Common Ventilation Questions for Air Quality in 2026

Ensuring optimal indoor air quality (IAQ) is crucial for health and comfort. In 2026, understanding effective ventilation practices is more important than ever.

What is the recommended ventilation rate for residential buildings?

The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) recommends that homes receive 0.35 air changes per hour, but not less than 15 cubic feet of air per minute (cfm) per person. (epa.gov)

How do Energy Recovery Ventilators (ERVs) and Heat Recovery Ventilators (HRVs) differ?

ERVs transfer both heat and moisture between exhaust and supply air, making them ideal for hot-humid climates. HRVs transfer only heat, making them better for cold climates where you want to exhaust excess indoor moisture. (hvacbase.org)

What are the benefits of mechanical ventilation systems?

Mechanical ventilation systems, such as ERVs and HRVs, provide controlled airflow, reducing indoor pollutants and maintaining humidity levels. They recover energy from outgoing air, improving energy efficiency. (hvacbase.org)

How can I improve ventilation in a tightly sealed home?

In tightly sealed homes, mechanical ventilation is essential. Options include exhaust, supply, balanced, HRV, and ERV systems. Regular maintenance, such as cleaning filters and ensuring unobstructed airflow, is also important. (rhcchvac.com)

What are the signs that my home needs better ventilation?

Indicators include condensation on windows, musty odors, and rooms that remain damp for extended periods. Persistent cooking smells and stuffy bedrooms are also common signs. (rhcchvac.com)

By addressing these common questions, you can take proactive steps to enhance your home's indoor air quality in 2026.