How Long Should Your Furnace Last?

Furnace maintenance in Burbank, CA

Most furnaces last anywhere from 15 to 20 years. There are many variables that come into play when it comes to determining how long a furnace should last and whether or not it’s time to buy a new one. Calculating the cost of expected repairs against the cost of buying a new furnace is an excellent way to decide between spending your money on repairs or a replacement. Learning what warning signs to watch for can also help you decide between repairing the furnace or replacing it with a new one.


Older furnaces are less reliable and use more energy than modern ones do. If your furnace is over 10 years old, it’s important to carefully consider the costs of expected repairs versus what it will cost to buy a replacement. Many times, purchasing a new furnace is a wise decision that ends up paying you dividends in the form of reduced utility bills and better interior comfort over time.

Increasing Heating Bills

As the heater gets older, it uses more power than it did when it was new, causing your heating bills to get higher and higher. If your heating costs keep going up, it’s often smarter to upgrade to a newer, more cost-effective model instead of spending money on constant repairs and rising energy costs. This not only helps save money on utilities every month, but it also guarantees a dependable and efficient heating system, which results in greater comfort and savings over time.

Frequent Repairs

Any heating system that requires constant repairs is far beyond its prime. In addition to driving up maintenance costs, frequent repairs and maintenance are a huge warning indicator that the unit is becoming less reliable. To get greater long-term performance with fewer frequent breakdowns, a new furnace is an investment that is both practical and economical.

Strange Noises

Any time you hear banging, rattling or moaning coming from your furnace, it’s a sure sign that there are mechanical problems. These sounds may indicate a malfunctioning part, a broken motor or some underlying issue. If you disregard these noises, you might end up with expensive repairs or possibly a broken system. By paying attention to these red flags, you can replace your furnace before it becomes a safety problem and enjoy the benefits of a quieter, more dependable heating system.

Excessive Dust

An old or inefficient heating system can lead to unhealthy levels of dust in the house. Older units often fail to filter and disperse air adequately, leading to a buildup of dust and allergies. This is a sign of decreased performance and a threat to the quality of indoor air. A modern furnace with better filtration will reduce dust-related problems, enhance indoor air quality and comfort and minimize the frequency of repairs and maintenance.

Inconsistent Heating

When a system is too old, it may lose the capacity to keep a constant temperature, which may cause discomfort in different rooms throughout your home. Worn parts or decreased efficiency usually cause this discrepancy. A new furnace will provide consistent and efficient heating throughout your house, increasing your level of comfort and mitigating the inefficiencies that cause temperature variations in various rooms.

Unreliable Thermostat

An old furnace is sometimes accompanied by a temperamental thermostat. A decrease in system efficiency may be to blame if your thermostat has trouble responding reliably or keeping the room at the appropriate temperature. By upgrading to a new furnace, you can manage the temperature in your home with more precision and enjoy a more pleasant atmosphere thanks to increased system dependability.

Visible Rust and Cracks

Rust or fractures in the furnace are obvious signs of wear and tear that put the safety and effectiveness of the system at risk. Rust compromises the strength of the structure, and gaps let poisonous gases like carbon monoxide seep into your home. Both the furnace’s functionality and the safety of the home’s inhabitants are in danger due to these problems. If the furnace has obvious damage, replacing it will result in a safer and more dependable heating system, reducing the risk of accidents caused by structural failure or gas leaks.

Poor Indoor Air Quality

Increased dust, allergens or pollutants are indicators of a failing or outdated heating system, which may also contribute to a general decline in indoor air quality. Older units struggle with filtering and circulating air adequately, reducing the overall purity of indoor air. If you want to enhance the air quality in your home, installing a new furnace with high-tech filtration systems is a great investment. In addition to improving air quality, replacing a furnace also shows that you care about creating a more sustainable and eco-friendly home.

What Affects How Long a Furnace Lasts?

A furnace’s efficiency and longevity depend on a number of parameters that interact with one another. You can significantly increase the lifespan of your furnace with regular care and maintenance. This includes scheduling annual maintenance as well as changing the air filter on a regular basis. This type of preventative maintenance keeps the system running smoothly and reliably.

Another way to extend the life of the furnace is to ensure a licensed technician performs the installation. Size, ductwork and calibration all play a role in a system’s performance and longevity. Licensed technicians have the knowledge and tools that are necessary to guarantee a successful installation. The quality and layout of the furnace are important factors as well. High-end products with cutting-edge specs tend to hold up better over time. Energy-efficient versions frequently face reduced stress, resulting in a prolonged operating life.

Always keep in mind that the more often you use your furnace, the more wear and tear it will sustain. Longer hours of use may be necessary in regions with severe winters, cutting into the system’s expected service life. Humidity and air quality, for example, might have an impact on a furnace’s inner workings by speeding up the corrosion and rusting processes. The best way to counteract extreme wear and tear and poor humidity levels is by scheduling regular maintenance.

The life expectancy of the furnace is susceptible to changes brought about by technological progress. Older furnace models may become inefficient or outdated when newer, more technologically sophisticated versions enter the market. You should never attempt to overwork a furnace, for example, by routinely setting the thermostat to high temperatures. This will cause severe stress on the furnace and shorten its lifespan.

If you’re not comfortable changing the filter on the furnace, a licensed technician can always do it for you. Here at Air Max HVAC, we help Burbank homeowners all the time with regular filter changes and furnace maintenance. We are always looking for ways to help homeowners save money on heating and cooling through a variety of services, including utility rebate appraisals, home energy audits, service agreements and more. Our company also provides maintenance and repair services for air conditioners. Contact us today to learn more about the warning signs to look for when deciding whether to repair or replace the furnace.

Tags: ,