As temperatures drop, a reliable furnace becomes essential for keeping your home warm and safe. However, like any appliance, furnaces can break down or lose efficiency over time. Understanding how to troubleshoot and maintain your furnace can save money, prevent discomfort, and even protect your family from serious hazards. This guide covers everything you need to know about furnace repair—from DIY tips to when it's time to call a professional. 1. Common Furnace Problems Expl