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How to Determine Whether Your Heater or Furnace Is Energy Efficient

How to Determine Whether Your Heater or Furnace Is Energy Efficient

HVAC technology with high efficiency has been identified as one of the most effective strategies to lower your power use. Energy-efficient HVAC units provide the following benefits –

  • Lower utility expenditures.
  • Improved indoor climate management.
  • Lower carbon footprint.
  • Efficient and noise-free operation.
  • Longer unit lifespan.

You need to upgrade to greener HVAC technology or if your furnace is currently efficient. Here are a few methods to spot a high-efficiency furnace –

The annual fuel utilization efficiency (AFUE) rating should be at least 80%.

The furnace unit is the correct size for your home.

The system is less than 15 years old.

Your electricity bills are consistent and not rising.

Your home’s heating is distributed evenly throughout.


AFUE is the short form of Annual Fuel Utilization Efficiency and is the best way to determine whether or not your heater is energy efficient. It assesses how effectively your heater transforms fuel into energy. The higher your heater’s AFUE %, the more efficient it is. If the AFUE is 98%, it means that your heater can convert 98% of the fuel to energy.

The remaining 2% of the fuel’s energy is wasted here. The AFUE rating of older heaters might be as low as 56%, wasting 44% of the energy. This rating can be found in the user manual or on a label inside the furnace’s cabinet. An AFUE value of 80% has been determined to be adequate for a normal temperature climate.


Knowing the AFUE percentage before purchasing the heater is a sensible option, but this is not the end of the problem. A heater cannot provide the same level of performance for the duration of its life. A heater’s average life expectancy is 15 – 20 years. Despite purchasing a heater with a high AFUE rating, the rating drops by 5% every year. Maintenance can provide the desired service, but it cannot extend the heater’s lifespan. As a result, furnace replacement in Saratoga after a given period of time is required.


Energy bills fluctuate naturally due to seasonal changes, increases in electricity bills, or changes in one’s living situation. You can compare your electricity bills from month to month to see whether or not your heater is losing efficiency.


The size of the furnace repair near me or the heater affects the efficiency of the appliances. The ideal size of the heater should be the one that fits your home perfectly. Heating should be evenly distributed to your home.

If you are still unsure about the cause of your rising energy bills, we are here to offer you a clear concept, inspect, and do the necessary things depending on the state of the heater.

While thinking outside the box and applying the above energy-saving suggestions will help lower your carbon footprint and electricity bills, high-efficiency HVAC equipment is still the most effective strategy to minimize your home’s energy use.

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