How long do lennox ac units last

Air conditioners and heat pumps last between 10 to 12 years, while furnaces last between 15 and 20 years. There will be more repairs in the future if your equipment is within those ranges.

Let's Get It Fixed!

HomeX virtual experts will assess your issue (for free!) and can resolve simple problems.

How long do lennox ac units last

How long do lennox ac units last
Are you having a problem with your Lennox AC system? Depending on the model of your unit, the problem could be the Lennox evaporator coil. Lennox Coil Problems often present early in the 12–15 year lifespan of an AC unit. After two to four years, Lennox AC units tend to:

  • Freeze up (coils)
  • Stop blowing cold air
  • Cause increased utility bills
  • Leak from the Evaporator coil (even after repairs) and appear as dark-stained “soil” buildup
  • Lower refrigerant levels
  • Corrosion
  • Repetitive issues of the above

For immediate help with your Lennox HVAC system, visit:

  • Nashville Lennox HVAC Services
  • St Louis Lennox HVAC Services

Lennox Coil Problems: A Headache for Homeowners

Homeowners were spending hundreds and thousands of dollars on Lennox air conditioner troubleshooting, plus multiple repairs and replacements of the Lennox coil. The cause of such issues was said to be formicary corrosion as a result of the thin uncoated copper tubing inside the systems rather than using aluminum. The pinhole caused by the corrosion then leads to leaks, damage, and system malfunctions.

What Is The AC Evaporator Coil?

The US Department of Energy describes this as the “cold indoor coil” that works with the compressor or pump to move a “refrigerant between the evaporator and the condenser” or the hot outdoor coil. If one or both of these coils is not operating properly, your home will not properly cool or remove humidity. Plus, your AC unit will either stop working altogether or be working overtime to compensate for the malfunctioning or low functioning coil.

Lennox Class Action Lawsuit & Recall

In 2015, a class-action lawsuit, Thomas v. Lennox Industries Inc., was filed arguing that the Lennox AC coil was manufactured and sold knowing that the copper coils were faulty and failed to address the issue or make its customers aware – even after becoming aware of the problem.

While Lennox admitted no wrongdoing or fault, they did settle on a package for affected homeowners that included:

  • Replacement of defective coils (up to three)
  • Up to $1,100 in labor reimbursement for original or replacement coils

Learn more about reimbursement eligibility for your HVAC system by visiting the Lennox website.

Which Lennox AC Systems Were Affected?

Lennox air conditioner coils that were affected include the following lines of the Lennox brand and Lennox evaporator coil model numbers:

  • Brands
    • Aire-Flo
    • Armstrong Air
    • AirEase
    • Concord
    • Ducane
  • Model Numbers
    • Lennox cbx26uh coil
    • Lennox c33 coil
    • Lennox cx34 coil
    • Lennox ch35 coil

Lennox Industries Inc. has agreed to settle a class action lawsuit about its evaporator coils, purchased between October 29, 2007 and July 9, 2015. You can obtain information about the settlement at www.evaporatorcoillawsuit.com.”1

Lennox AC Coil Replacements

How long do lennox ac units last
Since the Lennox Class Action lawsuit, Lennox has manufactured a new, aluminum-based evaporator coil – the Lennox Quantum Coil to improve the quality and performance of their air conditioning units.

Replacing affected coils is an important and necessary action to keep your air conditioner in the best working condition and to extend its life expectancy to the furthest end of its typical range. Keep in mind that other manufacturers have now rolled out reliable coil replacements, some of which may be preferred by HVAC installation experts and technicians.

The replacement typically takes anywhere from three to five hours. Installation of the new Lennox coil involves:

  • Removal and disposal of any remaining refrigerant from the system
  • Disconnection, removal, and disposal of the old coil
  • Installation of the new coil and any connecting parts rendered useless from the damage of the old one
  • Properly charging refrigerant
  • Testing the AC unit

Questions to Ask With Your Lennox Coil Replacement

In some cases, depending on the damage, age of the unit, cost for repairs or replacement of the coil, it may be more cost-effective and efficient to replace the entire AC unit. This route of action translates into higher efficiency, lower utility bills, a reliable and improved system, and more control of your comfort. Just be sure that if you replace the indoor and the outdoor unit at the same to ask about:

  • Matched system design for optimum efficiency and performance
  • Design advances
  • Higher cooling and heating efficiency
  • Equipment age: Having units of differing ages could set you up for a staggered replacement of each unit as well as decreased efficiency and shorter lifespan of the newer unit

How long do lennox ac units last

Repair or Replace? Lennox Evaporator Coil Replacement Costs

Lennox evaporator coil replacement cost can range depending on the size of your Lennox AC unit and generally is determined by:

  • Coil Capacity
  • Cost for Parts
  • Installation Labor

Lennox offers a guide for repair vs. replacement:

Multiply the unit’s age by the cost of repairs. If the total exceeds $5,000, you’ll want to replace it. You’ll want to do the same if you’re finding yourself repeatedly repairing the same system. If your system calls for the occasional repair while performing well overall—or if it is less than five years old—it’s likely a replacement won’t be necessary for some time.”

As you consider your options, call a reliable HVAC contractor that is familiar and experienced with Lennox air conditioners to perform needed AC repairs or AC replacement.


FAQ’s About Lennox HVAC Coil Issues

Does Hoffmann Brothers Repair and Replace Lennox Evaporator Coils?


How Long Should A Lennox Evaporator Coil Last?

Typically and with proper maintenance, the evaporator coil (and the AC unit) will last between 10 and 15 years.


Can I Replace An Evaporator Coil Myself?

It is not recommended that you test your DIY skills on an evaporator coil replacement, as it will take the experience and expertise of a professional to remove and replace the coil properly – and avoid future issues.


Can Evaporator Coil Leak Be Fixed?

Yes, however, the best option is likely to replace the Lennox evaporator coil altogether.


How Often Should Evaporator Coils Be Cleaned?

Just like the rest of your HVAC equipment, this piece of your AC should be cleaned and maintained once a year. Otherwise, you run the risk of a breakdown when you need AC the most.


How Do I Know What Size Evaporator Coil I Need?

his will depend on the size or tonnage of your AC. The higher the tonnage, the more heat it removes from your home. So, if you have a 5-ton system, you should have a Lennox 5 ton evaporator coil and a 5-ton condenser coil.

More Helpful Resources from Hoffmann Brothers

  • Call Us in Nashville – (615) 515-3015
  • Call Us in St Louis – (314) 664-3011
  • AC Not Cooling – Troubleshooting Guide
  • Furnace Won’t Turn On? – Troubleshooting Guide
  • How Often To Clean Air Ducts
  • How to Unclog a Sink, Bathtub or Shower
  • Carbon Monoxide in Home – Find Solutions
  • Electrical Outlets Safety Checklist
  • Environmental Impacts of Geothermal Energy and HVAC
  • Replace a Stab Lok Breaker in your Federal Pacific Electrical Panel

1. [https://www.lennox.com/owners/assistance/warranty]↩

Are Lennox AC units good?

Lennox has some of the most energy efficient HVAC products on the market, making it a good choice for those concerned with saving money on their monthly utility bill. Reviewers say its units are reliable, and because the company has three tiers of products, there's a Lennox for every budget.

Can an AC unit last 20 years?

While every unit is different, and every homeowner has a different understanding of when their central air conditioner is broken beyond repair, it's fair to say that, with proper maintenance and care, you can expect a good 15 to 20 years of cooling from a new high efficiency air conditioning system.

Can AC units last 30 years?

Air conditioners can last 10-15 years depending on various factors, while HVAC systems can even go up to 30 years before needing to be replaced.

How do I know when my AC unit needs to be replaced?

4 Signs It's Time to Replace Your Air Conditioner.
Your Air Conditioner is More Than Ten Years Old..
Your Air Conditioner Frequently Breaks Down..
Your Energy Bills Have Skyrocketed..
Your A/C Uses R-22 Freon..