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how long do heat exchangers last

by Elijah Sipes V Published 3 years ago Updated 2 years ago
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While heat exchangers are typically manufactured to last between 10 – 20 years, many factors can accelerate the process of heat exchanger failure. These factors usually fall under the categories of poor maintenance, poor initial system design and installation, or poor equipment design by the manufacturer.

Full Answer

How long does a furnace heat exchanger last?

Surprisingly, older furnaces often live longer than their modern counterparts. In the past, heat exchangers were often built with heavy metals, such as cast iron. These exchangers can last as long as 30 or 40 years, much longer than the steel exchangers most manufacturers build today.

How long will my heating system last?

Here’s a list of how long you can expect each type of heating system to last: Gas furnaces will last 15 to 20 years with proper maintenance. Some older furnaces made with cast iron heat exchangers can last 30 years or more, but these are not commonly found in the 2020s, and less energy-efficient than modern gas furnaces.

Can you replace a leaky heat exchanger on a furnace?

Cost: although it is possible to replace a leaky heat exchanger on many furnace models (not all), the labor cost and total cost investment in such a replacement in an older furnace is questionable enough that more often the ultimate cost is that of a new heating system.

How long does it take to register a new heat exchanger?

See GOODMAN HVAC MANUALS & ERROR CODES Watch out: most furnace heat exchanger warranties as well as overall product warranty require that you register your heating system within a limited time period after its installation, typically within 60 or 90 days. If you fail to register a more limited warranty of shorter duration may apply.

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Is it worth replacing a heat exchanger?

The cost of replacing a heat exchanger ranges from $2,000 to $3,500. Replacing your furnace's heat exchanger would be a good route to take if your furnace is fairly new. However, it is not worth spending your money on replacing your heat exchanger when it is near the end of its life span, which is ten years or more.

What are the symptoms of a damaged heat exchanger?

Six Signs Your Furnace Heat Exchanger May be CrackedStrange smells. A malfunctioning heat exchanger will often create an unpleasant and strong odor that smells similar to formaldehyde.Soot Build-up. ... Corrosion & Cracks. ... Change in the flame appearance. ... Audible Sounds. ... Presence of Carbon Monoxide.

What's the average life of a heat exchanger?

15 to 25 yearsIn the past, heat exchangers were often built with heavy metals, such as cast iron. These exchangers can last as long as 30 or 40 years, much longer than the steel exchangers most manufacturers build today. Modern stainless or aluminized steel heat exchangers typically have a life span of 15 to 25 years.

What causes heat exchangers to fail?

Corrosion is a common cause of heat exchanger failure in process applications. The mechanisms of corrosion-induced failure include pitting corrosion, galvanic corrosion and condensate grooving.

What happens when heat exchanger fails?

It will expose you to toxic gases like carbon monoxide. Cracked heat exchangers and carbon monoxide poisoning are responsible for hundreds of fatalities in the U.S. To keep your family safe, you need to inspect and maintain your HVAC regularly. Thankfully, HVAC maintenance plans in Phoenix are affordable.

How do I test a heat exchanger?

0:152:22Simple Furnace Heat Exchanger Test | Lennox Learning SolutionsYouTubeStart of suggested clipEnd of suggested clipAnd easiest ways to test them while it's true we can disassemble the heat exchanger take theMoreAnd easiest ways to test them while it's true we can disassemble the heat exchanger take the manifold. The burners out and do a visual inspection.

Can a heat pump last 30 years?

Like heat pumps, ductless mini-splits can provide both heating and cooling, with a typical life span of 10 to 30 years, except in coastal areas.

Can you replace just the heat exchanger in a furnace?

You can't repair or replace a heat exchanger because there's too big a risk of carbon monoxide leaking into your home. It's also cost-prohibitive. That's why you need to replace the entire furnace.

What is a lifetime heat exchanger warranty?

What does the Lifetime Heat Exchanger Limited Warranty include? On select furnaces, Goodman offers a Lifetime Heat Exchanger Limited Warranty* to the original, registered homeowner. If the heat exchanger fails during the first 10 years of ownership, Goodman will replace the entire unit for as long as you own the home.

How often should a heat exchanger be cleaned?

every one to three yearsTypically, heat exchangers are cleaned every one to three years, depending on the type, size, and service. Keeping heat exchangers free of buildup from sediment, hard water deposits, chemicals, and solids via thorough and proper cleaning improves operational efficiency, and extends the exchanger lifecycle.

Can a heat exchanger be repaired?

Unfortunately, heat exchangers cannot be repaired. When a heat exchanger cracks or rusts through it must be replaced. Because the heat exchanger is at the center of the furnace, nearly the whole furnace must be disassembled.

How do I know if my heat exchanger is clogged?

What are the Signs of a Plugged Secondary Heat Exchanger?The condensate in your condensate drain pan is brown or black. The dirty drain pan is a sign that the condensate is carrying unwanted debris to the drain pain. ... Your carbon monoxide alarm goes off. ... A Pungent Odor. ... Water Leaking from the Furnace.

How do I know if my heat exchanger is clogged?

What are the Signs of a Plugged Secondary Heat Exchanger?The condensate in your condensate drain pan is brown or black. The dirty drain pan is a sign that the condensate is carrying unwanted debris to the drain pain. ... Your carbon monoxide alarm goes off. ... A Pungent Odor. ... Water Leaking from the Furnace.

How can a heat exchanger be examined for damage?

There are 3 methods used to inspect heat exchanger tubes—eddy current testing, internal rotary inspection, and visual inspection with a videoscope—and each have their own advantages.

Can you run a furnace with a cracked heat exchanger?

Rule #1: If your Heat Exchanger has been deemed cracked by a HVAC professional you should NOT be running it. Unfortunately, some owners will attempt to run their furnace even when a cracked heat exchanger has been detected.

Can a heat exchanger be repaired?

Unfortunately, heat exchangers cannot be repaired. When a heat exchanger cracks or rusts through it must be replaced. Because the heat exchanger is at the center of the furnace, nearly the whole furnace must be disassembled.

What Is A Heat Exchanger?

The heat exchanger is a thin metal part that connects the combustion chamber to the blower. It is responsible for separating the chemicals produced during the combustion process from the air you breathe, and it helps to distribute the heat created by your furnace to your home.

How Much Does A Heat Exchanger Replacement Cost?

The average costs for replacing your exchanger is about $1,500.

How Do You Know If You Need A Heat Exchanger Replacement?

The average homeowner may not even realize their heat exchanger needs repairs. Even a cracked heat exchanger may not be visible to the naked eye.

What happens if your furnace is not working?

If it is not working correctly, your furnace may struggle to maintain a comfortable temperature. A cracked heat exchanger could cause harmful gases to buildup in your home if you have a gas furnace.

How much does it cost to install a furnace?

The bottom line is, if your heat exchanger is cracked or damaged, you will need an HVAC technician to do a furnace installation. The furnace will cost around $5,000 with installation costs and most new units include a lifetime warranty.

How much does it cost to install a heat exchanger?

That means even if your heat exchanger is completely covered under the maker’s warranty, you can expect to pay around $500 to have it installed. That is why thousands of homeowners across the country invest in a home warranty plan.

When does a home warranty pick up?

Your home warranty picks up when the manufacturer warranty expires and it helps you pay for parts and labor up to the limits of the policy for all covered items. So, you do not have to worry about whether you need a new heat exchanger or a total furnace replacement.

How Long Does a Boiler Heat Exchanger Last?

The average life expectancy of a new boiler heat exchanger depends on various factors, but approximately this is 6-10 years for aluminium and 10-15 years for stainless steel (and a whopping 20 years or more for cast iron but finding a new and reasonably priced boiler with a cast-iron heat exchanger is next to impossible). This is why we always recommend purchasing from manufacturers that use stainless steel boiler heat exchangers – they’re sturdier and more durable than aluminium, therefore they tend to last longer. Bear in mind that some causes of heat exchanger fault can be due to installation error, so it’s very important to hire a professional when replacing your heat exchanger.

How much does it cost to replace a heat exchanger?

To make matters worse, most damaged heat exchangers cannot be repaired at all but only replaced, so you can expect to pay anywhere between £300-£600 for a new component.

What is a Boiler Heat Exchanger and How Does it Work?

Before we jump to the most common symptoms and causes of a faulty heat exchanger, it’s important to understand exactly what a heat exchanger is and how it works.

What makes a heat exchanger make a noise?

Odd noises: like limescale build-up, a build-up of heating sludge will often make a heat exchanger make odd noises. However, noises that the sludge build-up creates are different from kettling or whistling noises; these noises can often sound like tapping or scratching as the rust passes through the exchanger.

What does it mean when a heat exchanger smells?

Strange smells: a damaged heat exchanger can sometimes release strange and unpleasant odours, which can cause headaches and other physical symptoms such as watery eyes. If you notice any strange smells similar to that of formaldehyde, contact a boiler engineer.

Can you clean a heat exchanger?

A boiler heat exchanger can and should be cleaned from time to time but we only recommend you do this with the help of a professional. An engineer should first thoroughly inspect the boiler heat exchanger so they can see if the problem can be fixed by simple cleaning. Bear in mind that some heat exchangers require special cleaning products; for instance, stainless steel exchangers should not be cleaned with hydrochloric acid.

How long do furnaces last?

In the past, heat exchangers were often built with heavy metals, such as cast iron. These exchangers can last as long as 30 or 40 years, much longer than the steel exchangers most manufacturers build today.

Why does my furnace heat exchanger fail?

Even a perfectly maintained heat exchanger will eventually fail, due to the constant cooling and heating of the metal. No one can guarantee how long your furnace will last, but by taking these measures, you can greatly impact its expected life span.

How long do forced air furnaces last?

So why do forced air furnace heat exchangers usually survive an average of 15 years ? The answer is simple: your furnace’s life span depends heavily on how you treat it. Follow these simple guidelines to make sure your furnace lasts as long as possible:

What is the standard for measuring furnace life?

The standard for measuring furnace life is the heat exchanger. Not only is this the most vital part of the system, it’s the one piece that can’t be repaired or replaced. Once it fails or cracks, it’s time to buy a new furnace. Because of this, furnace life varies heavily based on the quality and type of the heat exchanger.

Is it safe to maintain a furnace?

Regular maintenance isn’ t just part of extending furnace life. It’s also part of keeping your home safe. A faulty or leaky heat exchanger can be difficult to notice and very dangerous, considering it releases combustible gases into your home’s air. Other problems, like dirty ducts, can cause or aggravate health issues.

How long should a furnace last?

Here’s a list of how long you can expect each type of heating system to last: 1 Gas Furnaces: 15-20 years typically 2 Boilers: 15-30 years 3 Heat Pumps (not Ductless): about 15 years 4 Ductless Mini-Splits: 15 to 20 years 5 Active Solar Heating: 20 to 30 years 6 Electric Furnaces: 20 to 30 years

What is the Average Lifespan of a Furnace or Heating System?

In Northern California, the most common types of residential heating are furnaces and heat pumps and ductless mini-splits.

How Will I Know When It’s Time to Replace My Furnace?

There are some clear indicators that you’ll be shopping for a new furnace in the near future. Here’s a list of signs to look for. If your furnace has several of these signs, we recommend researching furnaces and home heating systems.

Why invest in a furnace?

Investing in a high-quality furnace and HVAC system will help the longevity and efficiency of your heating unit. Cheaper units tend to burn out and break down more quickly than trusted brands.

What does it mean when a furnace feels cold and warm?

When one room feels warm, and another feels cold, that means the furnace is not working correctly. This can be a sign the furnace is reaching end of life.

Where is the furnace located?

Most furnaces are located in the garage, attic, or a closet. In any case, make sure your furnace has adequate clearance and ventilation. If there is too much moisture or not enough air flow, the heat exchanger can be damaged, reducing the life span of your heating unit.

How long does it take to install a furnace?

The installation time will vary depending on the size of your home, skill of the heating contractor, and type of furnace you are installing, but most furnace installations take between 4 and 10 hours.

How long does an electric furnace last?

An electric furnace can last from 20 to 30 years. While electric furnaces are more expensive to operate than gas, you may get an extra decade of heat.

What impacts how long my furnace lasts?

While fuel source is a major point to consider, it’s not the only factor at play. A range of issues can extend or shorten your furnace’s lifespan.

How long does a furnace filter last?

How long a furnace filter lasts depends on lifestyle characteristics, like pets or smoking in the home. The filter’s thickness may also indicate how often it should be replaced. The table below shows our suggested timeframe for changing your furnace filter.

Is it time to replace my furnace?

Most furnaces come with a limited 10-year warranty. Once that time runs out, though, you’re on the hook for parts, labor, and more.

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