Vacu-Stacks / Chimney Wind Problems
Various names: vacu-stack, wind cap, chimney wind cap, back draft cap, wind beater caps.
Uses: prevent wind-induced downdrafts, dynamic wind loading, wind blanketing and other issues concerning fireplaces on a windy day.
Material used: Stainless steel.
Why purchase: If you notice that your chimney has drafting issues on windy days, this vacu-stack will likely solve the problem.
Here’s how it works: When wind flows around the vacu-stack’s unique design, wind speeds increase which creates a partial vacuum. This vacuum then pulls flue gases up and out of the chimney, thus preventing wind-induced downdraft and the resulting infiltration of smoke, odor, and flue gas into your home. This cap also functions as a conventional chimney cap by protecting the chimney from rain, snow, debris, and animals.