As Yakima’s fall temperatures dip into the 40s°F at night, firing up your furnace for the first time can feel like a warm welcome to the season. However, those initial startups often come with odd noises that can raise concerns. While some sounds are normal after months of downtime, others signal that your heating system needs attention to keep your Yakima home cozy all winter. At ThermAll Heating, Cooling & Electric, we’re here to help you understand what those noises mean and when to call a professional to avoid unexpected breakdowns.