Lennox Reviews

I paid $11,000 for my A/C to be replace. I am so sick of this unit that I’m thinking of tying a rope around it yanking of my garage. It has cost me more money than my old A/C and it shouldn’t be like this. These units attract mold to enter. Clogged several times. iFlo products don’t work. Sick of this junk!

We bought a Lennox HVAC (more like LEMONOXX) around 11 yrs ago. After 5yrs the system started having problems. The coil started leaking. $6500 to replace it and guess what? Out of warranty. Also Lennox has a law suit against it for defective coils. Temporary fix add dye sealant. At this time it still leaking refrigerant, Then thermostat went out, contactor started going out, 2nd capacitor was going out. Heater burners started rusting. The LEMONOXX was a 9$9500 waste of money. I will never buy another one and I will tell everyone it know that LENNOX is garbage.

STAY AWAY FROM LENNOX! We purchased a BRAND-NEW Lennox commercial A/C unit for our restaurant, installed June 20. It had problems FROM DAY ONE. This wasn’t an old unit that eventually failed. Our contractor encountered multiple issues, including incorrect factory wiring, defective electrical/control components, insulation coming loose and obstructing airflow, the evaporator coil freezing, pressure-related shutdowns, and additional refrigeration-system problems. Parts were replaced. Wiring was corrected. Technicians made repeated visits. The problems continued.

I bought a Lennox System in December 2025. The company that installed it I already had a service contract with. They installed it, badly. The filter guides were upside down, filter sucked into the furnace. They argued with me, I showed them the documenation. They fixed it on the 3rd visit. It also whistled, they came and taped all the seams. Everytime I asked why the system was so loud.

Do not purchase a Lennox Mini Split System. Compressor went out. It’s still under warranty. They will replace the compressor. It was ordered early June by my air conditioning company from Lennox and maybe I will receive in October. No exact ETA! By then will I have other issues with the system that is sitting? The cost to the home owner to install the compressor, new freon is on them. It just the compressor that you might receive someday!

Unit cost 10,500.00, has had to be serviced 5 times in the 1 year three months we have owned it. The ten year warranty is a joke. Begged for a new system, have been hot for days...they are horrible.

I work in the AC field for 13 years or more. I just wanna say that Jesus at Naples Lennox supply was the most helpful person I’ve had helped me order a blower motor for a customer. He went above and beyond to help me figure out things there was some issues along the way and he was awesome. The guy needs to train everybody that works at Lennox. Thank you so much Jesus. Can’t say it enough.!

Very bad customer service. I was on the phone for almost more than two hours, but no one answered the call.

I registered my ac equipment in 2020 when I moved in the new construction home. My 6 year old condenser not rejecting heat. I called Lennox for warranty claim. They told me it’s not registered. I have no warranty left unless I registered. I would have 10 years warranty now. I have a expense that I have to deal with.

In 2026 I bought a new Lennox AC - I live in Phoenix Arizona. Exactly three years later, it completely died. I had a full warranty on parts and labor. It is 118 degrees outside and I have had the company who sold me the product to my house 5 times in one week. Still no solution. Lennox refuses to replace the entire unit yet they don't have the parts necessary to service the unit either. I can't even explain this experience, I have cried, begged, written the State of Arizona Depart of Contractors, local news stations, everyone. Here I sit in a boiling house with nothing I can do. Lennox should burn to the ground. If you read this review and you still buy a Lennox product, you will learn the hard way. My only option at this point is litigation. Once I figure out how to breath and survive today and the next 3 days of 115+ degree weather I am coming for Lennox and the dealer.

Lennox AC systems have leaky bad coils and bad compressors. Even worse, Lennox warranties are fake, and they will not repair our new AC system as stated by the fraudulent warranty. We purchase 2 new AC systems through our builder, Lennar, and they too are not doing anything about it. Service techs say that Lennox is the worst of all the AC companies to buy from. We wish we had known that before our purchase.

Lennox warranty service is terrible! 4 months ago the service company replaced the motor in warranty. 4 months later I’m still waiting on a refund!

We have a two year old home and the AC unit has gone out twice!!! It's ridiculous how bad these units are and how expensive they are to repair.

We had a Lennox Hvac system installed Dec 2018. First had to repair about 18 months after purchase. Compressor has been replaced twice. Other defective parts as well. So 7.5 years later, we opted not to fix this thing again. And we did NOT replace it with another Lennox.

I can't say how much I hate literally hate the filter replacement being horizontal. It's always stuck when I try to change it out. Those little three prongs doesn't hold it in place and to try to screw it back in at the end two ends is nearly impossible. It should not take me an hour to try to change out a filter when when the old fashioned ones were vertical and you just let them in and out they worked great in and out in 2 seconds. I would give them a minus 10 if I could.

I am providing this review in hopes of providing the whole experience with the Lennox hvac system.... I had a new unit (Lennox) installed by them in 2019. Fast forward to today I have had an extensive repair record. Everything thing from the outside to the inside unit has been replaced. In Jan 2026, after the winter service, I have been experiencing a spike in my electric bills. They have been out multiple, multiple times. No improvement. The tech who performed the spring service reported a damper regulator part was missing. What happened to it?

LENNOX heat pump was installed in November 2025. I already have to call installer twice because my house is not getting cold. I just spoke with Lennox customers service and the girl who answered the phone did not know how to talk to customer! Very rude! After spending top ($) if I have to call the installer every few months for them to come out and fix the problem that is very disappointing! And on top you have to experience rudeness from their customer service? 2 star for product failure and rudeness!

AC start having problems the second year, almost have to fix every single year after until the expense grow so much in the 10th year. Talked with their customer service, they are like, "That's out of warranty". DO NOT BUY LENNOX if you want quality and reasonable price.

Air conditioner broke in less than a year and they leave you waiting for over a week because they can't get the parts from Lennox.

Lennox is one of the most unresponsive companies I’ve ever dealt with. I used their online “contact us” form twice in April 2026 asking basic questions about their HVAC packaged units. I also tried repeatedly by phone to get to the “right” person for answers. Finally spoke with a very polite rep but she couldn’t/wouldn’t answer my main questions. In May 2026, after completing a review of our new Lennox LRP15 HVAC (per their solicitation) I finally got a response. See later in this review.

Terrible customer service. Brand new Elite Heat Pump fails to reach set temperature. Rep at Lennox could not have cared less and didn't even bother to ask what was going on. I made a costly mistake choosing Lennox. Buyer beware.

Basically I have a 13 month old ac unit (3ton) that needs a condenser coil, and Lennox says they will supply the coil, but I have to eat $1445.00 in labor and other materials for the repair. This unit is only 13 MONTHS OLD!! Are you kidding me. I have already put out $300 for the ac contractor to do a service call and recharge the unit so it keeps going until they get the new part from Lennox. Lennox bills itself as a high quality unit, but it's really JUNK!

We live in a new build; unit ONE YEAR OLD but, of course, a couple of weeks out of one-year warranty. A/C stopped working (live in Florida so essential). Called company and was told it wasn't "maintained properly". Didn't even know what the issue was because they never asked. What "maintenance" is needed after one year? Now will cost me, retired on a fixed income, over $3,000 to fix. Company could care less. I never post stuff but felt like I had to chime in with all the other unhappy customers.

Horrible customer service experience. My brand new AC's evaporator coil went bad in Year 1, blower motor changed in Year 2. AC coil went bad again in Year 3. I spoke to Carmen at Lennox. No apologies, didn't care. Waiting for 3 weeks without AC and may have to wait another two weeks. They will cover the coil but not $3k+ labor charge. Perfect example of big corporations- don't care attitude.

Lennox will not sell parts directly to the homeowner even if you live in a State with Right to Repair laws. They also have sent updates to thermostats to make them non-functional. Lennox pushes their warranty; however dealers (at least in my area) charge more than the cost of a thermostate just for labor to install it. This high labor cost negates any benefit of the warranty if the consumer pays more than the unit itself for each installation. The unit has been very quiet and efficient. It does a great job keeping the house at the selected temperature. However, the negatives have far outweighed the benefits.

I reported Thursday that my unit was not cooling at all. My unit is four years old and inspected twice a year by Tempo. The fan was dead, and the compressor sounded pretty bad, the Tempo technician said. I am extremely disappointed with Lennox for putting out an inferior product. We are still paying for the unit and now face a 500 install fee for the fan. And possibly a 1900 install fee for the compressor for a four-year-old unit. Thanks, Lennox for covering the parts but not the labor cost on a four-year-old unit????

September 2025. Avoid at all cost. I bought 3 heat pumps for 2 properties in Canada. The compressor on 1 sounds like it’s going to explode on startup. Lennox tech admitted that they changed compressor supplier and replaced my entire unit even though the compressor is the same. Insofar as the second unit, the tech said that ever since the defrost sensor was moved the unit becomes a solid block of ice. Lennox doesn’t give a hoot. Spent over $30,000 on junk! Stay away!!!

Bellows Plumbing: Mini split review. In November of 2023, I needed to replace my old gas wall heater. Our home is older and we needed something new. I decided on a Lennox mini split system after seeing a display at Costco. The package included having Bellows Plumbing, a local HVAC contractor install the system. We had this work done in January of 2024.

I could write a novel of the problems with this company. Their "units" are pure junk and don't even function or operate to accords, see all the other reviews firsthand. I had the unfortunate experience of buying a $10,000 Lennox Unit, and in the first week the damn unit got fried due to a faulty element. About a dozen problems later, "and mind you", this unit is not even 2 years old yet and has been one problem child after another, finally the "coil" went bad in it and Lennox ended up telling me that the coil was on backorder and may not receive the part in over 6 months!!! Absolutely unacceptable. To top it off, this company is rude, offensive, unprofessional, do absolutely nothing to compensate, or even try to help you, no sympathy or understanding for the inconveniencing they cause and I could give them a hundred choice words how low and scum they truly are.

Don't buy Lennox. We have a unit that is 1 1/2 years old, still under warranty and the evaporator coil went out in March of 2026. Lennox is telling us that the new coil wont be available until August of 2026. They build junk and can't even fix it when it breaks. I called their consumer support and they mentioned getting a window unit in the meantime!

Updated on 05/06/2026: I wrote Lennox a letter to describe the problems we had with a Lennox air conditioner coil that was leaking in an elbow, as I expected, Lennox did not respond. After spending $1,800 due to coil problems prior to an installation of a new coil, that was under warranty. but. the installation cost of the new coil was an additional $770. Come on Lennox, respond!!

We purchased a Lennox air conditioner for our home last year. The unit itself has been excellent. However, the 3M Filtrete filters we've been using are a tight fit. We're using the correct size indicated by Lennox. But the cardboard frame is thick enough to require literally squeezing to the point of cutting our fingers before we can slide the filter into the tray underneath the air handler. We called Lennox customer support and found them distinctly unsupportive. After almost an hour on the phone (time we'll never get back!), my wife and were stunned by the answer to our query (as to whether they might suggest an alternative filter). Their answer? No. Will we recommend Lennox to family and friends after this experience? No.

Buyer beware. We had a unit installed last summer and have had over 10 tech visits for half as many issues. It’s a lemon. I called Lennox and had the rudest customer service agent I have ever spoken with tell me it wasn’t Lennox’s problem because they didn’t install it. The unit is terrible and the poor installation company had to be bleeding money on this terrible brand of air HVAC units. CA lemon lawyers to the rescue!

The kitchen HVAC unit installed in the CFA Moscow, Idaho store has not worked for over a month. Kitchen staff is getting sick from overheating. Lennox would not work with local contractors to remedy the situation. Then, when they did go out to fix it, they sent the wrong board for it. More waiting while the store suffers from faulty product. Thousands and thousands of dollars in paper weights on the roof. Useless customer service.

On March 9th, 2026 White Mechanical installed a new Lennox furnace for us. We were offered an electrostatic air filter option with the Costco purchase, but we declined that expensive option. The installation proceeded as expected and the installer did a very clean and professional job. However, we asked the installer to demonstrate how to replace the air filter, we were dismayed at the complexity of the replacement. We must remove the outside cover, then using a special tool, remove the interior cover to access the filter. Then, making sure we do not disturb any of the loose wires nearby, we then remove the filter hold-down bracket with the special tool and swap filters. Then carefully replace all the parts & panels in reverse order until restored.

I had a Lennox installed in Spring, 2015, on the advice of my A/C company. I was not informed nor did I have any knowledge whatsoever about the coil issue which Lennox was already litigating. My coil has failed and I must either spend a significant amount to replace with a legitimate coil or replace the unit which is now 11 years old. My unit should have a 15 to 20 year lifespan but only lasted 11 years. Apparently the class action closed or was soon closing at the time I had my unit installed and I was not informed by Lennox.

I only give this Lennox unit one star because I had to make a choice. My XC20 was installed in Sept 2020 AT A COST OF $20865, including new gas furnace! Annual A/C and furnace inspections performed by installation company. Latest inspection noted a drop in line pressure which was discovered to be caused by a leaking coil. Lennox knew of the leaking coils (see class action lawsuit) yet continued to install these faulty coil after 2015. My coil was covered under warranty but needed to be replaced by a box coil which would not fit into the current housing the faulty coil was in.

Heat pump wiring fried and shorted out by insulation rubbing on heat pump chassis. The unit is two years old and Lennox covered $0 of the $700 repair. Lennox digs in their heels and comes back with boiler plate responses. The CEO makes >$10M per year and is not willing to stand behind his products.

I highly regarded Lennox regarding our 2 HVACs installed around 2011 maybe later. We have had issues with the fancy thermostats and now an inverter board I’m told needs replacement. The cost is outrageous, and as a retired senior I’ve had enough. We will never buy another Lennox product. The high tech products don’t last and apparently costly. I felt the need to post my feelings and warn others.

Lennox systems offers an $1800 rebate on qualifying system which includes heat pump, air handler, and thermostat. The system was installed by their distributor who said my system was eligible for the $1800 rebate. The rebate is a lie and they are dishonest. I am very sorry that I had a Lennox system installed. The company lies.