Sizing a furnace can be a little more complicated than you might think. You have to consider several factors, including your home’s square footage, climate zone, insulation, and air leakage. Here are the general steps to determine the right furnace size: 1. Calculate the square footage of the home: If you don’t know your home’s square footage, you can measure the length and width of each room, then multiply them. Add up every room to get the total square footage. 2. Determine the climate zone: Different regions have different heating requirements, and the furnace size needed for a home in a colder climate will be different from a home in a warmer climate. Lubbock is unique in that it has short but very cold winters. The team at Earl’s has the expert insight to know what works best in our climate. 3. Consider insulation and air leakage: A well-insulated home with minimal air leakage will require a smaller furnace than a poorly insulated one with drafts. Now is also a good time to address any air duct repairs you may need! 4. Consult with a professional: A licensed HVAC contractor can assess your home’s heating needs and recommend the appropriate furnace size based on these considerations and additional factors, such as your home’s layout, your budget, and your family’s usage habits. It’s important to choose the right size of furnace to ensure optimal energy efficiency, comfort, and longevity. A furnace that’s too small will struggle to keep up with the demand for heat, while a furnace that’s too large will waste energy and cost more to operate.