Ben Koons DIY Net Zero Home Old Snowmass
Ben Koons working on his net zero home’s heat recovery ventilator (HRV), a key component in addressing air quality in a tight home. PC: Daniel Bayer

Did you know that ventilation accounts for up to 30% of energy used to condition air in a building? We often address the energy cost of heating or cooling but we rarely think what it takes to bring fresh air into our buildings. Balanced ventilation is more than just saving energy. When paired with heat recovery technology, it keeps your space the temperature you want inside and pollution outside.

Energy recovery ventilators (ERV) and heat recovery ventilators (HRV) save energy and make your space comfortable and healthy

The Lowdown

Ventilation is a critical aspect of your home’s performance. Sometimes when we seal up a building to make it more energy efficient, we can make it unhealthy for the occupants. In older leaky homes, plenty of air from the outdoors inadvertently can make its way in through the cracks, so providing a dedicated supply of fresh air isn’t as much of a concern. Once all those leaks are sealed, it’s vital to replace that air source with a balanced ventilation system. One of the most common types of systems that provides us fresh air without compromising energy efficiency is the energy recovery ventilator (ERV). This device pulls in fresh air while exhausting old stale air. As a result, it recovers some of the heat that would normally be lost.

Marty inspects an ERV in his net-zero home. PC: Daniel Bayer


CORE Residential Rebates

CORE Commercial Rebates

CORE Rebate: 25% of project cost up to $500

  • Home Energy Assessment required
  • Blower door test shows at or below 0.35 Natural Air Changes per Hour (NACH)
  • Must be ENERGY STAR certified

Utility rebates may be available from:
Aspen Electric | Holy Cross Energy | Glenwood Springs Electric | Black Hills Energy | Xcel Energy