Lennox Reviews

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.