last Funding Round\/Amount<\/td><td>Not Available<\/td><\/tr><tr><td>Target Use Cases&nbsp;<\/td><td>Commercial HVAC Systems, Healthcare Facilities, Public Spaces<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Applied Photonix\u2019s ViroZap technology utilizes a combination of filtration, advanced plasmonic photonic technology, and LED lighting to destroy pathogens in the air.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The company\u2019s <a href=\"https:\/\/slate.greyb.com\/app\/engage\/WO2024226743A2\">patent-pending<\/a> plasmonic photonic technology combines two key components:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Plasmonic nanoparticles<\/strong>: Made from non-oxidizing metal alloys like silver-boron, these nanoparticles enhance light absorption and catalysis.<br><\/li>\n\n\n\n<li><strong>Photocatalysts<\/strong>: Semiconductor oxides such as TiO\u2082 or ZnO, activated by specific light wavelengths (350\u2013420 nm) that facilitate the breakdown of pollutants.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">UV-A or visible light activates the photocatalyst. This activation creates electron\u2013hole pairs. At the same time, plasmonic nanoparticles absorb the light and make the local electromagnetic field stronger. This increases the efficiency of the photocatalytic process. Once activated, the photocatalyst produces highly reactive hydroxyl radicals, which attack and destroy pollutants. This process ensures the continuous breakdown of contaminants without the need for frequent filter replacements.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"756\" height=\"432\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Applied-Photonixs-ViroZap-technology.jpg\" alt=\"HEPA Filter Alternatives: Applied Photonix\u2019s ViroZap technology\" class=\"wp-image-93356\" style=\"width:617px;height:auto\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Applied-Photonixs-ViroZap-technology.jpg 756w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Applied-Photonixs-ViroZap-technology-300x171.jpg 300w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Applied-Photonixs-ViroZap-technology-150x86.jpg 150w\" sizes=\"(max-width: 756px) 100vw, 756px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The ViroZap has been tested on a wide variety of airborne microorganisms at an air flow of 500 CFM. It showed over 4 log reduction in a short period of time, meaning it significantly eliminates harmful microbes in the air.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"987\" height=\"614\" src=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Comparison-of-ViroZap-vs.-HEPA-Electrostatic-Filters-Ozonation-Germicidal-Lamps-and-Fumigation.png\" alt=\"HEPA Filter Alternatives: Comparison of ViroZap vs. HEPA, Electrostatic Filters, Ozonation, Germicidal Lamps, and Fumigation\" class=\"wp-image-93359\" srcset=\"https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Comparison-of-ViroZap-vs.-HEPA-Electrostatic-Filters-Ozonation-Germicidal-Lamps-and-Fumigation.png 987w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Comparison-of-ViroZap-vs.-HEPA-Electrostatic-Filters-Ozonation-Germicidal-Lamps-and-Fumigation-300x187.png 300w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Comparison-of-ViroZap-vs.-HEPA-Electrostatic-Filters-Ozonation-Germicidal-Lamps-and-Fumigation-150x93.png 150w, https:\/\/greyb.com\/wp-content\/uploads\/2025\/08\/Comparison-of-ViroZap-vs.-HEPA-Electrostatic-Filters-Ozonation-Germicidal-Lamps-and-Fumigation-768x478.png 768w\" sizes=\"(max-width: 987px) 100vw, 987px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">ViroZap products have received <a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfPMN\/pmn.cfm?ID=K241140&amp;utm\">FDA 510(K)<\/a> clearance based on their performance against volatile organic compounds (like toluene), bacteria, fungal spores, and viruses. It is UL certified and can retrofit into existing HVAC systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Scientists <a href=\"https:\/\/www.linkedin.com\/in\/yogi-goswami-66127710\/\">Yogi Goswami<\/a> and <a href=\"https:\/\/www.linkedin.com\/in\/lovely-goswami-817b2a26\/\">Lovely Goswami<\/a> developed this technology in response to the COVID-19 pandemic.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">With increasing regulatory pressure to cut carbon footprint, the demand for smart, low-maintenance air purification solutions is accelerating. HVAC companies must expand their portfolios with sustainable innovations to help their clients meet their net-zero goals.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Open innovation managers must evaluate startups based on proof of concept, scalability, regulatory readiness, and long-term feasibility to identify investment-worthy opportunities. Our experts can help you cut through the noise to find the best startup that aligns with your business goals.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fill out the form below to connect with us and discover high-potential startups before your competitors do.<\/p>\n\n\n\t\t<div data-elementor-type=\"section\" data-elementor-id=\"65999\" class=\"elementor elementor-65999\" data-elementor-post-type=\"elementor_library\">\n\t\t\t<div class=\"elementor-element elementor-element-895c2aa elementor-hidden-desktop elementor-hidden-laptop elementor-hidden-tablet e-flex e-con-boxed e-con e-parent\" data-id=\"895c2aa\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e98cabd exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-heading\" data-id=\"e98cabd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\"><\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4427de elementor-align-center bpopup-toggle exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-button\" data-id=\"a4427de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Download PDF<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2500312 exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-html\" data-id=\"2500312\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"hubspot-popup\">\r\n        <div class=\"hubspot-popup-content\">\r\n            <text><script text\/javascript charset='ecutf-8' type='text\/javascript' src='\/\/js.hsforms.net\/forms\/embed\/v2.js'><\/script><script text\/javascript><\/script><\/text>\r\n        <\/div>\r\n        <div class=\"clearfix\"><\/div>\r\n    <\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n\n\n\n<div data-elementor-type=\"section\" data-elementor-id=\"65995\" class=\"elementor elementor-65995\" data-elementor-post-type=\"elementor_library\">\n<div class=\"elementor-element elementor-element-7c10b72 elementor-hidden-mobile e-flex e-con-boxed e-con e-parent\" data-id=\"7c10b72\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n<div class=\"e-con-inner\">\n<div class=\"elementor-element elementor-element-749fb79 exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-heading\" data-id=\"749fb79\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n<div class=\"elementor-widget-container\">\n<h4 class=\"elementor-heading-title elementor-size-default\"><\/h4>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"elementor-element elementor-element-b3a4ecd exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-text-editor\" data-id=\"b3a4ecd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<text><script text\/javascript charset='ecutf-8' type='text\/javascript' src='\/\/js.hsforms.net\/forms\/embed\/v2.js'><\/script><script text\/javascript><\/script><\/text>\t\t\t\t\t\t\t\t<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Facility managers report that traditional HEPA and carbon filters choke airflow, forcing HVAC systems to work harder. This leads to a 30% rise in energy consumption. The result? Rising utility bills, mounting carbon emissions, and a steep 300% increase in labor costs due to frequent replacements. Moreover, each filter change adds to landfill waste, directly [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":93388,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_angie_page":false,"content-type":"","page_builder":"","service_relation":["43170"],"industry_relation":["61055"],"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1563],"tags":[1883,1635,1636,1663,2696,1551,1782],"class_list":["post-93348","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-startup-research","tag-hvac","tag-innovation-manager","tag-innovation-research","tag-open-innovation","tag-rd","tag-rd-head","tag-startups"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Top HEPA Filter Alternatives for Sustainable HVAC Systems - GreyB<\/title>\n<meta name=\"description\" content=\"Traditional HEPA filters are energy-intensive and unsustainable, driving up HVAC costs and emissions. 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