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Do Furnaces Get Less Efficient as They Age?

As temperatures drop and the heating season kicks into gear, it’s common to wonder if your furnace is still running as efficiently as it once did. A furnace is a significant investment, so understanding its performance over time is important. Let’s take a closer look at how a furnace’s efficiency can change as it ages, what signs to watch for, and why it matters for your comfort and budget.

Understanding Furnace Efficiency and Age

Furnaces are built to last, with many systems having an average lifespan of 15 to 20 years. However, just like any appliance, they lose efficiency over time. This decline often starts around the 10-year mark, depending on usage, maintenance, and environmental factors. As your furnace ages, it may need to work harder to produce the same amount of heat, which can lead to increased energy bills.

The efficiency of a furnace is typically measured by its Annual Fuel Utilization Efficiency (AFUE) rating. Newer furnaces often come with AFUE ratings of 90% or higher, meaning they convert most of the fuel they consume into heat. Over time, however, wear and tear on parts can reduce this percentage, resulting in less efficient performance.

Signs Your Furnace’s Efficiency Is Declining

There are a few telltale signs that your furnace may be losing efficiency:

• Higher Heating Bills: One of the most noticeable indicators is a steady increase in heating bills without any significant change in usage. If your furnace has to run longer to maintain your desired temperature, it’s consuming more energy and driving up costs.

• Uneven Heating: An aging furnace may struggle to distribute heat evenly throughout your home. If you notice colder spots or rooms that don’t warm up as they used to, this can be a sign of reduced efficiency.

• Frequent Repairs: As furnaces age, they’re more likely to experience issues. If you find yourself frequently calling for repairs, it may be more cost-effective to consider a replacement, especially if your system is past its prime.

• Loud Noises: Odd noises like banging, rattling, or squealing can indicate that parts are wearing out, which can reduce efficiency and signal that your furnace may be approaching the end of its effective lifespan.

Benefits of Upgrading an Aging Furnace

While a furnace that’s still running may seem adequate, upgrading to a newer model can bring significant benefits. Modern furnaces are designed for higher efficiency and lower emissions, which can result in energy savings and improved comfort. Newer systems also offer features like variable speed blowers and smart thermostats, providing more precise temperature control and greater energy efficiency.

Let Us Help You Stay Warm Efficiently

At Metro Heating & Cooling in Des Moines, IA, we understand how essential a reliable, efficient heating system is during the colder months. If your furnace is showing signs of aging or you’re curious about whether an upgrade might be the right choice, we’re here to help. Our experienced team provides comprehensive heating services, from inspections and repairs to energy-efficient upgrades. Give us a call today to discuss your heating maintenance needs, and let us help keep your home comfortable and energy-efficient all season long!