Heating FAQ swanheating Residential Heating Frequently Asked Questions How Does My Heating System Work? How Often Should I Replace My Furnace? How Often Do I Need to Replace My Furnace Filter? What Are Some Indications That I Should Repair or Replace My Furnace? What Factors Should I Consider When Shopping for a New HVAC System? How Much Should I Expect to Spend on a New Furnace? What Are Some Helpful Tips for Maintaining My Furnace? What Are the Components of a Heating System in an "All Electric" Home? My Furnace or Heat Pump Is Not Working. What Should I Check Before Calling for Repair? Is It Better to Repair or Replace My Furnace? How Is Gas and Oil Furnace Efficiency Determined? How Do I Choose the Right Gas Furnace? Is It Best to Replace My Air Conditioner and Heat Pump at the Same Time? How Do I Choose the Right Thermostat? What Is an Annual Fuel Utilization Efficiency Rating? Is There a Minimum AFUE Rating for Gas Furnaces? How Can I Determine the AFUE Rating of My Furnace?