Everything You Need to Know About High-Efficiency Furnaces

High-efficiency furnaces are an excellent choice for homeowners who want to lower their energy expenses and minimize their environmental impact. They are engineered to consume less fuel yet still deliver the same amount of warmth to your home. In this guide, we will thoroughly discuss high-efficiency furnaces, covering how they operate, their advantages, and how to choose the one for your home.

How High-Efficiency Furnaces Work

High-efficiency furnaces work by using advanced technology to extract more heat from the fuel they burn. They do this using a secondary heat exchanger to capture the heat normally lost in traditional furnaces. This captured heat is then used for your home, resulting in a more efficient heating process that uses less fuel.

Benefits of High-Efficiency Furnaces

There are many benefits to investing in a high-efficiency furnace for your home. First and foremost, they are more energy-efficient, allowing you to save money on your energy bills over time. Because they use less fuel to produce the same level of heat, high-efficiency furnaces are also better for the environment, producing fewer greenhouse gas emissions.

Another benefit is that they are often quieter than traditional furnaces. This is because they use variable-speed blowers that operate more quietly than the fixed-speed blowers found in traditional furnaces. Additionally, high-efficiency ones often come with advanced features like programmable thermostats, air filtration systems, and humidity controls, which can improve indoor air quality and overall comfort in your home.

How to Choose the Right High-Efficiency Furnace for Your Home 

When choosing a high-efficiency furnace for your home, there are several factors to consider. First, identify what size is appropriate for your home. This will depend on various factors, including the square footage of your space, the number of windows and doors, and the level of insulation in your walls and attic.

Next, you will need to consider the energy efficiency rating of the furnace. Furnaces are rated according to their Annual Fuel Utilization Efficiency (AFUE) rating, which measures how efficiently they convert fuel into heat. The higher the AFUE rating, the more efficient the furnace. Look for furnaces with an AFUE rating of at least 90%, which is the minimum rating required for Energy Star certification.

You will also want to consider the features and options available with different high-efficiency furnaces. For example, some come with variable-speed blowers, which can adjust the blower motor’s speed to match your home’s heating needs. You can also consider features like air filtration systems, humidifiers, and programmable thermostats.

Maintenance and Care for High-Efficiency Furnaces

Like all furnaces, high-efficiency ones require regular maintenance and care to operate efficiently and reliably. This includes regular filter changes, annual inspections, and cleaning of the furnace and ductwork. You should also have your furnace serviced by a qualified HVAC technician if you notice any unusual noises, smells, or performance issues. Our techs know everything you need to know about high-efficiency furnaces.


Investing in a high-efficiency furnace is a smart choice for homeowners who want to save money on their energy bills while reducing their carbon footprint. These furnaces use advanced technology to extract more heat from the fuel they burn, resulting in a more efficient and eco-friendly heating process. With proper maintenance and care, your high-efficiency furnace can provide reliable and efficient heating for many years to come.

If you need furnace replacement and other services, Legacy Heating is here to help. Want to know everything you need to know about high-efficiency furnaces, just contact us. We specialize in HVAC systems for residential new home construction and offer installation and replacement services for furnaces. Get in touch with us today.

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