Wind-directional chimney caps (sometimes referred to as draft-increasing chimney caps) are designed to withstand high wind conditions, prevent the wind from going down your flue and causing cold downdrafts, and utilize the wind to create stronger updrafts. These chimney caps help your fireplace vent properly by forcing smoke upward and out of your chimney.
These benefits are possible because of the special design of the wind-directional chimney cap, which forces wind around the top of the chimney cap and does not let it enter the flue. The air velocity created by the wind reduces the static pressure above the chimney, creating a partial vacuum and forcing the smoke inside the flue upward. You can expect a better updraft the harder the wind blows.
Wind-directional chimney caps are an excellent option if you have issues with wind-induced downdrafts or have a draft-heavy fireplace. Wind-directional chimney caps are also a common choice for factory-built metal chimneys. We carry wind-directional chimney caps that are ideal for all conditions and different types of chimneys.
Wind-directional chimney caps may require regular cleaning to remove the deposits and smoke that accumulate in the spinning turbines.
Keep in mind that wind-directional chimney caps will only reduce drafts that are related to wind — not drafts related to chimney top pressurization (caused when tall objects surround your chimney) or air inversion.
Air Cooled Chimney Caps
Are meant to be installed on an air cooled chimney pipe. Air cooled chimney pipes have an air space between the outer and inner walls of the pipe. The air space is visible if you look at the top of the chimney pipe. If no visible air space than you need a non air cooled chimney cap
Non Air Cooled Chimney Caps
Need to be installed on solid pack chimney pipes meaning that there is no visible air space as it’s a solid chimney pipe. The photos at the top of the page help show you what a solid pack chimney pipe looks like compared to a solid chimney pipe.
Fireplace Chimney Caps
Square and Rectangle Caps are meant to be installed on top of a terracotta flue tile. Just measure the outside dimension to find the length and width. Once you have this measurement you can match up closely to the correct size. You just need to be within 1” of the selected size for it too fit.