As winter sets in, ensuring your heater is operating efficiently becomes crucial for maintaining comfort and keeping energy costs in check. But how can you tell if your heater is truly energy efficient? Here’s a comprehensive guide to help you assess its performance and make informed decisions about your heating system. Signs Your Heater Is Energy Efficient High AFUE Rating: The Annual Fuel Utilization Efficiency (AFUE) rating measures the efficiency of a furnace. Modern energy-efficient heaters typically have an AFUE rating of 90% or higher. This means they convert 90% of the fuel into heat while wasting only 10%. If your heater’s AFUE rating falls below this threshold, it might be time to consider an upgrade. Steady Energy Bills: If your heating costs have remained consistent despite cold weather, it’s a good indication that your heater is operating efficiently. Sudden spikes in your energy bill could signal that your system is working harder than necessary, which is often a sign of...