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When Should I Replace My Furnace?


When Should I Replace My Furnace?

As the crisp air begins to hint at the upcoming winter, many of us in Buck County, PA, and beyond are thinking of firing up our furnaces, hoping for that cozy warmth. But what if your trusty furnace isn’t so trusty anymore? Your furnace is a vital component of your home’s heating system. It works tirelessly to keep your living space warm during the cold winter months. However, like all appliances, furnaces have a limited lifespan, and there comes a time when you need to consider replacing them. In this article, we will discuss the signs that indicate it’s time for a furnace replacement and provide you with valuable insights on selecting the right replacement. Recognizing when it’s time for a furnace replacement can save you from a chilly surprise when the cold breezes and chilly nights are officially here. Let’s explore seven telltale signs to look out for – keep reading!

Understanding the Lifespan of a Furnace

Furnaces typically last around 15-20 years. However, this can vary based on several factors, including the quality of the furnace, maintenance, and usage. If your furnace is reaching the 15-year mark or beyond, it’s essential to start monitoring its performance closely.

Signs That Your Furnace Needs Replacement

Constant Repairs

If you find yourself calling the repair technician every other month to fix your furnace, it’s a clear sign that it’s on its last legs. Frequent breakdowns not only drain your wallet but also indicate that your furnace is struggling to function efficiently.

Rising Energy Bills

As your furnace ages, it becomes less energy-efficient. This inefficiency can lead to increased energy bills. If you notice a significant and consistent rise in your heating costs, it’s time to consider a replacement.

Uneven Heating

An aging furnace may struggle to distribute heat evenly throughout your home. If some rooms are consistently colder than others, it could be due to a failing furnace.

Strange Noises

Loud and unusual noises coming from your furnace, such as banging or squealing, are often signs of a mechanical problem. These issues can be costly to repair and might warrant a replacement.

Factors to Consider Before Replacing Your Furnace

Energy Efficiency

Newer furnaces are more energy-efficient, which can lead to substantial savings on your energy bills. Consider upgrading to a furnace with a high Annual Fuel Utilization Efficiency (AFUE) rating.

Fuel Type

You have several options when it comes to the type of fuel your furnace uses, including natural gas, oil, and electric. Choose the one that suits your budget and availability.

Heating Needs

The size of your furnace should match your heating needs. An oversized furnace can lead to energy wastage, while an undersized one won’t effectively heat your home.

How to Choose a New Furnace

Size Matters

Ensure your new furnace is appropriately sized for your home. A professional HVAC technician can perform a load calculation to determine the right size for your space.

Efficiency Ratings

Look for furnaces with high AFUE ratings. The higher the rating, the more efficient the furnace is at converting fuel to heat.

Fuel Options

Consider the availability and cost of fuel options in your area. Natural gas is often the most cost-effective choice, but it may not be available in all regions.

The Installation Process

Installing a new furnace is a complex job that should be handled by LegendAir pros. They will ensure that the new unit is properly installed, vented, and connected to your thermostat.

Maintenance Tips to Prolong Furnace Life

Regular maintenance is crucial to extending the life of your furnace. Change the air filters, clean the vents, and schedule annual professional inspections to catch issues early.


Knowing when to replace your furnace is essential for the comfort and safety of your home. Keep an eye out for the signs mentioned, and when it’s time to replace, consider the factors discussed in this article. A new, efficient furnace can save you money and provide reliable heating for years to come. Give Legendair a call for a quote for new furnace (215) 317-6099


1. How often should I change the air filters in my furnace?

It’s best to change the air filters every 1-3 months, depending on usage and the type of filter you use.

2. Can I install a new furnace myself?

Furnace installation is a complex job and should be done by LegendAir HVAC Pros for safety and efficiency.

3. What is the average cost of a new furnace installation?

The cost can vary greatly depending on factors such as the type of furnace, your location, and any additional work needed. On average, it can range from $2,800 to $7,000.

4. Are there any rebates or incentives for upgrading to an energy-efficient furnace?

Yes, many governments and energy companies offer incentives for upgrading to energy-efficient furnaces. Check with Energystar for available programs.

5. How can I improve the overall efficiency of my heating system, aside from replacing the furnace?

You can improve efficiency by enhancing insulation, sealing air leaks, and upgrading your thermostat to a programmable one.