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As heating needs in Durham Region homes continue to evolve, homeowners are constantly seeking more energy-efficient solutions. An energy-efficient furnace not only helps reduce environmental impact but also saves you money on utility bills. Upgrading to an energy-efficient furnace can make a significant difference in your home’s heating costs and overall comfort. As a locally owned and operated HVAC company in the Durham Region, Fortis Heating & Air Conditioning is dedicated to helping families make informed decisions when it comes to improving their heating systems. In this informative blog post, we will provide you with essential tips and considerations for choosing an energy-efficient furnace for your home.

Investing in an energy-efficient furnace is a decision that offers both short-term and long-term benefits. The advanced technology in these furnaces allows them to use fuel more effectively and convert a higher percentage of the fuel into heat for your home. This results in reduced energy consumption and lower heating costs over time. Additionally, an energy-efficient furnace typically operates more quietly and, by producing more consistent heat, enhances the overall comfort of your home.

Selecting the right energy-efficient furnace can be a daunting task, especially with the variety of options available in the market. Fortis Heating & Air Conditioning is here to make this process easier by providing a breakdown of essential factors to consider while making a smart decision for your home. From understanding furnace efficiency ratings to discussing critical features and sizing options, this blog post will equip Durham Region homeowners with the knowledge required to choose the ideal energy-efficient furnace for their specific needs.

1. Understanding Furnace Efficiency Ratings (AFUE)

When selecting an energy-efficient furnace, the first factor to consider is its Annual Fuel Utilization Efficiency (AFUE) rating. This rating measures the percentage of fuel consumed that is converted into usable heat for your home:

An AFUE rating of 80% implies that 80% of the fuel consumed is turned into heat, while the remaining 20% is lost during the combustion process.

Modern high-efficiency furnaces typically have AFUE ratings between 90% and 98%, significantly reducing energy waste compared to older systems.

When choosing a furnace, look for models with a higher AFUE rating to maximize energy efficiency and cost savings. It’s also important to note that upgrading from an older, less efficient furnace to a high-efficiency model can lead to substantial savings on your heating bills.

2. Furnace Type: Single-stage, Two-stage, or Modulating

Different types of furnaces offer varying levels of efficiency and comfort:

Single-stage furnaces operate at full capacity whenever they are running, potentially resulting in uneven heat distribution and higher energy consumption. These units have a lower initial cost, but may not offer optimum energy efficiency.

Two-stage furnaces have a high and low operating mode, allowing them to adapt to your home’s heating requirements. This results in more consistent heating, reduced temperature fluctuations, and enhanced energy efficiency.

Modulating furnaces continuously adjust their heat output to match the exact heating needs of your home, providing the most precise temperature control and highest energy efficiency among the three types.

Consider these furnace types and weigh the benefits of each when selecting an energy-efficient furnace for your home.

3. Proper Furnace Sizing

Selecting the correct furnace size for your home is crucial for maximizing energy efficiency:

An undersized furnace will work harder to heat your home, leading to increased energy consumption and reduced equipment life.

An oversized furnace can cause short-cycling, whereby the furnace turns on and off frequently, resulting in uneven heating, increased wear and tear, and wasted energy.

To determine the appropriate furnace size, a professional HVAC contractor should conduct a load calculation based on factors such as your home’s square footage, insulation levels, and climate. By choosing the right furnace size, you’ll enjoy consistent heating, reduced energy waste, and improved comfort.

4. Additional Energy-Efficient Features

Modern furnaces offer various energy-saving features that can further enhance efficiency and comfort:

Variable-speed motor: This feature allows the furnace blower to operate at different speeds, adapting to your home’s specific heating needs and improving comfort. It can also lead to reduced energy consumption and quieter operation.

Sealed combustion: Furnaces with sealed combustion draw in fresh air from outside and release combustion by-products back outdoors, improving both energy efficiency and safety.

Energy Star certification: Select a furnace with an Energy Star certification, which indicates that the product meets or exceeds strict efficiency guidelines set by Natural Resources Canada.

When comparing furnace models, consider these energy-efficient features as they can contribute to improved performance and cost savings in the long run.


Choosing an energy-efficient furnace for your Durham Region home involves understanding furnace efficiency ratings, selecting the appropriate furnace type, ensuring proper sizing, and considering additional energy-saving features. By making an informed decision, you can enjoy lower heating costs, reduced environmental impact, and enhanced home comfort.

Fortis Heating & Air Conditioning, as a locally-owned and operated HVAC company, is dedicated to providing Durham Region families with educational, informative, and helpful content on heating systems and energy efficiency. With our professional advice and installation services, we can help you make informed decisions and create a more comfortable and energy-efficient home. If you’re considering upgrading your furnace or need assistance with selecting the ideal energy-efficient furnace, don’t hesitate to contact us today. Our team of experts is ready to help you every step of the way with your gas fireplace installation in Oshawa.

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