VIDEO: As the season starts to change and temperature continues to drop, it's important to make sure the heating equipment in your home is working properly. De Pere Fire Chief Alan Matzke said having your equipment serviced by a professional on a regular basis can help you avoid fires. "According to the National Fire Fighter Association the number one cause for fires is cooking, the number two cause is heating equipment," said Matzke. "We are talking about all forms of heating like furnaces, water heaters, and fire places." Matzke said last winter they responded to 30 calls where heating equipment was listed as the cause for the fire. He also says they investigated 35 incidents where carbon monoxide was present, another common problem during this time of year.