AFUE SAVINGS CALCULATOR
HVAC SERVICES
AFUE Cost Savings Calculator for North TX Residents
Heating your home shouldn’t drain your wallet every winter. With the AFUE Savings Calculator from Lyons Air & Heat, Rockwall homeowners can quickly see how upgrading to a more efficient furnace can deliver real cost savings and reduce heating expenses. This easy-to-use tool estimates your potential savings by comparing furnace efficiency ratings against the national average, giving you clear insight into how much you could lower your electricity bill and overall utility costs.
Lyons Air & Heat proudly serves Rockwall and nearby communities with expert HVAC, plumbing, and electrical services, helping you make energy-smart choices that pay off. Don’t wait to start saving. Call us now at (469) 224-1512 or reach out online to take control of your heating expenses today.
What Does AFUE Stand For?
AFUE stands for Annual Fuel Utilization Efficiency. It measures how effectively a furnace converts fuel into usable heat over a year. A higher AFUE rating means greater energy efficiency, with more fuel energy turning into heat for your home and less wasted. This rating helps you understand how much heat your furnace produces compared to the fuel it consumes, making it a key factor in managing heating costs and optimizing your system.
AFUE is sometimes confused with SEER, which stands for Seasonal Energy Efficiency Ratio. While AFUE focuses on heating efficiency, SEER measures the energy efficiency of a cooling system, like air conditioners and heat pumps. SEER ratings indicate how much cooling output you get for each unit of electricity used. (We also offer a SEER savings calculator so North Texas residents can get a rough estimate of how much they may save with higher efficiency air conditioners or heat pumps.)
In summary, both ratings help homeowners evaluate overall energy efficiency, but AFUE relates to heating, and SEER relates to cooling.
What is AFUE?
AFUE expresses heating efficiency as a percentage, comparing the heat produced to the fuel consumed by your furnace over a typical heating season. The AFUE efficiency rating shows how effectively your heating system converts fuel into usable heat for your home.
For example, an 80% AFUE furnace converts 80% of the fuel into heat, while the remaining 20% escapes unused as exhaust. A 95% AFUE system operates more efficiently, converting 95% of the fuel into heat. This higher AFUE rating means less fuel is wasted, directly lowering your heating costs.
Furnaces with higher AFUE efficiency ratings reduce fuel consumption and energy costs while maintaining consistent home comfort. Upgrading from an 80% AFUE furnace to a 95% AFUE model can result in significant savings on your heating bills over time by improving the overall efficiency of your heating system.
AFUE Rating Chart
Here is a simple AFUE (Annual Fuel Utilization Efficiency) rating chart that shows how furnace efficiency is categorized and what it means in terms of energy use and fuel waste:
| AFUE Rating | Efficiency Level | Description |
| 56-70% | Low Efficiency (Outdated) | Older systems that waste 30–44% of fuel; rarely used today. |
| 71-80% | Standard Efficiency | Basic mid-efficiency units; often seen in older homes. |
| 81-89% | Moderate Efficiency | Improved performance, but not Energy Star certified. |
| 90-95% | High Efficiency | Condensing furnaces; significantly lower fuel waste and reduced heating costs. |
| 96-98.5% | Very High Efficiency (Best) | Top-tier performance; Energy Star certified and optimal for cold climates. |
How is AFUE Calculated?
The formula for calculating AFUE is:
AFUE = (Total Heat Output ÷ Total Fuel Input) × 100
This calculation represents the percentage of fuel converted into usable heat for your home during the heating season.
For example, if your furnace consumes 100 units of fuel and produces 90 units of heat, the AFUE efficiency rating is 90%.
This straightforward calculation reflects your furnace’s heating efficiency and overall performance during heating hours, helping you understand how effectively your system uses fuel to keep your Rockwall, TX, home comfortable.
How Lyons’ AFUE Savings Calculator Works
Lyons’ AFUE energy savings calculator estimates your potential savings on heating costs over one year or more by comparing your current furnace to a more efficient model. The estimate represents immediate savings and long-term reductions in energy costs as you use a high-efficiency furnace.
The calculator factors in three primary factors to deliver accurate results:
- The average BTU used during Rockwall’s heating season
- The AFUE percentage rating of your existing heating system
- The AFUE percentage rating of the new furnace you are considering
By entering these details, the calculator computes potential savings in fuel consumption and actual costs, providing customers with a clear picture of their real savings. This energy savings calculator helps homeowners evaluate how upgrading to a high-efficiency gas furnace or other efficient heating systems can lower utility bills and heating expenses.
Try Our AFUE Energy Savings Calculator!
Use our energy savings calculator to discover how much you could save by upgrading your heating system. Simply enter your current furnace’s AFUE rating and the new model’s AFUE rating to see potential savings on heating costs.
Heating Savings
0 AFUE vs 0 AFUE
Savings per year
NOTE: This energy savings calculator is designed to provide a rough estimate for energy savings in homes located in North Texas. The results are not guaranteed and may vary based on your actual usage and system efficiency. Calculations are based on an estimated 77 million BTUs per season, which reflects typical conditions in the North Texas region.
How Many AFUE Do I Need?
Of course, the AFUE that’s right for you depends on several factors. However, let’s just consider a typical scenario for the average household in Rockwall, TX:
- Current furnace AFUE: 80%
- New furnace AFUE: 95%
- Average annual heating cost: $1,500
Savings = $1,500 × (1 – 80 ÷ 95) = $237.50 per year
This means upgrading to a high-efficiency furnace with a 95% AFUE rating could save a quarter of your heating costs annually. Depending on your heating hours and fuel consumption, you may even save nearly half of what you currently spend on heating. Over 10 to 15 years, these savings can compound into thousands of dollars, significantly offsetting the initial investment in a new, more efficient heating system.
When to Consider Upgrading Your Furnace in Rockwall, TX
Signs it’s time to replace your HVAC equipment include:
- Your furnace is 15 years old or older
- Heating costs have increased noticeably
- Home temperatures feel uneven or inconsistent
Upgrading to a newer high-efficiency furnace provides several advantages. These models offer improved heating efficiency, leading to lower utility bills and reduced energy costs. They also deliver better indoor comfort by maintaining consistent temperatures throughout your home and operate more quietly than older systems. Investing in a high-efficiency furnace helps reduce your overall energy use while enhancing your Rockwall home’s heating performance.
Rebates for Furnaces With High Efficiency Ratings
Did you know that Rockwall homeowners may also qualify for Texas energy rebates when upgrading to furnaces with high-efficiency AFUE ratings? These rebates help reduce upfront costs and increase cost savings by improving the return on investment for new, energy-efficient heating systems. Taking advantage of available incentives can lower overall heating costs and make upgrading to a high-efficiency furnace more affordable.
To learn about Texas energy rebates and maximize savings, speak with an experienced Rockwall, TX furnace installation pro at Lyons today!
Why Choose the Rockwall Heating and Cooling Pros at Lyons?
At Lyons Air & Heat, we provide comprehensive heating, cooling, plumbing, and electrical services throughout Rockwall, TX and the nearby DFW communities. Our team handles furnace installation, repairs, and routine maintenance, focusing on heating efficiency and delivering honest advice. With transparent pricing and deep local knowledge, we recommend energy-efficient solutions tailored to your home’s unique needs and budget.
Choosing Lyons means partnering with experienced technicians dedicated to your comfort and committed to providing customers’ real savings on energy costs. Our Rockwall heating and cooling experts guide you in making informed decisions to improve your system’s performance, lower utility bills, and maximize long-term energy savings.
Ready to Upgrade Your Furnace? Let’s Talk – Call Lyons Air Conditioning & Heating Today!
Upgrading your furnace to a high-efficiency model can significantly reduce your heating costs while improving comfort throughout your Rockwall home. We’re happy to provide tools like our AFUE Savings Calculator help you understand your potential energy savings and make informed decisions about your heating system.
At Lyons Air & Heat, we don’t stop at heating. We also offer expert repair services and installation for new air conditioners and heat pumps, as well as emergency plumbing and electrical services in Rockwall, TX, to keep your entire home running smoothly.
If you’re ready to save money and improve your home’s comfort, call Lyons Air & Heat at (469) 224-1512 or contact us online to schedule your appointment today.
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