The size of the heating system you need for your home depends on several factors, including the square footage of your home, the insulation and air sealing of your home, and your heating requirements. A licensed HVAC professional can conduct a load calculation to determine the correct size heating system for your home. An undersized system may not provide adequate heating, while an oversized system will result in wasted energy and higher costs. It is important to get a professional assessment to ensure that you choose the right size heating system for your home, for maximum comfort and efficiency.