Know who you hire to be certain of safe, clean chimney

One of the best parts of winter is spending time in front of a cozy fireplace, especially when there is snow and ice outside.

For many, fireplaces are a source of both comfort and heat, but regular maintenance is key to avoid problems, up to and including fires that spread to the rest of the house.

"I asked him if this was supposed to happen," she said. "He said, 'no,' and that opening the door will fix the problem."

Mr. Smokestack cleans chimneys in intervals and workers use a flashlight, camera and vacuum to monitor and collect dust.

Markey said any chimney cleaning company should be certified through the Chimney Safety Institute of America (CSIA). The group sets certain requirements and a code of ethics.

A thorough inspection and cleaning takes place inside the house and out, Markey said. The whole process should take up to two hours.