How Long Do Boilers Last?

Boilers in the home serve us by providing heat. Their absence can disrupt the functioning of our homes and impede our comfort.

However, buying new boilers is an expensive investment. At the same time, installing a boiler can be a laborious process.

Due to this, people often ask: How long do boilers last? The motivation behind this question is obvious. You want to know whether your investment is cost-effective and long-lasting or not.

 The answer to that question, however, is not so easily explained. The durability of the boilers depends on the product’s brand, machinery, and maintenance.

Keep reading to find out the average life span of a boiler, what you can do to increase its lifespan, and when you need to upgrade to a new boiler.

How Long Do Boilers Last?

The average life span of a boiler is between 10-15 years. You may have, however, noticed up to 20 years of lifespan in your households, thanks to an occasional hammer. This depends on the quality and longevity of the appliance.

It is paramount that you estimate the quality of the boiler before buying it. A cheap boiler may reduce your cost in the short term, but it will ultimately end up costing more due to its inefficient operations.

How To Prolong The Life Of Your Boiler?

To keep your boiler functioning for as long as possible, there are certain simple measures that you can follow:

Arrange regular repairs

Sometimes, the whack of a hammer can fix things temporarily. But to ensure the boiler has a long life, you should arrange repairs as and when needed. Do not put off the repairs. It will make things difficult for your boiler and its longevity.

Further, it is recommended that you organize an annual service. Just as a car or an air conditioner requires maintenance to work effectively, a boiler needs maintenance. Therefore, make sure you arrange annual boiler services with the company.

Purchase an efficient system

First and foremost, select an efficient boiler. We know you do not want a boiler that breaks down frequently.  Look for reliable boiler brands with quality customer service and assured performance.

Buying a boiler is a substantial investment, so make a wise decision!

Choose the size of the boiler wisely

Make sure your boiler is the right size for your home. A smaller unit would put excessive pressure on the system and reduce its lifespan.

On the other hand, a boiler that is too large will “short-cycle,” meaning it will shut off frequently. This leads to more wear and tear, reducing the vitality of the product.

Monitor the heating system

Monitor the boiler and note if there are any atypical changes. If you have noticed a change in the boiler’s performance, you should contact the boiler company or a heating professional for advice.

When Should You Replace Your Boiler?

Even if your boiler is operating after 10 years, you should still consider getting a new one. Why do we recommend this?

A new boiler will be more efficient than the new one. The quality of heating will improve. Also, you can quickly save money by buying a comparatively energy-efficient boiler.

Some signs that mean you should replace your boiler include:

  • The boiler is over 15 years old- Even if your boiler is seemingly working, an older boiler is not as efficient as a newer one. A newer boiler may cost more initially, but it is worth the cost. It can help save energy, paying up for the cost within 2 years of the purchase.
  • Frequent breakdowns– This is a clear indicator that your unit needs replacement.
  • Parts for the replacement are not available in the market-Your old boiler may be working fine. But what if it breaks down. Do you think you would be able to find the replacement parts in the market? This is next to impossible. It is both difficult to find and expensive to buy the part. A complete replacement seems like a better option.
  • Losing pressure– Losing pressure or leaking is a sign that your boiler is on its last legs. You can prevent critical damage or risk by replacing your unit.
  • Lukewarm water coming out- If you notice that the boiler is not releasing hot water, then it signals a breaking down boiler. Lukewarm water instead of hot water is indicative of inefficient working.

Other signs of breakdown-

  • Unusual noises

Gurgling, whistling sounds are likely caused by air or build-up of materials. If left unattended, this can lead to the breakdown of the boiler.

  • High energy bills

If you are receiving high energy bills, then it signals that your heating unit is no longer efficient.

  • Uncommon smells

An uncommon smell could be indicative of a gas leak. The uncommon smell is no laughing matter. Pay attention immediately.

Last Updated on April 11, 2021

Frequently Asked Questions

Can A Boiler Last 30 years?

The average life expectancy of a boiler is 20 years. Despite this, yes, some boilers can last up to 30 years. However, a 30-year-old boiler will break down frequently and need persistent repairs. You may spend more than the product cost on the repairs, which is not the best scenario.

You could be pushed down to the edge when a particular part of the product is not available in the market. Therefore, you should replace your boiler after 15 years.

Are Old Boilers Dangerous?

Old boilers are not life-threatening, but they can be dangerous when you ignore red flags. If the pilot light has turned yellow or orange, it indicates poor combustion.

This is a serious situation. Turn off your boiler immediately and contact the boiler agency. Other risky signs are:

  • Smell of gas
  • Brown/black marks on boiler
  • Signs of soot

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How efficient is a 20-year-old boiler?

A 20-year-old boiler is 75% efficient. And what does that mean? Here are the efficiency rates based on age:

  • 10-20-year-old- 80-85%
  • 20-25-year-old- 75%
  • 25+ years old- 60-70%

An efficient boiler should have an efficiency of 90%, a condition only met by boilers with 0-10 years of age. An efficiency of 80-85% is also suitable for everyday use.

However, an efficiency lower than this indicates that you’re significantly losing energy, which means that the heating unit is not cost-effective anymore.

David Thompson

Author: David Thompson

Dave has been involved in the UK building sector for over 3 decades and has developed a particular interest in energy efficiency in the home.

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