Furnace ratings best to worst


There are several types of furnaces with different rating systems. Here are the most common furnace ratings, listed from best to worst:

  1. Annual Fuel Utilization Efficiency (AFUE): AFUE measures the efficiency of a furnace in converting fuel to heat throughout a heating season. The higher the AFUE rating, the more efficient the furnace. The best furnaces have 95% or higher AFUE ratings, while older or less efficient models may have ratings as low as 80%.
  2. Heating Seasonal Performance Factor (HSPF): HSPF rates the efficiency of air-source heat pumps, which provide heating and cooling. The higher the HSPF rating, the more efficient the heat pump.
  3. Seasonal Energy Efficiency Ratio (SEER): SEER is used to rate the efficiency of air conditioners and heat pumps in cooling mode. The higher the SEER rating, the more efficient the system.
  4. Energy Star certification: Energy Star is a voluntary certification program that indicates that a furnace or other heating/cooling system meets certain energy efficiency guidelines set by the U.S. Environmental Protection Agency. Energy Star-certified systems are typically more efficient than standard models.
  5. British Thermal Units (BTUs): BTUs measure the heat a furnace can produce. The higher the BTU rating, the more heat the furnace can produce. However, a furnace with too high a BTU rating may not be efficient, as it may be oversized for the home it is heating.

It’s important to note that the best furnace for your home will depend on factors such as your climate, the size of your home, and your energy needs. It’s best to consult a heating and cooling professional to determine the best furnace for your specific situation.