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What Makes a High Efficiency Gas Furnace so Efficient?

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small__6285391512It might be common knowledge that high efficiency furnaces can significantly lower your heating bills, but do you know what makes them capable of saving so much energy? Today we're going to answer that question by talking about some of the most common components of a high efficiency gas furnace!


What makes a high efficiency gas furnace so efficient?


The furnaces that are available today are many times more efficient than the systems that were installed just a decade or two ago. This is partially due to the fact that furnaces are simply built better nowadays, but also because of the new technology and features that have emerged in the heating industry in recent years (as you'll see below).


These advancements have allowed high efficiency furnaces to do two things: extract more heat out of the gas they consume and only use the amount of energy that's necessary to get the job done at any given time.


What does a high efficiency furnace mean?

A high efficiency furnace is designed in a way that increases the overall efficiency of your furnace in order for it to use less gas to heat your home and cost you less on energy each month. Most high efficiency furnaces either have two stage heating, two heat exchangers or sealed combustion to heat your air in a more efficient manner. If you are thinking about getting a high efficiency furnace installed in your home, give us a call today to learn more

What are the benefits of a high efficiency furnace?

Some of the benefits of a high efficiency furnace include: 

  • It costs you less on energy each month.
  • It increases the value of your home.
  • It heats your home more effectively.

High efficiency furnaces are more environmentally friendly and heat your home more efficiently. Additionally, if you are planning on selling your home it is a great investment to increase the overall value of your home. To get a high efficiency furnace for your home, contact us today.

How much should a high efficiency furnace cost?

A high efficiency furnace should cost around $5,000-$13,000. The price can vary due to: 

  • The type of high efficiency furnace you want installed. 
  • The cost to remove your old furnace and install the new furnace.
  • The contractor’s hourly rate. 

High efficiency furnaces save you more on monthly energy costs and add value to your home. Additionally, high efficiency furnaces can last longer than most standard furnaces. To learn more about getting a high efficiency furnace for your home, call us today

Common components of a high efficiency gas furnace



    • Two-stage heating. Temperatures here in the St. Louis area can change significantly from day to day and week to week. That's why many high efficiency gas furnaces come with two-stage heating. The lower stage consumes less energy and is used a majority of the time, while the higher stage only kicks on when it's very cold out and more heat is required.


    • Variable speed blower. Similar to two-stage heating, a variable speed blower operates at different capacities depending on how much it's needed at any given time. When more airflow is needed (like when your air filter begins to clog), a faster speed is used. When the blower detects that less airflow is needed, it switches to a lower speed to conserve energy.



    • Sealed combustion. In order for the combustion process to work properly, your furnace needs to draw in a certain amount of air. Unlike furnaces with unsealed combustion, which utilize (heated) air from around your home, sealed combustion furnaces draw in air from outside in order to conserve energy and improve safety levels.


If you have any questions about a high efficiency gas furnace, or if you'd like a heating system serviced or installed in your home, contact Jerry Kelly, your St. Charles heating and cooling contractor. We service the St. Louis area, including towns like Lake St. Louis, Manchester and Maryland Heights.


photo credit: pembina.institute via photopin cc

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Judy L.
22:38 29 Jun 22
Heath was excellent and friendly. He answered all of our questions to our satisfaction.
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20:21 28 Jun 22
Jerry Kelly always has the best customer service. Technicians are professional and polite. I love that they text with a picture of the tech before arrival.
17:07 28 Jun 22
Zach H came out because we had asked for a smart thermostat 2 years ago and we’re not given one. i mentioned to him that upstairs is always EXTREMELY HOT and he went up felt it and went above and beyond and racked his brain to fix it. he found the issue and was on top of it immediately for a problem he wasn’t even sent out for. you don’t find many people who do extra service. very thankful. it already feels 10x better!

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