The completely ductless, through-the-wall, high-efficiency Energy Recovery Ventilator (ERV) is the single room air recovery ventilation system designed to continuously remove stale air from any space while simultaneously bringing in fresh air from outside. It doesn't need ducts running to each and every room in the house. This is a quick and easy fix to freshen up your home and target specific rooms that need the fresh air more so than others. A great reliable and long-term solution for improving air quality in your home. You can transform your space's feel and comfort with our simple installation and operating instructions. Tailor-made for open concept houses, condos or mid-size rooms. Incredibly quiet. Once you set it, you'll forget it's there but will always appreciate the wonderful fresh air. VY Build ERVs, Breath better, live better.