Apply To HVAC Jobs

HVAC Tactician

Your Guide To HVAC Parts & Repair
Info Menu
Comparing Furnace Efficiency: 80%, 92%, 96%, 97% – Which is Right for You?

Comparing Furnace Efficiency: 80%, 92%, 96%, 97%

Table of Contents

When it comes to heating your home, choosing the right furnace is essential. One of the most important factors to consider is furnace efficiency. Furnace efficiency is measured by the Annual Fuel Utilization Efficiency (AFUE) rating, which signifies the percentage of fuel a furnace converts into heat. The higher the AFUE rating, the more efficient the furnace. In this article, we will compare furnace efficiency ratings of 80%, 92%, 96%, and 97% to help you decide which is right for you.

Understanding Furnace Efficiency Ratings

Before diving into the different furnace efficiency ratings, it is important to understand what they mean. An 80% AFUE rating, for example, means that 80% of the fuel is converted to heat, while the remaining 20% is lost through the exhaust. On the other hand, a 97% AFUE rating indicates that only 3% of the fuel is wasted, making it extremely efficient.

While higher efficiency ratings may seem like the obvious choice, it’s important to consider your specific heating needs, budget, and other factors before making a decision.

Furnace Efficiency Ratings: Pros and Cons

80% AFUE Furnaces

80% AFUE furnaces are the most common type of furnace found in older homes. They are typically less expensive than higher efficiency models, making them a popular choice for homeowners on a budget. While they may not be as efficient as newer models, they still provide ample heat and can help lower energy bills compared to older, less efficient systems.

92% AFUE Furnaces

92% AFUE furnaces are considered high-efficiency models. They offer a significant improvement in energy efficiency compared to 80% AFUE furnaces. This means that less fuel is wasted, resulting in lower energy bills. However, 92% AFUE furnaces are generally more expensive upfront than their lower efficiency counterparts.

96% AFUE Furnaces

96% AFUE furnaces are even more efficient than 92% AFUE models. These furnaces use advanced technology to maximize energy efficiency, resulting in lower energy consumption and even greater savings on heating bills. While they come with a higher price tag, the long-term energy savings can offset this initial cost.

97% AFUE Furnaces

97% AFUE furnaces are the most efficient models available on the market. They are designed to waste as little fuel as possible, ensuring maximum energy efficiency. These furnaces often come with additional features and advanced technology, further improving their performance. While they are the most expensive option, the long-term energy savings and comfort they provide can make them a worthwhile investment.

Factors to Consider

When deciding on the right furnace efficiency for your home, it’s important to consider several factors:

  • Climate: If you live in a colder climate, you may want to consider a higher efficiency furnace to ensure your home stays warm and comfortable during the winter months.
  • Budget: Evaluate your budget and determine how much you are willing to spend on a new furnace. While higher efficiency models can result in long-term energy savings, they may not be affordable for everyone.
  • Energy costs: Consider the current cost of energy in your area. If energy prices are high, investing in a higher efficiency furnace may deliver greater long-term savings.
  • Size of your home: The size of your home will impact the size and capacity of the furnace you need. Ensure you choose a furnace that is appropriately sized for your home.
  • Long-term plans: Consider your long-term plans for your home. If you plan on moving in the near future, it may be more practical to choose a furnace with a lower efficiency rating.


  1. What is AFUE?

    AFUE stands for Annual Fuel Utilization Efficiency and measures the amount of fuel a furnace converts into heat. It is expressed as a percentage, with higher percentages indicating greater efficiency.

  2. Can I save money by upgrading to a high-efficiency furnace?

    Yes, upgrading to a high-efficiency furnace can result in long-term savings on energy bills.

  3. Are high-efficiency furnaces worth the higher upfront cost?

    While high-efficiency furnaces may have a higher upfront cost, the long-term energy savings can offset this initial expense.

  4. Do I need a high-efficiency furnace if I live in a mild climate?

    The climate of your region can impact the efficiency of your furnace. If you live in a mild climate, a lower efficiency furnace may be sufficient to meet your heating needs.

  5. How do I determine the right size furnace for my home?

    Consult with a professional HVAC contractor who can perform a load calculation to determine the appropriate size furnace for your home.

Related Posts