Date created: 2019-05-03
We purchased the Lennox SLP98 in October 2013. The system did not
function properly ran at extremely high speed and was very noisy.
Lennox dealer tried several recommendations that Lennox made. The
territory rep came to our home to help diagnose the problem. Several
things were tried including making a larger hole is sidewall of the house
for a larger PVC exhaust pipe. That did not fix the problem. In the end,
that furnace was replaced with a new one. The original furnace was taken
to the lab for diagnosis and we understand they could make no
determination of the problems. Last month we discovered our carpet on
other side of a wall of the furnace was wet. After a couple of days decided it
must be coming from the furnace. Called dealer that installed the unit and
upon his checking unit, he found a screw in the cold end header box that
had corroded and rusted and was allowing the water from condensation to
leak below inside furnace. This had to have been going for a loooong
time because the inside of our furnace is rusted beyond words. At this
point, Lennox is saying if we did not have annual maintenance there is no
warranty. Really??? Who calls a repairman when thereís nothing wrong and
donít need to pay for a service call, just because. We were never told
that we need, must, should have an annual checkup on the unit. Why??
What was happening in the furnace is not visible, just like a plumbing
leak behind a wall that you canít see until it becomes a bigger problem.
We are very upset with the situation and only wish reviews on this had
been available when we purchased ours, but this model was a recent
release at that time. We have read other reviews with problems with the
header box, but have not yet seen similar ones to our problem. We will
post our issue on as many places as we can to get the word out. Lennox
will find every way to not have to back their product. We thought Lennox
was a reputable brand and thus purchased their product, never imagining
we would find ourselves in this position. The 10-year warranty has no
value. If you are looking to replace your home HVAC system do not
consider Lennox as many reviews indicate many problems with this model
and others. We only wish we could upload pictures of all the rusted
components inside the furnace. We truly donít know if the system works
properly. We sure have not seen the energy savings results that were a
Date created: 2019-01-15
We installed a new Lennox furnace in the fall of 2018. The unit is very
quiet, gets heat to all areas of the house and is more efficient than
our old single stage furnace. We love that you don't hear the furnace
coming on and going off. It just quietly keeps the house at a
Date created: 2019-01-11
Chronic problems and horrid service
Purchased this unit (most expensive high efficiency they sell) January
2015. Within a month we began getting error code 292 about every 6-8
weeks. This error is presumably reported failed blower motor, but, the
blower motor is actually ok, so it is a design glitch of some sort. This
error turns off the system requiring a power off and on to reset it.
This has now gone on for the last 3.5 years, and the dealer has replaced
the motor, several different sensors and probes, and logic board. None
of this has fixed the problem. I have included photos of the most recent
two occurrences to prove my point. I finally went to Lennox customer
service. They wrote to me and asked for all the records for verification, I
sent these. However, they then passed it to their local technical rep.
He emailed me once with a phone number, but when you call that number
you get an "out of service" message. He also has not responded to three
subsequent emails. I have now written back to Lennox, and they are not
replying to my emails. In addition to this chronic and unresolved
problem, the unit has also had several other component failures, a
pressure switch and refrigerant loss, all within three years of the
install. Lesson: Lennox products should be avoided because they are
unreliable, and when service is needed they run you in circles and
eventually ignore you. I plan to file a complaint with the consumer
protection agency but am also writing reviews on as many sites as I can
to warn potential customers. Stay away from Lennox!!!
Overland Park, KS
Date created: 2018-11-15
Furnace did not perform as expected.
Lennox SLP98 98% furnace replaced a Lennox Elite 80% furnace with
exhaust through the roof. The new Lennox is now 8 months old at
the time of this writing. Neighbor complains about gas odor coming from the furnace exhaust on the side of our house. Gas company came and found high levels of carbon monoxide (500 - 600 ppm) at the exhaust each time the furnace was starting up. An HVAC dealer came and verified the high levels of carbon monoxide 500 - 100 ppm in exhaust pipe 2 feet from furnace at startup. Another dealer said that it was normal for Lennox Signature SLP98 furnace to have high levels of carbon monoxide (500 - 1300 ppm) in exhaust at startup. We did inform the Gas company that these high levels were normal for the Lennox Signature furnace, so they could inform everyone at the gas company. After 5 minutes of running the furnace, the carbon monoxide levels off to around 28 ppm. I would not have bought this furnace if I would have known about the high carbon monoxide levels coming out of the exhaust at the side of the house at ground level. After the furnace was installed, we kept the thermostat temperature settings the same as before. With weather being similar in previous years, our gas and electric bills have greatly increased with this new furnace during the heating season. Bottom line is, this furnace is way too expensive and does not perform as advertised. Do your research and buy a different brand or model.
Date created: 2017-01-15
Pressure switch fails every year
This unit was purchased to replace an old Lennox Pulse furnace which was
very reliable but noisy. The new furnace failed the first time when it
was just one year old. The pressure switch was the problem and the
pressure switch has failed every winter. Each time was on a weekend and
the technician couldn't get the part until Monday leaving us without
heat for a couple of days. When the furnace works it is very nice but
the reliability is totally unacceptable.
Date created: 2016-12-02
Cheap Furnace, ridiculous parts price
So Lennox sells cheap furnaces, then they charge you twice or 3 times
the amount for parts when it needs maintenance or repair. Go on their
website for your local dealer and you'll find no phone contact
number. You have to have an account with Lennox and they only give
accounts to HVAC companies, which means they have strict control of
their parts and will charge you to death. My furnace repair
technician said every customer he had with Lennox furnaces hates it
and will never buy it again.
Date created: 2016-05-10
I've had my furnace for roughly 3 years now. The furnace is a lot more efficient than my old one. A lot smaller. And it is quieter. It feels a lot more comfortable heating my home and maintaining a certain temperature. I've never had to repair it, just basic maintenance. Yes I would buy another Lennox furnace and refer one to a friend.
Date created: 2016-04-14
Lennox blower inadequate for house
Purchased a Lennox furnace despite bad reviews on this site. I read the
reviews, thought "Well, they're talking about radiator & heating-oil
type furnaces, not gas-heated forced-air furnaces, so Lennox will
probably be all right..."
Huge mistake! We've only had the furnace for 3 weeks, in spring weather. The blower fails to circulate air in tri-level house. The temperature at the thermostat (ground level) reads within parameters, so the basement freezes while the upstairs roasts - & the blower fails to function when we attempt to start it manually. If/when it does run, it doesn't even put out enough air force to push a paper tissue off of the floor heating vents!
Bitterly regretting this terrible decision - wish I'd gone with Amana instead!
Date created: 2015-11-06
I recently upgraded my furnace for the first time in 30 years
My father has had the same furnace in our family home for many, many years and it was costing him a ton to maintain in the winter. One day when the Niagara Mohawk service men were in my neighborhood updating all the meters in town, they informed him that his furnace was simply too old and sucking energy and not to mention money! I went online and tried to find a decent gas furnace. While the price was very steep, we were able to come up with a payment plan and we were told that our 3 year savings on our bills would cover almost 1/4 of the furnace cost. We haven't used it too much yet (my father doesn't like to turn on the heat until it's extremely cold outside) but we did test it out a few times! It also takes up much less space in the basement, and is nicer on the eyes. It works wonderfully and we are looking forward to staying warm and saving money this year.
Fort Worth, Tx
Date created: 2015-10-09
Lennox Gas Furnace Review
The reputation of Lennox is what initially sold me to their product. The pilot light on our old furnace kept going out, and those dangers/annoyances bother me extremely. My husband purchased the Lennox after careful review/talks with family and friends. There was not a single doubt in our mind about this purchase. We ordered it and the gentlemen who installed it were exceptional. What surprised me were the many options available to fit our schedule. Also, the furnace is so quiet and keeps a steady temperature, allowing our gas/electric bills to decrease drastically. I would recommend this to anybody looking for a new gas furnace.
Date created: 2015-10-02
On Monday, the dealer replaced a 1991-era furnace with the highest
efficiency Lennox gas heater that would fit in the 17" closet. Slightly
larger than the old unit, the installer ran into a problem with the
utility closet door and I told him, ďThat door won't keep us warm this
winter but the heater will. Do what you need." They got some lumber and
fixed the door afterwards.
I love the PVC exhaust pipe and they installed a new drain line for the condensate. That water means significant wasted heat is no longer going up the flue. We also had the non-functional evaporator removed so it is a heating-only unit. The installer put in a metal duct extension, which was a struggle in that tight space. Bought through Costco, our discount comes via a rebate to our membership card, easily 10% off.
Thursday night the temperatures are in the low 50's and the house is wonderful. This Lennox unit is quiet and the low-speed mode maintains a 'wife comfortable' temperature. As for savings, the electronic ignition solves the summer utility bill, had $10 for the pilot light.
My only concern is the air inlet is from the closet. I would have preferred an outside or attic source. But it is PVC and I can handle it like I had done with the former furnace. We also had the filter located to the hallway inlet, making it much easier to replace. With clean filters and no evaporator, this unit should easily handle what cold winds blow.
Date created: 2015-09-28
Efficient furnace from a reliable brand
I had to replace my gas furnace last November due to consistent problems with my old one's pilot light going out. After several repairman visits, they were unable to permanently fix the old one. I ended up deciding that another bargain-brand model simply wasn't worth the hassle, and went with a Lennox. Installation appeared to be relatively simple (although, I have to admit, I didn't perform the install by myself - I hired a local crew). Not only has this model performed significantly better than out outgoing furnace (no outages and, thus, no having to relight in the middle of a cold winter night), it has saved us nearly $10 per month on our gas bill since being installed (I know it doesn't sound like a lot, but that's like saving 5 quality cups of coffee per month). Efficiency and reliability are the best ways to measure the quality of a furnace. In this regard, the Lennox model we purchased aced both categories. I would certainly purchase this model again, but I doubt I'll have to anytime soon.
Date created: 2015-06-05
Lennox gas forced air furnace
In general, the SLP98V variable-capacity gas furnace has good performance, it's easy to install, it's great unit for the do-it-yourself type of person, and it is a very quiet running hot air furnace. It has plenty of forced air power and delivers plenty of heat quickly. I mostly only buy Lennox products, because the quality of the brand is familiar to me but also it is good quality. When buying a furnace, the most important things are if it works well, how pound it is and the price. So far I am impressed with all three of those things. I installed this a little over three months ago, and it's does a wonderful job. I have a rental house as well and I am going to be replacing the furnace that is over 10 years old with the Lennox model. I would recommend this furnace .
Richmond Hill, Ontario
Date created: 2015-02-22
28 months old, 3 repairs. This latest breakdown happened on the coldest
day of this winter, -26 C. It went cold turkey at around midnight. Thank
goodness for portable heaters (3 of them on hand, just in case). It was
the pressure switch. It cost $257. There goes any possible saving on a high
efficiency furnace compared to my old 20-year-old standard that had
never been repaired. True. On the positive side: it is quieter.
Date created: 2014-11-12
Our 3 year old furnace quit heating. Parkinson's Heating responded
quickly and replaced a vacuum switch. The part is under warranty but
labor is only covered for 1 year. The money you save on gas is more than
spent on the cost of the furnace and paying for repairs. We would have
been better off keeping the older, less efficient furnace. Lennox needs
to do a better job of standing behind their products.
Date created: 2014-03-14
This unit was installed in Oct. 2013, so there is not much info to go
on. It performed as expected during this winter's very cold weather. I
have not been able to determine how efficient it was compared to my old
furnace, which was 25 years old. I am hoping that with the dual-fuel
rate for electricity, that it will be more economical in the long run.
Date created: 2014-02-24
Avoid at all costs
Stay away from Lennox SLP98UH110xv60c-03 unless you want to be woken up
in winter with a high pitch noise throughout the house. Dealer checked
on it and said, everything is alright, nothing they can do. Furnace is
less than 2 years old. Very frustrated! Followed up with Lennox
directly, 2 months later, no reply. $4,000 wasted on a piece of crap!
Grand Blanc, Michigan
Date created: 2014-02-05
The best furnace ever
We have a 2,800 sq-ft two story house in Michigan. We built this house
in 1992 with a reputable builder. He installed a Carrier Weather maker
100k btu furnace 90% and a 4-tom a/C. The furnace has worked fine and
four years ago, we replaced the high temp sensor and then this x-mas the
gas valve (on Jan. 1, 2014). However, all these years our house had temp
difference of anywhere between 2 to 5 degrees between upstairs and
downstairs - hot in summers and cold in winters. Also, the furnace would
make a rather loud noise when it would kick on you could certainly hear
the blower even though I sleep upstairs, it kept waking me up in the
middle of the night. Since the unit was 22 years old and it kept making
so much noise, I decided to shop around for a new high eff furnace. I
read all of these reviews on this site and got estimates for Trane,
Carrier, Lennox, and Bryant. At the end, I went with the slp98v and xc-
18 ac with icomfort. The furnace was installed three days ago. This
furnace is simply outstanding. First, I cannot even hear it when it
turns on because of the var-speed blower - it is absolutely quiet when
in normal mode. Second, we no longer have temperature difference between
upstairs and downstairs. I am not making this up - the furnace produces
very consistent heat in every part of the house. Third, we had a central
humidifier (Honeywell) which I kept. But, the installer took out the
humidity sensor that came with Honeywell and just hooked up the wires to
the furnace since it has its own internal humidity sensor. We can
actually control the humidity from the thermostat now and I do not have
to go to the basement each time I want to change the humidity. Fourth,
the t-stat (iComfort) has tons of very useful features not to mention I
connected it to the internet and I can control it via my iphone. Fifth,
this unit is 98% efficient which in mi qualifies for close to $500
rebate from the utility company. Also, Lennox was running a special and
we will get a huge rebate for this unit. Lastly, we used Terry Allen to
purchase and install the unit and they offer 5 years labor and 2 years
free maintenance to go with the 10-year parts warranty of this unit. So
far so good and I love this unit. I will certainly let people know if
something should happen. The only minor concern is the price - but we
were looking for something high end with variable speed and
communicating system and when compared with the other units we
considered, this package came out much better.
Date created: 2014-01-30
23 month old unit stopped working during 2014 Polar Vortex. Pressure
switch failed. 5 days to get new part installed. $250 out of pocket
expense. Have read about others with same problem with this unit.
Date created: 2014-01-09
I finally pulled it out
The Lennox slp98 that I purchased 3 years ago is now pulled out and replaced with a different model.
It never worked properly from day 1. It took them at least 2 weeks to get it operating more than a hour at a time. Afterward, it would just shut-down once or twice a week for an hour or so or sometimes never come on again until a service tech got it running again.
I had two portable heaters on stand-by all the time.
The last month with a different reliable furnace has been a blessing. It can get to -40C where I live.
Date created: 2013-12-05
Dave Lennox Signature Collection Gas Furnace
This furnace gives a nice even heat. It is so quiet that you don't
realize it is on. I'm very happy that I purchased this furnace.
Date created: 2013-11-09
Howling Noise at All Fan Speeds
I have two new SLP98V just installed. They both make a quiet howling
(harmonic) noise which is much more annoying than the blowing noise
that my old Amana made.
The Amana was replaced to get the improved air purification system
and computerized thermostats with smartphone link. The other unit was
replacing an older broken furnace.
Service guys are very nice and are working with Lennox to "fix the
problem". One entire unit was replaced already, quieter but still
howling. So far, no real improvement. At high seed, the fan is as loud
or louder than my previous furnace (which wasn't that loud). There is
also a pipe tapping noise when the gas valve opens and closes.
If they can't "fix" it, I will reinstall the Amana, add an aftermarket
MERV 16 air filter and give up the cool thermostats at considerable
financial loss. Lennox does some pretty aggressive advertising about how
quiet their furnaces are but you just never know. Good luck with your
Date created: 2013-09-27
Heater continues to fail. Stopped working again after service call of
less than a month. Heater has not worked for more than 6 months without
Date created: 2013-06-16
I have installed several SLP98Vs, not a single problem with the furnace.
Our customer love it, some of them have 2 in their home. Lennox
engineering is great and they stand behind their product. They will even
have a field consultant to come and check the furnace or A/C, if there is
a problem the tech cannot find. The installation is the most critical point
of a furnace working properly. Most of the installation, we see the furnace is
over sized and the duct is too small. Every sale should be provided with a
load calculation for the home. The duct system, and the airflow should be
checked to determine how well the new system should perform.
Date created: 2013-06-13
This furnace does exactly what it says it will do. My heating bills
dropped like a rock. I never hear it run and my home stays comfortable
with even temperatures all winter.
One note to Ted who had problems with pressure switches. Check to make sure the furnace is vented correctly. The SLP98V is a direct vent furnace which means the vent pipe for both the exhaust and the intake should be the same length. Other Lennox 90+% furnace are indirect vent furnaces, meaning the intake vent does not have to run the full length. An imbalance can cause pressure switch trips, which easily could be diagnosed by a technician as a bad switch. I am a bit confused though, because you should have had a labor warranty to go with your 10 year parts warranty. Should that not have eliminated your costs? Who installed your furnace? Was installed by a Lennox Premier Dealer?
Full disclosure - I work for a Lennox Premier Dealer. I purchased and had this furnace installed in my home so my review is a personal review. That said, I have some insight to some of the issues we encountered. Mine was the first one we installed in this market.
Winnipeg, Mb, Can
Date created: 2013-05-11
Lennox is Awesome!
Most gripes seen more centered around bad service issues and
installation. SLP98V I put 1 in my home, silent operation. 100's
installed, yes bad icomforts + 1 out of 25 defective air switches.
Lennox resolved, no problems since. Unfortunate that dealers don't
bother to train their staff how to troubleshoot and install properly
that is the only major problem I see. Excellent engineering by Lennox
on these new units.
Date created: 2012-12-28
1.5 year old, Pressure switches failed, cost $400, Lennox refused to help
1.5 yr old, pressure switches failed, called Lennox, no backing of the
failed product whatsoever, read the fine print, fixing cost over
$350+half day off work - very very disappointed.
Date created: 2012-08-31
We had installed lennox slp98 high efficiency furnace for 2 years and
it's very quiet furnace, it work very good condition, save a lot of
money compare to my old Lennox Furnace. It's 98% High efficiency, and it
was top of rate on the market. We are very satisfied for Lennox Furnace
that we have been used for 30 years.
Date created: 2011-11-26
My lennox SLP98V furnace
I've owned my furnace for about six months. It's reliable, quiet, and works well for the most part. It gets pretty cold where I live so having a reliable furnace is important to myself and my other roommates. It's quite efficient and my heating bill last month was as low as it's ever been. It was reduces approximately 10% compared to our older furnace that was replaced last winter. Now that summer is here, our cooling costs have also gone down by the same 10%. It had to undergo one repair because it was not installed correctly, but this was taken care of by the people who installed it within the same week. It sometimes runs a little loudly as well, especially at night when the house is quiet. I would buy this brand again because of its great energy efficiency and overall quality, despite the few issues we had with it.
Date created: 2011-05-21
LENNOX SLP 98...IS IT 97% EFFICIENT?
I had an slp98 Lennox furnace installed in Oct 2010. It's supposed to be
Lennox's latest and greatest furnace! I was told it was 97% efficient, a
big difference form my Airco which was rated at approx 60% efficient. I
expected to see a huge difference on my gas bill and even called Teresan
(at the time) to figure out how to change my equal monthly payments!
However, I have not seen 'any' difference on my gas consumption. Even
considering our winter. I should see some savings when there is a 37%
efficiency difference, shouldn't I?? Also, what worries me even more is
that this new furnace 'booms' or has mini explosions periodically while
ramping up to speed. The installer has guaranteed me that it is not a
gas leak or seeping gas (although he has not come and to check because I
have to give him a specific time when the "booms" occur) but perhaps my
air ducts expanding!? Really??? Do you think I am an idiot and don't
know the difference between the two sounds? At this point I am not happy
with the furnace or the service I've received to attend to my concerns.
Date created: 2011-02-04
Best purchase I have ever made
I was an installer for lennox for a couple of years and I have now
totally changed careers but that is besides the point. My slp98v furnace
is the best purchase I have ever made, it runs great and never know its
even running. I am a strong believer of lennox products and lennox only
because to me they are built the best and lennox I feel is always one
step beyond everyone else. now a furnace is much like a new vehicle on
the market, if you buy something that is brand new and they havent yet
been able to work out any of the kinks in the model you may have
problems but that is a risk you must take to get quality and
reliability! Best part is if something breaks on a new model and it is
to do with a fault, it will be covered by warranty. so dont complain and
relax you people.
The SLP98V is available in different models which vary in efficiency and capacity.