Energy recovery ventilator / Green Building & Sustainable Home Renovation Information & Advice

Zehnder ERV installed in a laundry room
HRV and ERV

Top HRV and ERV Ventilation Units: 2026 Buyer's Guide for Homeowners and Pros

...energy efficient one. And new contaminants can be introduced as air passes through some pretty sketchy insulation materials or mold that can sometimes be found in older homes.  Integrating a high performance Heat Recovery Ventilator (HRV) or Energy Recovery Ventilator (ERV) into new builds and renovations is essential....

Walls and Roofs

Why Your Walls Get Wet: A 'Building Science Made Easy' Guide to Understanding the Dew Point

...Recovery Ventilator (HRV) or Energy Recovery Ventilator (ERV) is functioning properly and the filters are clean. These systems are designed to swap stale, humid indoor air with fresh, dry outdoor air while keeping the heat inside. Deploy a dehumidifier: In basements or particularly damp zones, a properly sized dehumi...

How to choose between an HRV and ERV system
HRV and ERV

Choosing between an HRV and an ERV

...Energy recovery from exhaust air is becoming common place in cold regions, and two types of equipment can do this - an HRV (Heat Recovery Ventilation) and an ERV (Energy Recovery Ventilation.) Both HRVs and ERVs are somewhat new to mainstream home construction, and can often be confused. In an effort to clear that up, ...