Gas Furnace Vs Electric Furnace

Are you in the market for a new furnace? Then, you may wonder which type is best for your home - a gas or an electric furnace. While both have advantages, it's important to understand the differences between agas furnace and an electric furnace before making your decision.

Factors To Consider

  1. Usage
  2. Efficiency
  3. Cost
  4. Installation
  5. Lifespan
  6. Safety
  7. Environmental Impact.


A gas furnace utilizes a combustion process, a heat exchanger, and a blower to distribute heat throughout your home.

Gas furnaces are known to be more efficient than electric furnaces, with an average efficiency rating of 98%. This means that only 2% of the fuel used is wasted, making it a cost-effective option in the long run.

In contrast, an electric furnace uses electric heating elements to generate heat. When the furnace is turned on, the electricity heats these elements. A built-in fan then circulates the warm air throughout your home. These furnaces are ideal for areas with milder winter climates, as they are most efficient at temperatures above 30-40 degrees Fahrenheit.

An electric furnace uses electricity, heating coils, and a circulation fan to generate and distribute warmth.

Electric furnaces have an average efficiency rating of 95%, meaning they waste about 5% of energy.

Electric furnaces are popular for homes in regions with milder winters. They draw in cold air from your home, heat it with electric coils, and propel the warmed air back into the living space through your home's ductwork. 

This process is repeated until your property reaches a suitable temperature set on your thermostat. This can make them a more flexible option for homes without existing infrastructure for a gas furnace. However, because electric furnaces rely on electricity to generate heat, they can lead to higher utility bills, especially in areas where electricity costs are high.


 As mentioned earlier, gas and electric furnaces have efficiency ratings. However, it's important also to consider the efficiency of your home as a whole. Insulation, windows and doors, and ductwork affect how efficiently your furnace will operate.

Gas furnaces are generally more efficient than electric ones due to their lower operating price and higher efficiency ratings. However, this also depends on your area's climate and energy prices.


Electrical furnaces are less expensive to purchase, while gas furnaces are typically less furnace to operate. 

Moreover, there are a few factors to consider when it comes to cost.

Initial Cost

Gas furnaces tend to have a higher initial price compared to electric furnaces. This is due to the additional components needed, such as a gas line, ventilation system, and combustion process. However, as mentioned earlier, they can be more cost-effective in the long run due to their high efficiency.

On the other hand, electric furnaces have a lower initial cost but may lead to higher utility bills over time.

Installation Cost

Installing a gas furnace involves more labor and materials than an electric furnace. This can make the initial installation cost higher for a gas furnace.

Electric furnaces, on the other hand, are easier to install and don't require additional components or infrastructure, lowering installation costs. 

Operating Cost

Gas furnaces have a lower operating cost due to the cheaper natural gas price than electricity. This can result in significant savings over time, especially in areas with colder climates where the furnace will be used frequently.

Electric furnaces rely on electricity to generate heat, which can lead to higher utility bills. However, they may still be a more cost-effective option in areas with milder winters where the furnace will not be used as frequently.

4. Installation

Installing a gas furnace involves more labor and materials than an electric furnace. A gas line, ventilation system, and combustion process must be properly installed.

On the other hand, electric furnaces are simpler to install and typically don't require additional components or infrastructure.

Besides, the installation process for an electric furnace can be less invasive compared to a gas furnace. This means less disruption to your home during the installation process.


Gas furnaces typically have a longer lifespan compared to electric furnaces. Proper maintenance and care can last up to 20 to 30 years. On the other hand, electric furnaces have a lifespan of around 15-20 years.


When it comes to safety, both gas & electric furnaces have their risks. Gas furnaces utilize natural gas, which can be dangerous if a gas leak occurs. However, this risk can be minimized with regular maintenance and proper ventilation.

Electric furnaces do not have the risk of gas leaks, but they can pose a fire hazard if improperly maintained and faulty electrical components are faulty.

7.Environmental Impact

Gas furnaces produce carbon dioxide and other pollutants during combustion, which can contribute to air pollution. However, technological advances have made modern gas furnaces more efficient and emit fewer pollutants.

Electric furnaces do not emit any pollutants during operation, making them a more environmentally friendly option. However, electricity generation can contribute to air pollution depending on the energy source used by your local power plant.

Always Contact an Expert for Furnace Installation or Repairs

Whether you choose a gas or electric furnace, it's important to always consult with a professional like MileHi HVAC for furnace installation and repairs. Furnaces can be complex, and attempting to install or repair them without proper knowledge and training can be dangerous.

In addition, regular maintenance is crucial in ensuring the safety and efficiency of your furnace. A professional technician can perform tune-ups and inspections to catch any potential issues before they become major problems.

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