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How Long Does a Furnace Last: Things You Need To Know

Jun 12, 2024

Furnaces are one of the most sturdy appliances in the home, responsible for temperature control during the cold winter months. Knowing when to replace a furnace is an essential part of home ownership, allowing you to time your purchase in accordance with your finances so that all goes smoothly. If you want to learn more about the answer to the question, “How long does a furnace last?” we can help. The furnace experts Anderson Plumbing, Heating & Air cover the details below.

How Long Does a Furnace Last?

How long do furnaces typically last if they are well taken care of? The average furnace longevity is anywhere from 15 to 20 years. Usage causes a furnace to break down, losing functionality in the more sensitive parts. Of course, usage times and the maintenance of your machine can cause this lifespan to vary greatly, with less usage and more maintenance bringing this number up significantly.

7 Signs It’s Time To Replace Your Furnace

Furnaces are dependable pieces of hardware if you keep them properly clean and checked in. That said, if you notice any of the following signs, be sure to contact a professional about replacing or perhaps repairing your furnace.

1. Weird Noises From Your Furnace

Odd noises like banging, popping, humming, or clicking can be indicative that your furnace lifespan is reaching an end. Whether it be to a loose duct, damaged blower motor, or faulty igniter, you can indicate the problem often by the noise alone. Some furnace noises to keep an ear out for include:

  • Popping: A temperature fluctuation may cause parts to pop.
  • Screeching: If you notice screeching, a faulty blower motor may be to blame.
  • Rattling: Loose ducts or other parts can cause rattling noises.
  • Humming: A broken blower motor may lead to a humming sound.
  • Clicking: Do you hear clicking? It may be from a broken ignitor.
  • Booming: Gas emissions can cause loud booms.

2. Age

You should anticipate repairs or replacements at specific milestones. That said, the furnace’s lifespan expectancy mostly depends on how well you clean and maintain it. If you use your furnace year-round, you may not last the full 20 years. Maintaining your machine can help repress the faults of age, and can help you more accurately go about estimating furnace lifespans.

3. Dirt or Soot Accumulation

If your furnace accumulates dust or dirt every time it runs, it may be time to consider a replacement. Soot is a byproduct of excessive carbon dioxide on the part of the furnace. An ineffective one results in more soot to clean, which makes more work for the owner.

4. Water Leaks

If your furnace has a broken condensate line, wondering, “How long does a furnace last?” may be a secondary question to your repair questions. A broken condensation line creates leaks, and leaks can lead to cracked heat exchangers or more serious issues that impact the furnace’s life. If you notice leaking, consult a furnace repair specialist.

5. Increased Energy Bills

If your furnace is struggling, you’ll notice via a steadily rising energy bill. Consider keeping a close eye on your energy bills as you use your furnace each season; if it rises, your furnace may be clogged with dust, meaning it’s unable to keep the place warm as easily. If the furnace isn’t dirty, it’s time to consider a replacement for a more efficient, functional furnace that can properly heat your home.

6. Uneven Temperatures

An ineffective furnace is a faulty one, which is why homeowners should be aware of fluctuating temperatures in the home. If your furnace can’t maintain heat in a room, this is a cause for concern. Short cycling, or frequent starting and stopping, show that the furnace is malfunctioning.

7. Furnace Flame Colors

If your furnace has a burner flame, the color is indicative of many things regarding your furnace. For example, a dirty burner will result in a yellow, bursting pilot flame. A regular flame for a healthy furnace is blue. Any other color, and you should consult an expert who can come evaluate your furnace to ensure that there is no danger to your home from using it.

How To Extend the Life of Your Furnace

Are you worried about the prospect of replacing your furnace? If you want to learn more about how to improve your furnace’s longevity, consider taking some advice below.

Keep Your Furnace Clean

One of the most important aspects to maintain with your furnace is the cleanliness of not just the interior, but the filters. If you have matters that complicate the issue, like pets, multiple residents, or residents who smoke, you may need to clean your furnace more often than the average homeowner. Fur, smoke residue, and even just the extra dust from having multiple people in the home can make a furnace clog easily if you don’t check the filters and clean the interior every three months.

Maintain Your Furnace Often

Maintenance work is like a doctor’s appointment for your furnace. As a long-lasting household item, getting maintenance for your furnace is essential to keeping your home in working order. We recommend scheduling a furnace inspection at least once per year.

If you’re wondering when to consider an inspection, the best time to do so is during the Fall. This is because your prime season for usage is the winter. Getting everything checked before your coldest seasons can help ensure everything is working as it should.

Work With Anderson Plumbing, Heating & Air

Furnaces have longevity, but that doesn’t mean they last forever. Now that you know the answer to the question, “How long does a furnace last?” why not get your furnace fixed with Anderson Plumbing, Heating & Air? We specialize in not just furnace replacement or repair, but in furnace maintenance tune-ups as well. If you want to consider Anderson Plumbing, Heating & Air, reach out to us at 619-728-6130 for more information. 

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