Downdraft Problems Chimneys

Another possible cause of downdraft is an improperly sized flue liner.

Downdraft problems chimneys.

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. Increasing the height of the upper part often solves the problem as the tall chimneys have better air currents that low. A large tree near the unit for example can cause poor air circulation resulting in the downdraft in the chimney. 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.

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 size of the liner can be checked by measuring the size of the flue at the top of the chimney. Plug the communication cable back into the control and downdraft. Wind can enter short chimneys more easily than tall chimneys.

Also nearby buildings may interfere with the airflow in the vicinity of the fire. We have all the right chimney services to identify and resolve current issues while preventing future chimney downdraft problems. The h top is the only cowl which may reduce the effects of true downdraft. Even minor accumulations increase.

Many different issues including negative pressure could be causing your chimney downdraft problem. Windows doors above the neutral pressure plane. Unplug the communication cable from the downdraft control. A chimney downdraft can also cause smoke to spill into the room during windy days.

Clean the chimney a heavy accumulation of creosote in a chimney can block the flue or drastically restrict its effective size. Check these possibilities before going to the extent of making an h top. 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.

A window fills a hole in a wall that leads to the outdoors the potential for air leaks. Turn the home circuit breaker to the unit off for 10 seconds then back on again then retest the unit operation. You should be able to. Solving chimney draft problems a.