Signs you might need a new heating system include frequent repairs, rising energy bills, inconsistent heating, strange noises, and poor air quality. An old system, especially one over 15 years old, might struggle to maintain comfortable temperatures or could break down frequently, indicating it's time for an upgrade. Additionally, if your system uses outdated technology or you notice visible signs of wear and tear, such as rust or cracks, it's likely time to consider a new, more efficient heating solution to ensure your home remains comfortable, safe, and energy-efficient.