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How Long Does A Furnace Last?

 
A furnace is a significant investment in your home’s comfort, and understanding how long it can last is essential for planning future replacements or upgrades. The lifespan of a furnace can vary based on several factors. In this guide, we’ll go over how long a furnace lasts, factors that affect furnace lifespan, and steps you can take to help increase how long your furnace lasts.
a bryant dealer explains how long does a furnace last to a couple

How Long Does A Furnace Last?

A well taken care of furnace can last between 15 to 20 years. Proper maintenance, such as regular inspections, filter changes, and cleaning, can help extend the life of your furnace and ensure it operates efficiently for as long as possible. However, if your furnace is nearing the end of its expected lifespan and requires frequent furnace repairs, it may be time to consider a furnace replacement.
 

Factors That Affect How Long A Furnace Lasts

The lifespan of a furnace can vary dramatically based on a variety of factors. Below, we walk through some of the major factors that affect how long a furnace lasts. 

Furnace Type and Quality

Gas furnaces typically last between 15-20 years, while electric furnaces may last longer, sometimes up to 30 years. Higher-quality furnaces with premium materials and advanced technology tend to last longer than lower-quality models.

Maintenance and Service

Regular furnace maintenance (such as cleaning, filter replacement, and annual inspections) can significantly extend a furnace's lifespan. Neglecting maintenance, like failing to change the air filter or cleaning the components, can cause the furnace to wear out more quickly.

Usage and Workload

The frequency and intensity of use play a major role. If your furnace is used year-round or is heavily relied on for heating, it may wear out faster. Short cycling, when a furnace turns on and off frequently, can also shorten its lifespan due to increased wear and tear.

Proper Sizing

A furnace that is either too large or too small for your home can wear out prematurely. An oversized furnace will cycle on and off too frequently, while an undersized one will overwork to heat the space, both leading to strain and potential breakdowns.

Air Quality and Filters

Poor indoor air quality, such as high dust levels or unclean ducts, can affect the furnace’s components and lead to more frequent repairs. Regularly replacing furnace filters keeps the furnace running smoothly and prevents damage to parts like the blower motor.

Installation Quality

A furnace that is properly installed by professionals is more likely to last longer. Incorrect installation can lead to inefficiency, frequent breakdowns, and premature failure. Learn more about furnace installation.

Climate and Environmental Conditions

Homes in areas with extreme temperatures may put more strain on the furnace, leading to a shorter lifespan. Humidity and exposure to salt or corrosive elements (common in coastal areas) can also affect the furnace’s longevity.

Technology and Features

Newer furnaces with energy-efficient technologies (like modulating gas valves and variable-speed blowers) tend to last longer due to better components and more durable designs.

Repairs and Parts Replacement

Timely repairs and replacing worn-out parts can extend the furnace’s life. A well-maintained system will last much longer than one that has been ignored or repaired with low-quality parts.
 
In summary, with the right care, a furnace can last on the upper end of its expected lifespan. Regular maintenance, proper usage, and ensuring it’s the right size for your home can help extend its life and improve efficiency.
 

How To Extend How Long Your Furnace Lasts

Extending the lifespan of your furnace involves regular maintenance, proper care, and mindful usage. Here are several steps to help you get the most out of your furnace:

Schedule Regular Maintenance

Have a professional HVAC technician inspect your furnace at least once a year, ideally before the heating season begins. A technician can identify issues before they become major problems. Regular cleaning and lubrication of furnace components, such as the blower motor, can prevent wear and tear and ensure smooth operation.

Replace Air Filters Regularly

A clogged or dirty filter can reduce airflow, forcing your furnace to work harder and causing overheating or system failure. Replace filters every 1-3 months, depending on use and the type of filter.

Ensure Proper Ventilation and Airflow

Keep vents, ducts, and registers clear of obstructions (such as furniture or curtains) to ensure proper airflow. Poor airflow can strain the system and reduce its efficiency. Ensure that your ducts are sealed and insulated properly. Leaky ducts can waste energy and make your furnace work harder.

Keep the Furnace Area Clean

Keep the area around your furnace clean and free from dust, dirt, and debris. Excess dirt can block airflow and cause the furnace to overheat. Ensure nothing is blocking your furnace’s intake or exhaust vents, which can restrict airflow and cause the system to work harder.

Maintain Proper Humidity Levels

Excessively dry air can affect your furnace’s efficiency. A whole-home humidifier can help maintain proper humidity levels and reduce strain on the system. Too much moisture can cause rust and corrosion in your furnace’s components. Keep humidity levels in check. Learn what humidity should my house be at?

Optimize Thermostat Settings

Set your thermostat to lower temperatures when you're not at home and raise it just before you return. This helps your furnace operate more efficiently. Avoid frequent temperature fluctuations as constantly adjusting the thermostat can cause the furnace to cycle on and off frequently, shortening its lifespan.
a bryant dealer explains how thermostat settings affect how long a furnace lasts

Keep an Eye on Furnace Performance

Pay attention to any unusual sounds like banging, rattling, or squealing. These may indicate a mechanical issue that needs attention. If your furnace starts blowing cold air, taking longer to heat, or producing strange smells, call a professional to inspect it.

Ensure Proper Sizing

If your furnace is too small for your home, it will be forced to work harder, reducing its lifespan. Similarly, an oversized furnace can cycle on and off too frequently. Ensure your furnace is properly sized for your space.

Replace Worn-Out Parts Promptly

If any part of your furnace starts to show signs of wear (e.g., a malfunctioning blower motor or damaged heat exchanger), have it repaired or replaced immediately. Delaying repairs can lead to more significant damage.
 

Connect With A Bryant Dealer On How Long A Furnace Lasts

Connecting with a Bryant dealer is a great way to get expert advice on how long your furnace can last and what steps you can take to extend its lifespan. Bryant dealers can help you assess the age and condition of your current system, provide regular maintenance tips, and guide you through the process of choosing the right replacement furnace when the time comes. With a Bryant furnace, you can expect reliability, energy efficiency, and long-term performance. Schedule an appointment with your local Bryant dealer to ensure your home stays comfortable for years to come.
 

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