- HEP Heat and Air
- Hospital-grade Filtration

Hospital-grade Filtration
Hospital-grade Filtration | Ventilation and Air Quality | Heating and Air Conditioning | Athens
Step into refreshing comfort every time you open the door. HEP’s hospital-grade filtration systems pair seamlessly with our precision-engineered heating and air conditioning units to strip out 99.97% of airborne particles, including pollen, mold spores, and even microscopic pathogens. From cozy Five Points bungalows to bustling storefronts downtown, our Athens technicians design and install solutions that constantly scrub your indoor air, balance humidity, and circulate temperature-controlled freshness—so you can breathe easier, sleep better, and protect the people who matter most.
Beyond the filter, smart sensors and whisper-quiet fans work around the clock to optimize ventilation and air quality, automatically adjusting airflow as outdoor conditions change. The result is a healthier home or workplace that feels as good as it looks—backed by HEP’s 24/7 service promise and decades of HVAC expertise. Live, work, and thrive in a space where every breath reminds you why Athens trusts HEP.
FAQs
What is hospital-grade air filtration and how does it differ from a standard HVAC filter?
Hospital-grade filtration refers to any air-cleaning system capable of removing at least 99.97 % of particles 0.3 microns in diameter—the performance level of true HEPA (High-Efficiency Particulate Air) filters used in operating rooms and isolation wards. Standard residential filters are usually MERV-8 to MERV-10, designed mainly to protect equipment rather than occupants, and capture only about 20-30 % of particles in the 1–3 micron range. By contrast, our hospital-grade packages for Athens properties combine HEPA or medical-grade ULPA media, high-MERV pre-filters, and optional active technologies (UV-C, photocatalytic oxidation, bipolar ionisation) to trap or neutralise bacteria, viruses, mould spores, pollen, and fine dust that typical filters miss.
Why is hospital-grade filtration especially valuable in Athens?
Athens experiences hot, stagnant summers, high pollen counts during spring, Saharan dust events, and increased urban air pollution all year long. These factors lead to higher concentrations of PM2.5, allergens, and microbial contaminants inside buildings. Hospital-grade filtration dramatically reduces these pollutants, helping sensitive groups—such as children, the elderly, or people with asthma and allergies—breathe easier. In commercial spaces it also lowers absenteeism and supports compliance with Greece’s latest building-air-quality guidelines (ΦΕΚ 1005/2020) for ventilation in workplaces and hospitality venues.
What technologies do you incorporate to achieve hospital-level indoor air quality?
Our Athens-based engineers design a multi-stage approach: 1) a MERV-13 or MERV-16 pre-filter to capture coarse particles and extend HEPA life; 2) a certified H14 HEPA or ULPA filter housed in a leak-proof metal cassette; 3) germicidal UV-C lamps (254 nm) installed downstream of the cooling coil to inactivate microbes on contact; 4) optional activated-carbon or potassium-permanganate modules for odour and VOC removal; and 5) a demand-controlled mechanical ventilation upgrade that brings in filtered outdoor air while recovering up to 85 % of heat with an energy-recovery ventilator (ERV). All components are tested to EN 1822 and ISO 16890 standards and monitored by real-time IAQ sensors linked to our cloud dashboard.
How often do hospital-grade filters and UV-C lamps need service?
Service intervals vary with usage and pollutant load, but typical schedules for Athens conditions are: pre-filters every 3–4 months, HEPA cartridges every 12–18 months, and activated-carbon cells every 6 months. UV-C lamps retain germicidal output for roughly 9,000 operating hours—about one year under continuous use—after which tube replacement is recommended. Our maintenance contracts include pressure-drop monitoring so filters are changed based on actual performance, not just the calendar, ensuring both air quality and energy efficiency are preserved.
Will installing hospital-grade filtration increase my energy bills?
High-efficiency filters add some resistance to airflow, which can raise fan energy by 5-15 %. However, we offset this through variable-speed ECM blowers, optimised ductwork, and energy-recovery ventilation. In practice, most clients see a net increase of only €3–€6 per month for a 120 m² home, or roughly 2 % of a typical commercial HVAC bill. Many find the savings gained from reduced sick days, improved productivity, and lower cleaning costs far outweigh the modest uptick in electricity consumption.
Can your hospital-grade solutions be retrofitted to existing HVAC systems in Athens, and what is the installation process?
Yes. Over 80 % of our projects involve retrofitting. We begin with an on-site audit that checks duct dimensions, static-pressure capacity, and air-change rate. Next we prepare a CAD-based insertion plan for the HEPA housing and any UV-C sections, making sure access doors meet EN 12237 leak criteria. Installation typically takes one day for a residence and two to three nights for a commercial space (to avoid business interruption). After commissioning, we conduct DOP (dispersed oil particulate) integrity testing and provide a written IAQ report certified by our TÜV-trained technicians, fulfilling insurance and regulatory documentation requirements in Greece.