- HEP HVAC
- Fresh-air Exchange

Fresh-air Exchange
Fresh-air Exchange | Ventilation and Air Quality | Heating and Air Conditioning | Beersheba Springs
A crisp mountain breeze belongs outside—not drafting through gaps or lingering as stale air in your living room. HEP’s fresh-air exchange systems continuously pull in Beersheba Springs’ clean, cool air, filter out pollutants, and balance humidity before circulating it through your home. Paired with our high-efficiency heating and cooling, you’ll notice fewer allergens, steadier temperatures, and lower utility bills, all while enjoying that just-opened-window feeling even when every window is closed.
Our certified technicians design, install, and maintain custom solutions that put ventilation and air quality first. From whisper-quiet ductwork to smart controls that adjust airflow with the weather, we give your family the comfort of pristine indoor air 24/7. Breathe deep—HEP has the fresh-air experts right here in Beersheba Springs.
FAQs
What is a fresh-air exchange system and why is it important in Beersheba Springs?
A fresh-air exchange system continually replaces a portion of your indoor air with filtered outdoor air while recovering much of the heating or cooling energy that would otherwise be lost. In Beersheba Springs, homes often stay closed up to keep out summer humidity and winter drafts, which can trap pollutants, moisture, and odors indoors. By providing controlled ventilation, a fresh-air exchanger dilutes contaminants such as pollen, cooking fumes, and volatile organic compounds (VOCs), creating a healthier indoor environment without sacrificing comfort or driving up utility bills.
What is the difference between a Heat Recovery Ventilator (HRV) and an Energy Recovery Ventilator (ERV), and which is better for our area?
Both HRVs and ERVs transfer heat from outgoing stale air to incoming fresh air, minimizing energy loss. An ERV also exchanges moisture, helping to control indoor humidity. Because Beersheba Springs experiences humid summers and mild, sometimes damp winters, ERVs are generally recommended—they reduce excess moisture in summer and add a bit of humidity in winter. However, well-insulated homes with specific humidity control equipment might still benefit from an HRV. A professional assessment will determine the best fit for your home.
How often do filters, cores, and other components need maintenance?
• Prefilters: Inspect monthly and replace or clean every 3–6 months, depending on dust and pollen levels. • HRV/ERV core: Vacuum or rinse every 6–12 months to maintain heat-exchange efficiency. • Fans and grilles: Wipe down when you clean the core to keep airflow unobstructed. • Annual tune-up: A technician should check airflow balance, clean drains, verify electrical connections, and ensure frost-protection controls work. Regular maintenance prolongs equipment life and keeps energy use low.
Can a fresh-air exchange system reduce humidity, allergens, and odors in my home?
Yes. By exhausting stale, moisture-laden air and supplying filtered outdoor air, the system helps balance indoor humidity, discouraging mold growth and musty smells. The built-in filters (MERV-rated or HEPA, if desired) capture pollen, dust, and other allergens common in the Cumberland Plateau region. Continuous, balanced airflow also removes lingering cooking and pet odors faster than spot ventilation alone.
Can an existing HVAC system be retrofitted with fresh-air ventilation, and what does installation involve?
Most homes can be retrofitted. A technician will: 1. Evaluate the home’s tightness, duct layout, and existing equipment. 2. Size an HRV/ERV based on square footage and occupancy. 3. Install dedicated small-diameter ductwork or tap into your current supply/return ducts while maintaining balanced airflow. 4. Provide wall or roof penetrations for intake and exhaust, using weather-protected hoods with bird and rodent screens. 5. Integrate controls so the unit runs continuously at a low speed and ramps up during high-pollution activities (cooking, showering, gatherings). Installation typically takes one to two days and causes minimal disruption.
What impact will a fresh-air exchange unit have on my energy bills?
Because HRVs and ERVs capture 60-80% of the heat (or cooling) that would otherwise be lost through traditional exhaust fans or window ventilation, their operating cost is low—usually the equivalent of running a couple of 60-watt light bulbs. In tightly sealed homes, they can actually lower overall HVAC costs by reducing excess humidity that makes air-conditioning work harder. Proper sizing, maintenance, and high-efficiency ECM motors further minimize electricity consumption, so most homeowners in Beersheba Springs see only a modest increase—often $3–$8 per month—while enjoying significantly better indoor air quality.