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LENNOX SLP98V Furnace


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Overview of the SLP98V

The Lennox SLP98V is a gas variable-capacity furnace currently manufactured by the company. It can achieve an efficiency rating of up to 98.2 percent, which Lennox claims can save the customer more than $800 each year compared to basic units. The SLP98V comes equipped with a self-calibrating variable speed inducer and a stainless steel secondary heat exchanger. It has dual-fuel capability, meaning it can be paired with a heat pump to provide increased comfort and efficiency. The variable-speed motor and advanced sound absorbing materials provide quiet performance. This furnace has been recognized as one of the Most Efficient of Energy Star furnaces for 2014, which means it is both extremely efficient and prevents greenhouse gas emissions. When paired with an iComfort Wi-Fi thermostat, the SLP98V provides advanced scheduling and remote access via laptop, smartphone or tablet.

Furnace Filters for the LENNOX SLP98V

Air Flow Configuration Cabinet Width Filters
Upflow / Horizontal All 1 16x25x1 filter
(side air return)
1 16x25x1 filter
(bottom air return)
Ask a Question about your LENNOX SLP98V
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Recent Questions

Consumer Reviews of the LENNOX SLP98V

Popularity:
#7  of 21 Lennox Furnaces
3 of 5 stars 19 reviews

  • Very Satisfied
    8
  • Somewhat Satisfied
    1
  • Neutral
    0
  • Somewhat Unsatisfied
    1
  • Very Unsatisfied
    9

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Date created: 2015-03-06 Name: irene
Location: Richmond Hill, Ontario

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"Not reliable"
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 savings on the high efficiency furnace compared to my old 20-year-old standard that had never been repaired. It's true. On the positive side: it is quieter.


Date created: 2015-02-22 Name: irene
Location: Richmond Hill, Ontario

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"Not reliable"
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 Name: D. Poole
Location: Surrey, BC

Satisfaction Rating:

2 of 5 stars Somewhat Unsatisfied

Review:
"Not reliable"
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 Name: Eugenia Hopfer
Location: Freeport, MN

Satisfaction Rating:

5 of 5 stars Very Satisfied

Review:
"SLP98UH SERIES,VAR.CAP.GAS.FURN"
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 Name: Stephan S.
Location: Toronto, Canada

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"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!


Date created: 2014-02-05 Name: Vahid
Location: Grand Blanc, Michigan

Satisfaction Rating:

5 of 5 stars Very Satisfied

Review:
"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 Name: P. Vanzandt
Location: Leesburg, VA

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"Unreliable"
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 Name: Paul Wilson
Location: Winnipeg Canada

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"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 Name: R. Krom
Location: Erie, PA.

Satisfaction Rating:

5 of 5 stars Very Satisfied

Review:
"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 Name: D. Max
Location: Norhern Michigan

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"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 purchase.


Date created: 2013-09-27 Name: J Cislo
Location: Anchorage Alaska

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"SLP98DF070V36B"
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 a malfunction.


Date created: 2013-06-16 Name: Didier lecoce
Location: LONGMONT COLORADO

Satisfaction Rating:

5 of 5 stars Very Satisfied

Review:
"Lennox Dealer"
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 Name: Chris J
Location: Birmingham, AL

Satisfaction Rating:

5 of 5 stars Very Satisfied

Review:
"Excellent Furnace!"
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.


Date created: 2013-05-11 Name: Mark Jackson
Location: Winnipeg, Mb, Can

Satisfaction Rating:

5 of 5 stars Very Satisfied

Review:
"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 Name: Ted
Location: Ontario, Canada

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"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 Name: D. Walker
Location: Scarborough Ontario

Satisfaction Rating:

5 of 5 stars Very Satisfied

Review:
"Lennox Furnace"
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 Location: Binghamon, NY

Satisfaction Rating:

4 of 5 stars Somewhat Satisfied

Review:
"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 Name: M Nelson
Location: Surrey BC
Years owned: 1

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

Review:
"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 Name: DERRICK SCHMIDT

Satisfaction Rating:

5 of 5 stars Very Satisfied

Review:
"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.


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Other SLP98V Reviews

A consumer consults hvac-talk.com about choosing between a Lennox SLP98V, a Coleman unit and a Rheem furnace. He has received quotes on each of these furnaces. One contractor recommends the Rheem product; the other comments seem favorable toward the Lennox furnace based on the ease of servicing, small footprint and positive feedback from customers.

A homeowner asks for comparison between an Amana furnace and the Lennox SLP98V, as he is considering which one to install. An expert replies that Lennox is a more reliable brand, in his experience, and bases his recommendation upon that.

Another question is posed about the Lennox SLP98V on justanswer.com. An HVAC expert discusses that it is a modulating furnace, which is more expensive than a regular furnace but generally provides more comfort. The expert feels that Rheem offers a superior modulating furnace, but there are no negatives associated with the Lennox product. Overall, the feedback on the forums seems to relate that the Lennox SLP98V is a worthwhile furnace to own.

LENNOX SLP98V Model Numbers

The SLP98V is available in different models which vary in efficiency and capacity.

Model Number AFUE BTUs per Hour
SLP98DF070V36B-* 97.5 66,000
SLP98DF090V36C-* 97.5 88,000
SLP98DF090V48C-* 97.5 88,000
SLP98DF090V60C-* 97.5 88,000
SLP98DF110V60C-* 98.2 110,000
SLP98UH070V36B-* 97 66,000
SLP98UH090V36C-* 98 88,000
SLP98UH090V48C-* 97.5 88,000
SLP98UH090V60C-* 98.2 88,000
SLP98UH110V60C-* 97.5 110,000

SLP98V Warranty

Lennox provides a lifetime limited warranty on the heat exchanger of the Lennox SLP98V. Parts are covered by a 10-year limited warranty. An extended warranty is also available for purchase at the time of installation.

 
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