A loud banging noise from your furnace can be alarming and may indicate several underlying issues. Common causes include loose parts, expanding metal, or even a delayed ignition. Understanding the specific reason behind the noise is crucial for effective troubleshooting and ensuring your system operates safely. Regular maintenance can help prevent such noises, but if you're hearing this sound, it’s essential to investigate further. Ignoring it could lead to more significant problems down the line. Ask Improvi.ai for personalized guidance on diagnosing and resolving furnace noises to keep your home warm and safe.