- HEP Heat and Air
- Hospital-grade HEPA Filtration

Hospital-grade HEPA Filtration
Hospital-grade HEPA Filtration | Ventilation and Air Quality | Heating and Air Conditioning | Heiskell
Imagine breathing the same crisp, contaminant-free air you’d find in a surgical suite—right in your Heiskell home or business. HEP installs state-of-the-art, hospital-grade HEPA filtration seamlessly into your existing heating and air conditioning system, trapping 99.97% of airborne particles as small as 0.3 microns. From pollen and pet dander to bacteria and seasonal viruses, our advanced filters work around the clock so every inhale is refreshing and every exhale brings peace of mind.
Pair that filtration power with our NATE-certified technicians and smart airflow design, and you get a custom solution that elevates ventilation and air quality without spiking your energy bills. Whether you’re upgrading a single room or outfitting an entire facility, HEP delivers whisper-quiet comfort, rigorous air purification, and reliable service rooted right here in Heiskell—because you deserve air that cares as much as we do.
FAQs
What is hospital-grade HEPA filtration and how does it improve indoor air quality?
Hospital-grade HEPA (High-Efficiency Particulate Air) filters capture at least 99.97 % of airborne particles down to 0.3 microns—the size range that includes bacteria, viruses, mold spores, dust, pollen, and smoke. When installed in an HVAC system, the filter forces all return air through a dense mat of interlaced glass fibers, trapping contaminants before the air is conditioned and recirculated. The result is significantly cleaner, healthier air with noticeably fewer allergens, odors, and airborne pathogens compared with standard residential filters (MERV 8–13).
Why is hospital-grade HEPA filtration beneficial for homes and businesses in Heiskell?
Heiskell’s humid subtropical climate encourages mold growth and higher pollen counts for much of the year. In addition, proximity to Knoxville’s industrial corridor can increase fine-particle pollution on certain days. A hospital-grade HEPA system removes these environmental irritants, reducing allergy and asthma symptoms, limiting mold colonization in ductwork, and creating a safer environment for vulnerable groups such as young children, seniors, and anyone with respiratory conditions.
How is a hospital-grade HEPA filter integrated into my existing heating and air-conditioning system?
Most installations use a bypass configuration: a separate, sealed cabinet containing the HEPA filter is connected to the supply or return plenum with small rigid ducts. A dedicated fan draws a portion of the HVAC airflow through the HEPA filter and then injects the purified air back into the main supply trunk. This design prevents excessive static pressure on the main blower, maintains proper airflow to all rooms, and can be retrofitted into most residential and light-commercial systems without replacing your furnace or air handler.
What maintenance does a hospital-grade HEPA filter require and how often should it be replaced?
Unlike standard 1-inch filters that need monthly changes, hospital-grade HEPA cartridges typically last 12–24 months, depending on operating hours and particulate load. We recommend quarterly inspections by a qualified technician, who will: (1) check differential pressure across the filter to gauge loading, (2) verify cabinet seals and gaskets to prevent bypass leaks, and (3) clean or replace any pre-filters that capture larger dust to extend HEPA life. Visual inspection alone is not reliable; pressure readings ensure the filter is still functioning at 99.97 % efficiency.
Will adding hospital-grade HEPA filtration increase my energy bills?
When installed in a properly designed bypass cabinet, the additional fan draws only 50–150 watts—roughly the same as a standard light bulb. The main HVAC blower sees little to no added resistance, so heating and cooling efficiency remain virtually unchanged. Overall, most homeowners notice an energy cost increase of less than 1–2 % annually, far outweighed by the health benefits and the potential reduction in sick days, allergy medication, and cleaning frequency.
Do I need professional installation, and what should I expect during the upgrade?
Yes. Hospital-grade HEPA filtration requires airtight sealing, correct duct sizing, electrical wiring for the auxiliary fan, and calibration of airflow to avoid pressure imbalances. A licensed HVAC technician will: (1) perform a load calculation and airflow assessment; (2) select a HEPA unit sized for your home or facility; (3) install the cabinet, duct connections, and fan; (4) test for leaks and verify proper pressure drop; and (5) provide a maintenance schedule. The retrofit typically takes 4–6 hours with minimal disruption, and no drywall or major construction is needed.