Downdraft Problems Chimneys

Wind can enter short chimneys more easily than tall chimneys.

Downdraft problems chimneys.

The caps might create swirling air currents that can result in a downdraft. 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. Another possible cause of downdraft is an improperly sized flue liner. Also nearby buildings may interfere with the airflow in the vicinity of the fire.

Downdrafting occurs when wind blows down the chimney and into your home causing it to feel breezy and cold or hot depending on the season. Clean the chimney a heavy accumulation of creosote in a chimney can block the flue or drastically restrict its effective size. The size of the liner can be checked by measuring the size of the flue at the top of the chimney. 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.

The h top is the only cowl which may reduce the effects of true downdraft. The bluestone caps you placed over each chimney could also be the culprit here. Plug the communication cable back into the control and downdraft. You should be able to.

Unbeknownst to many homeowners chimney height plays a role in fireplace downdrafts. We have all the right chimney services to identify and resolve current issues while preventing future chimney downdraft problems. Unplug the communication cable from the downdraft control. A chimney downdraft can also cause smoke to spill into the room during windy days.

If your chimney is just a few inches tall when measured from the surface of your home s roof to the very top of the chimney it may create a downdraft. Turn the home circuit breaker to the unit off for 10 seconds then back on again then retest the unit operation. A large tree near the unit for example can cause poor air circulation resulting in the downdraft in the chimney. Check these possibilities before going to the extent of making an h top.

Increasing the height of the upper part often solves the problem as the tall chimneys have better air currents that low. Solving chimney draft problems a. Make sure nothing is prohibiting path of downdraft chimney. A window fills a hole in a wall that leads to the outdoors the potential for air leaks.