Lennox Reviews 

purchased 6mths ago a new ML14KP1-042-230A01 and the coil needed to be replaced unit was installed buy Lennox authorized dealer in Florida

Scott at Lennox tech-support has major knowledge with S 40 set up regarding zoning big help thank you Scott!
-Jordan with air design

As a reminder to anyone buying a new home be sure to register your air handler, condensor, heat pump, etc. separately. Don't just register one piece of equipment. You must register each and every piece. If you do not register within 60 days you will have no 3 year labor and 7 year parts warranty. I would bet that 95% of people do not know this fact and new home builders and/or installers might not tell you. Who likes warranty work? If you were told consider yourself lucky. This is just my opinion. Do your own research!

One last point, Lennox Consumer Affairs said this to me via email, "Unfortunately, we cannot control what information the builder or the installing contractor provides consumers." Wow...that is so wrong.

In 2023 I purchased a 100K BTU 90-95 AFUE Gas Furnace. It cost me over $12,000.

Just recently I had a technician inform me that the circuit board blew out. The unit is rarely used as I live in Southern California. It is less than 2 years old.

The part was covered under warranty, however the labor cost about $850.

I called Lennox Consumer Affairs to see if they can assist me with some of the labor cost since the unit was faulty. The represented said there is nothing that they can do.

Item is poorly made; I would avoid purchasing any of their products as they do not support customers.

Horrible horrible horrible, they need to get their customer service and tech support under control, I've had a customer with a failing control board for weeks now and you're either on hold for hours and never get through or they tell you to call back later and no callback option for you, the new boards they've update for the ELUH don't work and I can't get through to anyone to get a resolution. Absolutely ridiculous.

Awful customer service. I am a gasfitter/contractor and couldnt get tech support without being registered. Everytime I called they were 'experiencing high call volume'. No call back option, you just have to waste more of your time. I tell me customers to avoid Lennox at all costs. Also, parts are outrageously over priced.

I bought 2 Lennox air conditioners, a 4 ton and a 5 ton unit for a newly purchased homebecause I was told they were the best companies. I wanted very good units for this expensive home. One day after installation, the first unit broke and was making noise. It was a poorly installed motor bracket which had to be replaced. The next day the second AC unit broke. I It was not cooling. The unit had adefective heating strip that was staying on inappropriately. My AC installers disconnected it and we had to wait weeks for parts. When I got my FPL bill, my FPL bill was $50 extra for those 3 days the unit was running with a faulty heat strip. I had to pay FPL $150 extra for those 3 days because of a defect in the machine which took weeks in the Florida summer to repair. I called up Lennox, who have really poor customer service and keep you waiting forever, and complained and asked to be reimbursed for the extra $150 their brand new unit had cost me in power bills for 3 days. They said they wouldn't reimburse me even thought it was their defective machine which caused me to have to pay $150 extra. Two brand new Lennox units each broke within 24 hours of installation. No one in Lennox seems to care. They had no sympathy or empathy. They could't care the least about both of their new AC units breaking on day 2 nor about their customers or customer satisfaction. . All they seem to want to do is deny problems and any claim. I would never buy Lennox again because of their products breaking and because of really horrible customer service and caring of the company about their customers and feedback.

We bought a top of the line HVAC system that worked great for a couple of years. When we had a problem and needed it fixed, Lennox told us that our warranty was no good because we hadn’t paid them to service it yearly. We had it serviced by another company but the Lennox tech said they didn’t do a very good job so no warranty coverage. This is a scam and I will report it to the BBB. Caveat emptor!

We bought a new home in 2019, with a new Lennox HVAC. The builder installed this unit KNOWING it was too small for our size home. So this is also on them. After 4-5 years it started not cooling as expected. We live in Central Arizona but our temperatures don’t get as high as Phoenix, thank God for that. Still it is dry on the attic where the unit is located. When it totally failed after numerous attempts to fix leaks, add Freon it cost us over two years 2k to keep it going. We finally gave up. Well they just removed the unit today and it was totally rusted out from the inside! They had copper coils right next to galvanized straps. Electrolysis was going on big time. We have no roof leaks, you could see where it was leaking from the copper. This piece of crap a/c of course is not longer available (wonder why!!!???) so could not get parts! 5 year old unit!! I would NEVER EVER buy another Lennox A/C. It is an over priced undependable product. Look elsewhere. We did, for a lot less than Lennox garbage. Run away for Lennox.

Worst company in terms of service and customer service on HVAC units....includes coil/Furnace etc...

I am happy with carrier products and service very reliable from consumer perspective but pathetic service by lennox..stay away from lennox products...

I purchased an ECM Lennox heater 10 years ago (final install inspection: 4/2). The blower motor failed on 5/11—just 1 month and 9 days after the 10-year warranty expired. When I contacted Lennox customer support, I hoped they’d make an exception given how close it was to the warranty period, as a sign of standing behind their product. Instead, I was told no exceptions are made—period.

To escalate the issue, I was transferred to another queue. After waiting 5 minutes, the call disconnected. I called back, waited another 5 minutes, and was disconnected again. No callback, no resolution, just wasted time.

This experience speaks volumes: Lennox doesn’t value customer loyalty or product longevity. For a premium brand, the refusal to offer even minimal goodwill—paired with abysmal service—is unacceptable. Combined with the suspicious timing of the failure (right after warranty expiration), it’s hard not to feel the product was engineered for planned obsolescence.

A 10-year warranty equals 3,650 days of promised coverage. My unit failed just 39 days past that—a mere 1% over the cutoff. Yet Lennox wouldn’t budge, treating it like a decade-old debt come due. I will no longer purchase Lennox products or recommend them to others. If you’re considering this brand, factor in their rigid policies and lack of post-warranty support. There are better options out there.

Had to purchase a new circuit board after 14 months, apparently the old version of the circuit board had issues so they came out with an updated version. And of course the warranty expires after 12 months. Gave them multiple opportunities to assist as the quality of parts I’ve received from them fail just after the warranty. They did nothing, asked to speak with a manager, told me there’s no reason to escalate. I asked if an unhappy customer was not a reason to escalate? No response. Unwilling to help even in the slightest. Will never use Lennox again. The large corporations just showing how they don’t care about customers. Too bad

Absolutely useless support. Tried to call about a newly installed Lennox $ 12,000 HVAC system that cycles on and off in under 2 min, to ask if there was an adjustment that could correct it. She just kept saying call the installer, which I had already done twice & paid for service calls that did nothing. Still don't know if it's a faulty new Honeywell 9000 thermostat or the Lennox unit. Both deny it is their problem. I will never touch Lennox again.

We live in Northern Maine and have been deeply disappointed with Lennox’s customer service. Since there are only a couple of service providers for the entire state, they seem to treat customers as if they’re "precious" and indispensable. When we called to ask a simple question about our system or inquire about ordering a part, they flat-out refused to help unless we provided the name of our repair technician. They wouldn’t offer any information or assistance.

The lack of care and refusal to provide basic support was shocking. We’re now seriously considering replacing our furnace entirely just to avoid dealing with Lennox ever again. After sharing our experience with some neighbors, they’ve decided to steer clear of Lennox as well.

If you're considering their products, avoid at all costs—the customer service is not worth the hassle.

Absolute garbage company. I would give Lennox 0 stars if I could.

I own the top of the line Lennox modular furnace. I live in Northern Ontario where it is COLD!!! Last night the temperature was -22. With the wind chill it was -32 degrees

The furnace is a little over 10 years old and if the course the warranty just expired. The furnace stopped working on January 08/25 so I called in the technician to repair the furnace. Supposedly a circuit board needed to be replaced at a cost of $800.00.

The part was ordered and now I’m told it will not arrive until January13/25. Seriously!!! A furnace is not a luxury in Northern Ontario it’s a frickin necessity.

When I was researching furnaces I was warned about Lennox furnaces and their terrible customer service. I should have listened. Now I’m out buying heaters to put throughout the house to avoid being frozen out.

Do yourself a favour AVOID any Lennox products because there is no such thing as customer service. If the furnace breaks and it will; you will not have heat in your house for quite sometime.

M 30 thermostat
M 30 thermostat has many good features and the advanced settings are easily followed. I especially like the programming for individual days, and the performance report. With the performance report I am able to calculate the fuel that I use in the oil furnace. Also the away setting is very handy just to be leaving for a while.
I do have a complaint though; this is the most and inaccurate temperature thermostat I have ever used. The only time that it is accurate is when it's off and not doing anything. Room temperature and thermostat temperature are 5° off.
Let say we come home and need Air-conditioning mode, if its 80° room temperature and you turn the air conditioning on to 72°. About 20 min. the thermostat will say it at 72° and turn off THE compressor but the room temperature says it's only 76.5 or 77 degrees. The offset in advance settings does not help this either. As a matter fact after trying every offset and every advance setting to see whether I can get this thermostat to at least be acceptable, we just set it to 68 degree when it start again. Like I said before the only time that it's accurate with room temperature is when it's off.
Now let talk about heat! Heat always over shoots the setting by 4 degrees. Setting the offset does not correct the problem. The M30 is set at 71 degrees heat but room temperature is 75 degrees and when you use the offset to try to correct high room temperature, then it does not come on when it gets cold (68 degrees) in the room.. Your installer booklet with set up info does not really tell you how to set the offset. Also the settings are not concurrent between summer, winter or spring/fall.
Please don’t tell me to contact my installer as there have been other problem with this new duel fuel system and it appears I know more about these thermostats and this HVAC install than they do. Just for your reference this is the 3RD thermostat that they traded out.

Bought an item what I was assured would fit in my car, needless to say it was totally incompatible, asked for a refund as it is promised up to 90 days, I returned the item to them, now they are playing silly games, I followed their instructions to the mark, I feel they are not going to give me my refund, i strongly suggest you do not use this company, total rip off

We bought a new furnace in 2021. 2.5 years later the blower motor broke (yes we regularly changed the filter). While we are covered for parts warranty, it is over $1,000 of labour to replace it. My last furnace was 30 years old before we had to put any money into it. Very disappointed in the quality.

We built in new home in late 2021 in Fort Myers Fl. 18 months after we moved in, we started having nothing but issues with our Lenox Air Conditioner. The drain line continued to get clogged. We purchased a service agreement for twice a year cleaning. 2 months after the first cleaning the drain clogged. We were then told we needed a monthly clean. Now 2 1/2 years later, the Air conditioner stopped working. We were told the main coil is leaking and needs replaced - cost $2650.00 parts only. Lenox will cover the cost of the part, we must pay labor. Our friend 5 doors down from us, also built a new home 3 months older than ours, last month his coil failed and cost around the same amount to replace it, same hvac contractor very prominent in FL. Called Lenox they will only cover the cost of the part, not labor. I see in 2015 a class action law suit against Lenox for a similar coil issue. Lenox - once was a quality company, now produces junk at best - not only my opinion - confirmed by many hvac contractors who no longer install's Lenox brand Equipment. Why anyone would use Lenox is puzzling. Today 9/30/24 I tried calling Lenox Customer Affairs Department all day - Lines were busy, unexpected high call volume... I see why..... Finally talked to an agent, no solution other than denial of faulty products - they pay parts only -period. Beware before you buy Lenox. We are building a new house in Ohio, Rest assure Lenox Products will not be installed or the other many private labels they have as a cover up - Ducane, Armstrong Air, Concord etc....

Top dollar, bottom performance. The nightmare begins when no normal HVAC tech can fix this because it needs special parts you can only get through one of the few licensed Lennox dealers. That means waiting two weeks for the part to come in (yes, no heat in winter for two weeks and no ac in summer for two weeks waiting for parts...I've have both). Even with twice a year servicing to keep it running I'v had to replace the mother board, the thermostat (and you can only use a $2000 Lennox brand not one you can buy in a store) and other stuff that went wrong in undere 10 years. Warranty or not who wants to freeze or boil for two weeks waiting for repair. That's enough....