Stop Chimney Downdraft

Five ways to stop a cold downdraft in your fireplace.

Stop chimney downdraft.

It all depends on hot air rising the hotter the fire the faster the air rises. There are actually two distinct though related factors affecting chimney performance. Check these possibilities before going to the extent of making an h top. By peter hotton globe correspondent january 19 2014 12 00 a m.

Chimney downdrafts occur when something disrupts the natural air flow of a chimney. Using downdraft solutions like flue stretchers vacu stack chimney caps. Home our services chimney services downdraft problems why fireplaces work and how best to build them has been a topic of hot debate literally for centuries. Draft is the force behind flow while capacity is the capability to handle flow.

The air pressure in the lower zones can be lower than atmospheric pressure and if the fireplace is located in one of these zones the chimney may have a permanent downdraft. To stop chimney odor reverse the downdraft. Make sure there is sufficient air supply to your furnace and water heater. When a downdraft occurs exhaust from the fireplace that should be vented outside the home backs up into the living space making your indoor environment not only uncomfortable but dangerous.

5 solutions for chimney air leaks. If your appliances are not vented to the outside you may be reducing the air pressure making the problem worse. But remember that true downdraft is rare and providing that the manufacturers chimney specifications are followed in most cases negative pressure is caused by other factors. From the first stone rings stacked around the campfire to the modern factory built fireplaces with carefully engineered dimensions there has been a steady evolution of design parameters to.

To understand why a downdraft happens you need to know a little about the operation of the chimney. The current created draws air from the fireplace surround feeding the flames as it passes the fire. See how to stop downdraft in chimneys here chimney workings.