- HEP Heat and Air
- Heat Recovery Ventilators

Heat Recovery Ventilators
Heat Recovery Ventilators | Ventilation and Air Quality | Heating and Air Conditioning | Caryville
Breathe easier in Caryville with HEP’s cutting-edge heat recovery ventilators, designed to pull in a steady stream of fresh outdoor air while reclaiming up to 90% of the heat you’ve already paid for. By quietly exchanging stale indoor air with crisp, filtered air, our systems reduce humidity, curb allergens, and lighten the load on your existing HVAC equipment—meaning lower utility bills and year-round comfort without compromise.
From the first consultation to the final airflow test, our friendly, NATE-certified technicians handle every detail so you can focus on what matters most. Whether you’re upgrading an older home or fine-tuning a new build, we’ll customize a solution that prioritizes ventilation and air quality while fitting seamlessly into your daily routine. Ready to turn your home into a haven of clean, efficient air? Give HEP a call today and feel the difference tomorrow.
FAQs
What is a heat recovery ventilator (HRV) and how does it work?
A heat recovery ventilator is a mechanical ventilation device that exchanges stale indoor air with fresh outdoor air while transferring heat between the two airstreams. As warm, stale air leaves your Caryville home, it passes through a heat-exchange core that captures most of its heat and transfers it to the incoming fresh, cooler air. In summer, the process reverses, helping keep conditioned air inside. This dual action improves indoor air quality and reduces the energy required to heat or cool incoming air.
Why is proper ventilation important for indoor air quality in Caryville homes?
Caryville’s humid subtropical climate often means homeowners keep their windows closed and rely heavily on air-conditioning. Without adequate ventilation, indoor pollutants—such as cooking fumes, cleaning chemicals, and off-gassing from furnishings—build up. An HRV continuously exchanges stale indoor air for filtered outdoor air, reducing allergens, odors, and excess humidity while helping prevent mold growth common to East Tennessee’s moist environment.
How much energy can I expect to save with an HRV compared to traditional exhaust-only ventilation?
Traditional exhaust fans expel conditioned air directly outdoors, forcing your HVAC system to re-heat or re-cool incoming air. An HRV recovers 60–90% of that lost heat (or cooling) energy before it escapes. In practical terms, studies show homeowners can cut ventilation-related heating and cooling costs by 15–25%, depending on house tightness and HRV efficiency. In Caryville’s climate, where heating and cooling loads are fairly balanced, savings are typically at the higher end of that range.
How often does an HRV need maintenance or filter changes?
Most HRVs have easily accessible, washable filters that should be cleaned every 2–3 months and replaced annually if disposable. The heat-exchange core should be inspected and cleaned once or twice a year—usually before the peak heating and cooling seasons in Caryville (early spring and early fall). Fans, drains, and outdoor grilles should also be checked for dust, debris, or insect nests. Regular maintenance maximizes airflow, energy recovery, and equipment life.
Can an HRV be integrated with my existing heating and air-conditioning system?
Yes. HRVs are designed to work alongside forced-air furnaces, heat pumps, and mini-splits common in Caryville homes. They can be ducted independently or tied into your main HVAC supply and return ducts, depending on house layout, equipment capacity, and budget. A licensed HVAC technician will perform a ventilation assessment—including airflow balancing—to ensure your HRV works harmoniously with your current system and meets ASHRAE ventilation standards.
How do I determine the right HRV size and what is the installation process like?
The correct HRV capacity is based on your home’s floor area and occupancy—often calculated at 0.35 air changes per hour or about 7.5 CFM (cubic feet per minute) per person. For a typical 2,000-sq-ft Caryville home with four occupants, an HRV rated around 150–200 CFM is common. During installation, a technician mounts the HRV unit in a mechanical room or attic, installs insulated supply and exhaust ducts to the outdoors, connects distribution ductwork or ties into existing ducts, and sets up controls. Final steps include balancing airflow with specialized instruments to ensure the system delivers the designed air exchange rate without pressurizing or depressurizing the house.