What is Draft

What is draft? Draft is important to combustion efficiency and safe combustion. If draft isn’t adequate, chimneys can backdraft or spill.  We measure draft between between two places in a combustion heating system. For example, we measure draft between the a...

LBNL “Smart Ventilation” Research

Lawrence Berkeley National Lab (LBNL) scientists, led by Max Sherman and Iain Walker, are investigating whole-house ventilation options to support California’s Zero Net Energy Homes initiative. This research project is called Smart Ventilation for Advanced...

Installing High-Performance Windows

My complements to the European high-performance window manufacturers for providing built-in sills for their windows. I hope that North American high-performance window manufacturers soon provide built-in sills. The built-in sills, along with block-frame window...