Downdraft Problems Chimneys

A chimney downdraft can also cause smoke to spill into the room during windy days.

Downdraft problems chimneys.

Many different issues including negative pressure could be causing your chimney downdraft problem. Solving chimney draft problems a. Turn the home circuit breaker to the unit off for 10 seconds then back on again then retest the unit operation. The caps might create swirling air currents that can result in a downdraft.

Clean the chimney a heavy accumulation of creosote in a chimney can block the flue or drastically restrict its effective size. Unplug the communication cable from the downdraft control. Unbeknownst to many homeowners chimney height plays a role in fireplace downdrafts. Even minor accumulations increase.

Windows doors above the neutral pressure plane. Another possible cause of downdraft is an improperly sized flue liner. 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. Make sure nothing is prohibiting path of downdraft chimney.

You should be able to. Also nearby buildings may interfere with the airflow in the vicinity of the fire. Increasing the height of the upper part often solves the problem as the tall chimneys have better air currents that low. Check these possibilities before going to the extent of making an h top.

A large tree near the unit for example can cause poor air circulation resulting in the downdraft in the chimney. A window fills a hole in a wall that leads to the outdoors the potential for air leaks. The bluestone caps you placed over each chimney could also be the culprit here. 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.

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. Wind can enter short chimneys more easily than tall chimneys. Plug the communication cable back into the control and downdraft. 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.