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Furnace Replacement for Older Homes: What to Consider


Considering the replacement of old furnaces with new gas furnaces is crucial for improving energy efficiency and overall comfort in older homes. It is recommended to consult with an HVAC installer to upgrade the HVAC system. Upgrading to a new gas furnace can significantly enhance heat distribution in your home, reduce energy consumption, and provide a more consistent temperature throughout your home. An HVAC installer can help you with the installation process, including assessing and potentially replacing old ductwork in your HVAC system.

In this blog post, we will cover essential topics related to HVAC installation. We will discuss the installation process, warranty coverage, service terms, and the expected lifespan of a new furnace. Additionally, we will provide information on how to obtain accurate HVAC estimates and the importance of conducting an energy audit. Lastly, we will address the potential challenges that may arise when dealing with old ductwork. In this blog post, we will provide insights on choosing a reputable company with experience in replacing new furnaces in your area. It is important to consider home warranty companies when selecting a furnace replacement service. Additionally, conducting an energy audit can help determine the most efficient furnace for your home. Lastly, ensuring proper insulation is in place is crucial for optimizing the performance of your new furnace. We’ll also highlight key signs that indicate it’s time for a replacement, including inefficiency in your gas or electric furnace, frequent repairs for your new furnaces, and uneven heating in specific areas of your home with an efficient furnace.

By understanding these factors and seeking professional guidance when needed, you can make an informed decision about replacing your old furnace with a more efficient and reliable system. Additionally, conducting an energy audit can help identify areas where insulation may be lacking or air leaks are present, allowing for targeted improvements. It’s also important to assess the condition of windows, as they can greatly impact energy efficiency.

How to Know If It’s Time for a Furnace Replacement

Signs Indicating the Need for Furnace Replacement

Is your furnace acting up more often than not? Are you noticing a sudden spike in your energy bills due to issues with your gas furnace or electric furnace? It may be time to consider furnace repair to address any air leaks. These could be signs that it’s time to consider replacing your furnace, especially if you live in an older home with air leaks and energy inefficiencies. Conducting an energy audit can help identify these issues and determine if replacing your windows is necessary. Frequent breakdowns and increased energy costs are common indicators that your furnace may no longer be efficiently heating your home. This can be especially problematic during the colder months when you rely on your furnace to keep your windows sealed and the air warm and comfortable.

When your furnace and windows start breaking down frequently, it can become a major inconvenience for the air quality in your home. Not only does furnace replacement costs leave you without heat during cold winter months, but it also leads to costly repairs. Instead of constantly shelling out money for repairs, it might be more cost-effective in the long run to invest in a new furnace.

If you’ve noticed a significant increase in your energy bills without any changes in usage patterns or rates, this could be attributed to an inefficient air furnace. Older furnaces tend to have lower energy efficiency ratings compared to newer models, particularly when it comes to heating the air. As furnaces age, their performance deteriorates, leading to increased air consumption and subsequently higher utility bills. Additionally, furnace replacement costs may also become a concern.

Age as a Factor in Determining If It’s Time to Replace the Furnace

The age of your air furnace is another crucial factor to consider when deciding whether or not it’s time for an air replacement. Most furnaces have an average lifespan of around 15-20 years. If yours is approaching or has exceeded this timeframe, it may be wise to start exploring replacement options.

Older furnaces are more prone to breakdowns and inefficiencies due to wear and tear over the years. They may struggle to maintain consistent temperatures throughout your home or emit strange noises during operation. Moreover, outdated furnaces lack modern features that contribute to improved comfort and energy efficiency.

While regular maintenance can extend the lifespan of a furnace, there comes a point where repair costs outweigh the benefits. Investing in a new furnace not only ensures reliable heating but also provides peace of mind, knowing that you won’t have to deal with unexpected breakdowns during the coldest months of the year.

Importance of Professional Inspection and Evaluation

It’s crucial to consult with a professional HVAC technician. They possess the expertise and experience necessary to evaluate the condition of your furnace accurately.

Average Cost To Replace a Furnace

Factors Influencing the Cost of Furnace Replacement

Several factors can influence the cost of replacing a furnace in older homes. These factors include the size, type, and efficiency rating of the new furnace.

  • Size: The size of the furnace is an important consideration as it needs to be appropriate for your home’s square footage. A larger home will require a larger and more powerful furnace, which may increase the overall cost.

  • Type: There are different types of furnaces available, such as gas, electric, or oil furnaces. Each type has its own installation requirements and associated costs.

  • Efficiency Rating: The higher the efficiency rating of a furnace, the more energy-efficient it is. While high-efficiency furnaces may have a higher upfront cost, they can lead to long-term savings on energy bills.

National Average Cost Range for Replacing a Furnace

The national average cost range for replacing a furnace in older homes can vary depending on various factors. However, it is helpful to have an estimate to understand what you might expect to pay.

  • According to recent data from HomeAdvisor, the average cost range for replacing a furnace is between $2,500 and $7,500.

  • This price range includes both equipment and installation costs.

  • Keep in mind that this is just an average estimation and actual costs may vary based on your specific requirements.

Additional Costs to Consider

In addition to the basic cost of purchasing and installing a new furnace, there are some additional expenses that homeowners should consider when budgeting for a furnace replacement in older homes.

  • Installation: The installation process itself may require additional costs depending on your specific situation. For instance, if significant modifications or upgrades are needed to accommodate the new furnace or if any ductwork repairs are necessary.

  • Permits: Some areas require permits for HVAC installations. These permits may come with associated fees that should be factored into the overall cost.

  • Operating Costs: While not a direct upfront expense, it is important to consider the long-term operating costs of your new furnace. High-efficiency furnaces may have lower monthly energy bills, which can lead to savings over time.

Repair vs Replacement of a 30-Year-Old Furnace

Pros and Cons of Repairing vs Replacing an Older Furnace

Repairing or replacing a 30-year-old furnace can be a tough decision to make. Let’s weigh the pros and cons of each option.

Pros of Repairing:

  • Cost-effective in the short term: Repairing your old furnace might be cheaper upfront compared to purchasing a new one.

  • Familiarity with current system: You are already familiar with how your existing furnace operates, which can make repairs easier to manage.

Cons of Repairing:

  • Frequent breakdowns: Older furnaces tend to experience more frequent breakdowns, leading to inconvenience and potential discomfort during cold weather.

  • Escalating repair costs: As your furnace ages, the cost of repairs may increase over time. It could even reach a point where repair expenses exceed the cost of replacement.

Pros of Replacement:

  • Improved energy efficiency: Newer furnaces are designed with advanced technology that enhances energy efficiency, helping you save on utility bills in the long run.

  • Enhanced comfort and reliability: A new furnace provides better heating performance, ensuring consistent warmth throughout your home without worrying about sudden breakdowns.

Cons of Replacement:

  • Higher upfront cost: Purchasing and installing a new furnace can be expensive initially. However, it is important to consider long-term savings and improved performance.

  • Disruption during installation: Replacing a furnace requires professional installation, which may cause temporary inconvenience while the work is being done.

Considerations Based on Repair Costs Compared to Replacement Costs

When deciding between repairing or replacing your 30-year-old furnace, it’s essential to consider the costs involved.

If repair costs are relatively low and infrequent, repairing might be a viable option. However, if repair expenses are becoming increasingly frequent or if they approach or exceed half the cost of replacement, it may be more cost-effective to replace the furnace altogether.

Energy Efficiency and Long-Term Savings as Factors Favoring Replacement

Energy efficiency is a critical factor to consider when weighing repair versus replacement options for an older furnace. Older furnaces tend to have lower efficiency ratings, which means they consume more energy to produce the same amount of heat.

What’s The Cost To Repair an Older Furnace If You Have A Warranty

If you have an older furnace and it’s giving you trouble, you might be wondering if your warranty will cover the repair costs. Let’s dive into what you need to consider.

Explaining warranty coverage for repairs on older furnaces

Having a warranty for your older furnace can provide some peace of mind knowing that certain repairs may be covered. However, it’s important to understand the specifics of your warranty before assuming all repair costs will be taken care of. Warranties typically vary in terms of coverage and duration, so make sure to review the details provided by the manufacturer or service provider.

Possible out-of-pocket expenses despite having a warranty

Even with a warranty in place, there may still be out-of-pocket expenses associated with repairing an older furnace. Some warranties have limitations or exclusions that could leave you responsible for certain parts or labor costs. It’s essential to read the fine print and fully comprehend what is covered and what isn’t under your specific warranty agreement.

Here are some potential out-of-pocket expenses you might encounter despite having a warranty:

  • Deductibles: Some warranties require you to pay a deductible before they cover any repair costs.

  • Non-covered items: Certain components or parts may not be included in the warranty coverage, leaving you responsible for their replacement.

  • Labor charges: While the cost of parts might be covered, labor charges could still apply and need to be paid separately.

  • Upgrades or modifications: If your furnace requires upgrades or modifications during the repair process, these additional expenses may not be covered by the warranty.

Weighing repair costs against potential benefits or limitations of warranty coverage

When deciding whether to repair your older furnace with a warranty in place, it’s crucial to weigh the potential benefits against any limitations. Consider these factors:

Pros of repairing with a warranty:

  • Cost savings: If the repair costs are covered by the warranty, you can save a significant amount of money compared to paying for repairs out-of-pocket.

  • Peace of mind: Having a warranty can provide peace of mind knowing that you won’t have to bear the entire financial burden if something goes wrong with your furnace.

DIY vs Hiring A Professional To Replace a 30-Year-Old Furnace

You may find yourself wondering whether to tackle the job yourself or hire a professional HVAC installer. Let’s take a closer look at the differences between these two options and consider the potential risks and benefits associated with each.

Differences between DIY installation and hiring professionals for furnace replacement

  1. Expertise: Hiring an HVAC professional brings specialized knowledge and experience to the table. They understand the intricacies of furnace installation, ensuring that everything is done correctly and efficiently. On the other hand, opting for a DIY approach means relying on your own skills and understanding of the process.

  2. Time and Effort: Replacing a furnace can be a complex task that requires significant time, effort, and attention to detail. While professionals have the necessary tools and expertise to complete the job efficiently, taking on this project yourself may involve extensive research, troubleshooting, and trial-and-error.

  3. Cost Considerations: DIY installation may seem like an attractive option from a cost perspective since you won’t have to pay for professional services. However, it’s crucial to weigh this against potential expenses that could arise from mistakes made during installation or improper equipment sizing.

Potential risks associated with DIY installation

  1. Safety Concerns: Furnace replacement involves working with electrical connections, gas lines, and potentially hazardous materials. Without proper training or experience, there is an increased risk of accidents or damage to your property.

  2. Voiding Warranties: Many furnaces come with warranties that require professional installation for them to remain valid. By attempting a DIY installation, you run the risk of voiding these warranties, leaving you responsible for any future repairs or replacements out of pocket.

  3. Inadequate Performance: Incorrectly installed furnaces may not operate optimally or efficiently, leading to higher energy bills and potential system malfunctions. Moreover, improper installation can result in decreased indoor air quality or uneven heating throughout your home.

Benefits of professional expertise, warranties, and safety considerations

  1. Professional Guidance: Hiring an HVAC professional ensures that the furnace replacement process is handled by a trained expert who understands the nuances of your specific system.

The Advantages of a New Furnace for Your Older Home

Better Energy Efficiency Leading to Reduced Utility Bills

One of the major advantages of installing a new furnace in your older home is the improved energy efficiency it offers. Older furnaces tend to be less efficient, meaning they consume more energy to produce the same amount of heat. This inefficiency can lead to skyrocketing utility bills, leaving you with a dent in your pocket.

By upgrading to a new, high-efficiency furnace, you can significantly reduce your energy consumption and lower your monthly heating costs. These newer models are designed with advanced technology and better insulation, allowing them to convert more fuel or electricity into heat without wastage. As a result, you’ll enjoy a warmer home while paying less on your utility bills.

Increased Home Comfort Through Improved Heating Capabilities

Another advantage of replacing your old furnace is the enhanced comfort it brings to your home. Older furnaces may struggle to distribute heat evenly throughout the house, resulting in cold spots or inconsistent temperatures from room to room. This can make it difficult for you and your family members to stay comfortable during chilly winter months.

With a new furnace installation, you can say goodbye to those chilly corners and hello to consistent warmth throughout every room in your home. Modern furnaces come equipped with advanced features such as variable-speed blowers and zoned heating capabilities that ensure even distribution of heat across all areas of your house. This means no more shivering in one room while sweating in another—just cozy comfort wherever you go.

Potential Eligibility for Rebates or Incentives with High-Efficiency Furnaces

Investing in a new furnace for your older home not only benefits you financially through reduced energy costs but also potentially makes you eligible for rebates or incentives offered by government programs or utility companies. Many regions provide incentives for homeowners who upgrade their appliances to more energy-efficient options.

Before making any purchase, it’s a good idea to check with your local utility company or conduct an energy audit to determine if there are any available rebates or incentives for installing a high-efficiency furnace. These programs can help offset the upfront cost of purchasing and installing a new furnace, making it even more affordable for you in the long run.

The Challenges for a New Furnace in Your Older Home

Modifications Required for Modern Furnaces

Replacing an old furnace in an older home can pose several challenges. One of the main obstacles is that modern furnaces may require modifications to be compatible with the infrastructure of older homes. These modifications could include updates to the electrical system, ventilation, and fuel supply. It’s essential to consult with a professional HVAC technician who specializes in working with older homes to determine what modifications are necessary.

Compatibility and Sizing of Ductwork

Another consideration when replacing a furnace in an older home is the compatibility and sizing of the existing ductwork. Older homes often have smaller or differently shaped ducts that may not be suitable for modern furnace systems. In some cases, the ductwork may need to be resized or reconfigured to accommodate the new furnace properly. This can add additional costs and time to the installation process.

Impact on Aesthetics of Historic Homes

One aspect that homeowners should take into account is how a new furnace will impact the overall aesthetics of their historic home. Older homes often have unique architectural features and design elements that contribute to their charm and character. Installing a modern furnace may require alterations or additions that could affect these original features.

To maintain the integrity and visual appeal of your historic home, it is crucial to work closely with an experienced HVAC contractor who understands how to blend modern heating technology seamlessly into older properties without compromising their aesthetics.

Addressing Old Ductwork Challenges

Older ductwork can present its own set of challenges when replacing a furnace in an older home. Over time, ducts may become worn out, leaky, or inefficient due to age or improper maintenance. Before installing a new furnace, it’s important to assess the condition of your existing ductwork thoroughly.

If your old ductwork is damaged or inadequate for efficient airflow distribution, you might need to consider upgrading or replacing it altogether. Upgrading to newer, more energy-efficient ductwork can improve the overall performance of your heating system and ensure that warm air is evenly distributed throughout your home.

Types of Furnaces (Natural Gas, Oil, Electric, Coal, Propane, Mini-Split System, Geothermal and Solar)

There are various types of furnaces to consider. Each type has its own advantages and disadvantages, so it’s important to understand the differences in fuel sources and their pros/cons. Here is an overview of the different furnace types available:

Natural Gas

  • Uses natural gas as a fuel source.

  • Pros: Affordable, widely available, efficient heating.

  • Cons: Requires a natural gas connection.


  • Uses oil as a fuel source.

  • Pros: Provides consistent heat output, suitable for areas without access to natural gas.

  • Cons: Requires regular oil deliveries, can be more expensive than other options.


  • Runs on electricity as a power source.

  • Pros: Easy installation, no need for fuel storage or delivery.

  • Cons: Higher energy bills compared to other options.


  • Utilizes propane gas as a fuel source.

  • Pros: Can be used in areas without access to natural gas lines, efficient heating.

  • Cons: Requires propane tank installation and regular refills.


  • Burns coal for heat generation.

  • Pros: Long-lasting heat output, cost-effective in some regions with abundant coal supply.

  • Cons: Environmental concerns and emissions associated with burning coal.

Mini-Split System

  • A ductless heating system that consists of an outdoor unit and one or more indoor units.

  • Pros: Energy-efficient, allows for zoned heating and cooling.

  • Example 1: You can save energy by only heating the rooms you use frequently while keeping others at a lower temperature.

  • Example 2: Ideal for retrofitting older homes without existing ductwork.

Geothermal and Solar Heating

  • Utilizes renewable energy sources such as geothermal or solar power for heating purposes.

  • Example 1 (Geothermal): Harnesses the stable temperature underground to heat the home.

  • Example 2 (Solar): Uses solar panels to convert sunlight into energy for heating.

  • Pros: Environmentally friendly, long-term cost savings on energy bills.

  • Cons: Requires upfront investment and may not be feasible in all locations.

How Long Does a Furnace Last?

Average Lifespan of Different Types of Furnaces

The lifespan of a furnace can vary depending on the type. On average, gas furnaces tend to last between 15 to 20 years. Oil furnaces have a similar lifespan, while electric furnaces typically last around 20 to 30 years. It’s important to note that these are just general estimates and individual factors can influence the longevity of a furnace.

Factors Influencing the Longevity of a Furnace

Several factors can impact how long a furnace lasts. One crucial factor is regular maintenance. Furnaces that receive routine maintenance, such as annual inspections and cleanings, tend to have longer lifespans compared to those that are neglected. Proper maintenance helps prevent issues from escalating and ensures optimal performance.

Another factor is the quality of installation. A well-installed furnace by experienced professionals increases its chances of lasting longer. Improper installation can lead to premature wear and tear or even system failure.

The frequency of use also plays a role in determining how long a furnace will last. If a furnace is used consistently throughout the year, it may experience more wear and tear compared to one used only during colder months.

Lastly, environmental conditions can impact the lifespan of a furnace. Extreme weather conditions, such as harsh winters or high humidity levels, can put additional strain on the system and potentially shorten its lifespan.

Signs Indicating When a Furnace May be Reaching the End of Its Lifespan

While there is no definitive expiration date for furnaces, there are some signs that indicate when they may be nearing their end:

  1. Age: As mentioned earlier, most furnaces start showing signs of aging after 15-20 years.

  2. Frequent Repairs: If your furnace requires frequent repairs or if repair costs become increasingly expensive, it may be more cost-effective in the long run to replace the unit.

  3. Inconsistent Heating: If you notice uneven heating throughout your home or rooms that never seem to reach the desired temperature, it could be a sign of a furnace nearing the end of its lifespan.

  4. Increased Energy Bills: As furnaces age, they become less efficient, resulting in higher energy bills.

Will a Home Warranty Cover Furnace Replacement?

Explanation of what home warranties typically cover regarding furnace replacement

Home warranties can be a lifesaver. But what about furnace replacement? Well, the coverage provided by home warranty companies for furnace replacement can vary. In general, most standard home warranty plans do cover furnaces. This means that if your furnace breaks down due to normal wear and tear, your home warranty may help cover the cost of repair or even replacement.

However, it’s important to note that not all components of a furnace may be covered under a standard home warranty plan. While the main unit itself is typically covered, certain parts like filters, thermostats, and ductwork may have limitations or exclusions. It’s crucial to review the terms and conditions of your specific home warranty policy to understand exactly what is covered.

Limitations or exclusions to consider in home warranty coverage

When considering a home warranty for furnace replacement, it’s essential to be aware of any limitations or exclusions in the coverage. Some common limitations you might come across include:

  1. Age restrictions: Home warranties often have age restrictions on appliances and systems they cover. If your furnace is older than a certain threshold (typically around 10-15 years), it may not qualify for coverage.

  2. Pre-existing conditions: If your furnace was already experiencing issues before purchasing a home warranty, those pre-existing conditions may not be covered.

  3. Maintenance requirements: Many home warranties require regular maintenance and upkeep of appliances and systems for them to remain eligible for coverage. Failure to meet these requirements could result in denial of claims.

  4. Maximum payout limits: Home warranties usually have maximum payout limits per claim or per year. Make sure you understand these limits as they could affect how much reimbursement you receive for furnace replacement.

  5. Service fees: Most home warranties require you to pay a service fee or deductible for each repair or replacement. These fees can vary, so it’s important to factor them into your decision-making process.

Potential need for additional coverage or specific policies related to furnaces

While a standard home warranty may provide some coverage for furnace replacement, it’s worth considering additional coverage options that are specifically tailored to furnaces.

What to Consider When Buying a New Furnace for Your Historic Home

There are several factors you need to consider. From the size and efficiency rating of the furnace to preservation considerations during installation, each decision plays a crucial role in ensuring that your heating system is both effective and compatible with the unique needs of an older property.

Factors to Consider When Selecting a New Furnace for an Older Home

One of the first things you should consider when buying a new furnace for your historic home is the size of the unit. Older homes often have smaller spaces and may require furnaces with lower heating capacities. A professional HVAC technician can assess your home’s specific needs and recommend an appropriately sized furnace that will provide efficient heating without overwhelming your space.

Efficiency rating is another important factor to keep in mind. Look for furnaces with high Annual Fuel Utilization Efficiency (AFUE) ratings, as they indicate how effectively the unit converts fuel into heat. Higher AFUE ratings mean greater energy efficiency, which can help reduce utility bills and minimize environmental impact.

Importance of Professional Guidance in Choosing the Right Furnace

Seeking professional guidance is essential. HVAC technicians who specialize in working with older properties understand the unique challenges these homes present and can offer expert advice on suitable options. They will take into account factors such as insulation, ductwork condition, and any existing architectural features that may affect installation.

Professional guidance ensures compliance with local building codes and preservation guidelines. Historic homes often have strict regulations regarding modifications or alterations that must be followed to maintain their historical integrity. By consulting with professionals experienced in working with older homes, you can ensure that your furnace replacement meets all necessary requirements while preserving the character of your property.

Preservation Considerations for Historic Homes During Installation

Preserving the historical features of your home during furnace installation is crucial. Many older homes have unique architectural elements that add to their charm and value. When replacing a furnace, it’s important to consider how the installation process may impact these features.

To protect your home’s historical integrity, discuss preservation strategies with your HVAC technician.


In conclusion, replacing a furnace in an older home requires careful consideration of various factors. Understanding the signs that indicate it’s time for a replacement, such as frequent breakdowns and rising energy bills, is crucial. Weighing the average cost of furnace replacement against repair expenses for a 30-year-old unit can help homeowners make an informed decision.

While DIY options may seem tempting to save on costs, hiring a professional for furnace replacement is often recommended due to the complexity of the installation process and potential safety hazards. It’s also important to explore the advantages of a new furnace for an older home, including improved energy efficiency and enhanced comfort. However, one must be aware of the challenges associated with installing a new furnace in an older home, such as compatibility issues with existing ductwork or space constraints.

Considering different types of furnaces like natural gas, oil, electric, coal, propane, mini-split systems, geothermal or solar can help homeowners choose the most suitable option based on their specific needs and available resources. Understanding how long a furnace typically lasts can also provide valuable insight when making this decision. Furthermore, homeowners should inquire about whether their home warranty covers furnace replacement as it could potentially offset some costs.

For those living in historic homes, it is essential to take into account additional considerations when buying a new furnace. Preserving the historical integrity while ensuring efficient heating should be prioritized. In summary, by carefully evaluating these factors and seeking professional advice when needed, homeowners can make well-informed decisions regarding furnace replacement for their older homes.

If you’re unsure about which type of furnace would be best suited for your older home or have any other questions related to this topic, don’t hesitate to reach out to HVAC professionals who can provide expert guidance tailored specifically to your situation.


FAQ 1: What are the key factors to consider when replacing a furnace in an older home?

When replacing a furnace in an older home, there are several important factors to consider:

  1. Size and capacity: Ensure that the new furnace is properly sized for your home’s heating needs. An HVAC professional can assess your home’s size, insulation, and other factors to determine the right capacity.

  2. Energy efficiency: Look for furnaces with high AFUE (Annual Fuel Utilization Efficiency) ratings. Higher AFUE means greater energy efficiency and lower utility bills.

  3. Ductwork compatibility: Check if your existing ductwork is compatible with the new furnace or if modifications are needed. Properly designed ductwork ensures optimal airflow and distribution of heat throughout your home.

  4. Venting requirements: Determine whether your old furnace uses a chimney or if it requires a different venting system. Newer furnaces may require direct venting or alternative exhaust options.

  5. Budget considerations: Evaluate the upfront cost of the new furnace as well as long-term savings from improved energy efficiency. Factor in any potential costs associated with modifying ductwork or venting systems.

Remember, consulting with an experienced HVAC professional will help you make informed decisions tailored to your specific needs.

FAQ 2: Can I install a modern high-efficiency furnace in my older home?

Yes! It is possible to install a modern high-efficiency furnace in an older home. However, there are some considerations to keep in mind:

  • Ensure that the new furnace’s dimensions fit within the available space.

  • Verify if any modifications are needed for proper installation, such as changes to ductwork or venting systems.

  • Consult with an HVAC professional who can assess your specific situation and recommend suitable options based on your home’s layout and requirements.

By upgrading to a high-efficiency furnace, you can enjoy improved energy efficiency, lower utility bills, and a more comfortable living environment.

FAQ 3: How long does a furnace typically last in an older home?

The lifespan of a furnace in an older home can vary depending on various factors, including maintenance, usage patterns, and the quality of the unit. However, on average, furnaces tend to last around 15 to 20 years.


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