What is the current annual gross margin of LII?

As of today, LII annual gross margin is 33.39%

What is 1-year change in LII annual gross margin?

LII annual gross margin is up +0.66% year-over-year

What is 3-year change in LII annual gross margin?

LII annual gross margin is up +23.35% over the past 3 years

How far is LII annual gross margin from its all-time high?

LII annual gross margin is currently -0.15% below its historical high of 33.44% set on December 31, 2004

How does LII annual gross margin rank versus sector peers?

LII annual gross margin is higher than 69.90% of companies in Industrials sector

When is LII next annual earnings release?

The next annual earnings release for LII is on February 3, 2027

What is the current quarterly gross margin of LII?

As of today, LII quarterly gross margin is 31.62%

What is LII quarterly gross margin most recent change?

LII quarterly gross margin was down -9.42% on September 30, 2026

What is 1-year change in LII quarterly gross margin?

LII quarterly gross margin is down -3.71% year-over-year

How far is LII quarterly gross margin from its all-time high?

LII quarterly gross margin is currently -63.96% below its historical high of 87.74% set on June 30, 2001

How does LII quarterly gross margin rank versus sector peers?

LII quarterly gross margin is higher than 62.35% of companies in Industrials sector

When is LII next earnings release?

The next earnings release for LII is on February 3, 2027

LII Gross Margin History & Chart Since 1997

Annual Gross Margin

33.39%0.22%+0.66%

December 31, 2025

Summary

Current Value: As of today, LII annual gross margin is 33.39%, up +0.66% on December 31, 2025
Historical Performance: LII annual gross margin is up +23.35% over the past 3 years, up +16.50% over the past 5 years
All-Time High Comparison: LII annual gross margin is currently -0.15% below its historical high of 33.44% set on December 31, 2004
3-Year Low Comparison: LII annual gross margin is +23.35% above its 3-year low of 27.07% reached on an earlier date
Sector Comparison: LII annual gross margin is higher than 69.90% of companies in Industrials sector

Gross Margin Chart

beforeafter

Performance

LII Performance
Metric	Date	Value	1Y	3Y	5Y	15Y
Annual Gross Margin	Dec 31, 25	33.39%	+0.7%	+23.4%	+16.5%	+17.4%
Quarterly Gross Margin	Sep 30, 26	31.62%	-3.7%	+0.8%	+13.7%	+27.9%
Price	Nov 6, 26	$341.97	-30.4%	-11.2%	+13.2%	+928.5%
PE Ratio	Nov 6, 26	15.87	-21.2%	-37.5%	-31.6%	-11.7%
Annual Revenue	Dec 31, 25	$5.20B	-2.7%	+10.1%	+43.0%	+67.8%
Annual Gross Profit	Dec 31, 25	$1.73B	-2.1%	+35.8%	+66.6%	+97.0%
Annual Operating Margin	Dec 31, 25	20.28%	+4.0%	+47.2%	+51.8%	+218.4%
Annual Net Margin	Dec 31, 25	15.51%	+2.6%	+47.1%	+57.8%	+310.3%

Gross Margin Highs

LII Annual Gross Margin Highs Comparison
Period	High	Date	Current
3Y	33.39%	Dec 31, 25	at high
5Y	33.39%	Dec 31, 25	at high
All	33.44%	Dec 31, 04	-0.1%

Gross Margin Lows

LII Annual Gross Margin Lows Comparison
Period	Low	Date	Current
3Y	27.07%	N/A	+23.4%
5Y	27.07%	Dec 31, 22	+23.4%
All	24.69%	Dec 31, 12	+35.2%

Gross Margin History

Year	Value	Change
2025	33.39%	+0.7%
2024	33.17%	+6.8%
2023	31.07%	+14.8%
2022	27.07%	-4.2%
2021	28.27%	-1.4%
2020	28.66%	+1.0%
2019	28.39%	-0.0%
2018	28.40%	-1.5%
2017	28.84%	-3.4%
2016	29.85%	+8.0%
2015	27.65%	+2.6%
2014	26.94%	-0.4%
2013	27.05%	+9.6%
2012	24.69%	-0.7%
2011	24.87%	-12.6%

Year	Value	Change
2010	28.44%	-0.4%
2009	28.55%	+2.1%
2008	27.96%	-0.4%
2007	28.07%	-10.8%
2006	31.47%	-4.4%
2005	32.92%	-1.6%
2004	33.44%	+1.4%
2003	32.97%	+4.8%
2002	31.45%	+5.5%
2001	29.80%	-7.0%
2000	32.04%	+1.6%
1999	31.52%	-0.3%
1998	31.63%	+4.2%
1997	30.36%	-

FAQ

What is the current annual gross margin of LII?: As of today, LII annual gross margin is 33.39%
What is 1-year change in LII annual gross margin?: LII annual gross margin is up +0.66% year-over-year
What is 3-year change in LII annual gross margin?: LII annual gross margin is up +23.35% over the past 3 years
How far is LII annual gross margin from its all-time high?: LII annual gross margin is currently -0.15% below its historical high of 33.44% set on December 31, 2004
How does LII annual gross margin rank versus sector peers?: LII annual gross margin is higher than 69.90% of companies in Industrials sector
When is LII next annual earnings release?: The next annual earnings release for LII is on February 3, 2027

Gross Margin Formula

Gross Margin = Gross Profit

Revenue × 100%

Quarterly Gross Margin

31.62%3.29%-9.42%

September 30, 2026

Summary

Current Value: As of today, LII quarterly gross margin is 31.62%, down -9.42% on September 30, 2026
Historical Performance: LII quarterly gross margin is down -3.71% year-over-year, up +0.83% over the past 3 years
All-Time High Comparison: LII quarterly gross margin is currently -63.96% below its historical high of 87.74% set on June 30, 2001
3-Year Low Comparison: LII quarterly gross margin is +2.93% above its 3-year low of 30.72% reached on December 31, 2023
Sector Comparison: LII quarterly gross margin is higher than 62.35% of companies in Industrials sector

Performance

LII Performance
Metric	Date	Value	3M	1Y	3Y	5Y
Quarterly Gross Margin	Sep 30, 26	31.62%	-9.4%	-3.7%	+0.8%	+13.7%
Annual Gross Margin	Dec 31, 25	33.39%	–	+0.7%	+23.4%	+16.5%
Price	Nov 6, 26	$341.97	-21.5%	-30.4%	-11.2%	+13.2%
PE Ratio	Nov 6, 26	15.87	-18.0%	-21.2%	-37.5%	-31.6%
Quarterly Revenue	Sep 30, 26	$1.57B	+1.8%	+10.2%	+15.1%	+48.4%
Quarterly Gross Profit	Sep 30, 26	$497.20M	-7.8%	+6.1%	+16.0%	+68.6%
Quarterly Operating Margin	Sep 30, 26	20.34%	-11.8%	-5.5%	+11.3%	+34.2%
Quarterly Net Margin	Sep 30, 26	14.07%	-19.2%	-18.3%	+47.5%	+18.0%

Quarterly Gross Margin Highs

LII Quarterly Gross Margin Highs Comparison
Period	High	Date	Current
1Y	34.91%	Jun 30, 26	-9.4%
3Y	34.91%	Jun 30, 26	-9.4%
5Y	34.91%	Jun 30, 26	-9.4%
All	87.74%	Jun 30, 01	-64.0%

Quarterly Gross Margin Lows

LII Quarterly Gross Margin Lows Comparison
Period	Low	Date	Current
1Y	30.95%	Mar 31, 26	+2.2%
3Y	30.72%	Dec 31, 23	+2.9%
5Y	25.96%	Dec 31, 22	+21.8%
All	22.93%	Mar 31, 20	+37.9%

Quarterly Gross Margin History

Month	Value	Change
Sep 2026	31.62%	-9.4%
Jun 2026	34.91%	+12.8%
Mar 2026	30.95%	-5.0%
Dec 2025	32.58%	-0.8%
Sep 2025	32.84%	-4.8%
Jun 2025	34.48%	+8.5%
Mar 2025	31.78%	-7.3%
Dec 2024	34.27%	+5.1%
Sep 2024	32.60%	-3.1%
Jun 2024	33.64%	+3.6%
Mar 2024	32.47%	+5.7%
Dec 2023	30.72%	-2.0%
Sep 2023	31.36%	-2.3%
Jun 2023	32.10%	+10.7%
Mar 2023	28.99%	+11.7%
Dec 2022	25.96%	-2.4%
Sep 2022	26.60%	-8.2%
Jun 2022	28.99%	+9.6%
Mar 2022	26.46%	+1.1%
Dec 2021	26.16%	-6.0%
Sep 2021	27.82%	-9.9%
Jun 2021	30.86%	+12.2%
Mar 2021	27.50%	-9.7%
Dec 2020	30.44%	-0.6%
Sep 2020	30.62%	+5.0%
Jun 2020	29.17%	+27.2%
Mar 2020	22.93%	-17.0%
Dec 2019	27.63%	-4.8%
Sep 2019	29.02%	-4.2%
Jun 2019	30.28%	+17.3%
Mar 2019	25.81%	-3.2%
Dec 2018	26.66%	-8.9%
Sep 2018	29.26%	-4.0%
Jun 2018	30.47%	+16.5%
Mar 2018	26.15%	-8.1%
Dec 2017	28.47%	-3.2%
Sep 2017	29.41%	-4.0%
Jun 2017	30.63%	+17.6%
Mar 2017	26.04%	-12.4%
Dec 2016	29.73%	-4.0%
Sep 2016	30.96%	-0.7%
Jun 2016	31.19%	+18.9%
Mar 2016	26.24%	-3.8%
Dec 2015	27.29%	-5.8%
Sep 2015	28.96%	+0.4%
Jun 2015	28.84%	+18.9%
Mar 2015	24.26%	-12.5%
Dec 2014	27.73%	+0.4%
Sep 2014	27.62%	-0.0%
Jun 2014	27.63%	+13.6%
Mar 2014	24.33%	-12.6%
Dec 2013	27.84%	+0.9%
Sep 2013	27.59%	-1.4%
Jun 2013	27.99%	+15.8%
Mar 2013	24.18%	-1.8%
Dec 2012	24.62%	-3.8%

Month	Value	Change
Sep 2012	25.58%	-4.6%
Jun 2012	26.80%	+9.2%
Mar 2012	24.55%	-2.6%
Dec 2011	25.20%	+1.9%
Sep 2011	24.72%	-4.6%
Jun 2011	25.92%	+11.4%
Mar 2011	23.26%	-19.4%
Dec 2010	28.87%	+0.9%
Sep 2010	28.62%	-4.0%
Jun 2010	29.80%	+12.0%
Mar 2010	26.61%	-4.8%
Dec 2009	27.96%	-6.1%
Sep 2009	29.77%	+2.8%
Jun 2009	28.96%	+21.9%
Mar 2009	23.75%	-13.5%
Dec 2008	27.45%	-4.9%
Sep 2008	28.87%	+0.8%
Jun 2008	28.65%	+8.4%
Mar 2008	26.44%	-11.6%
Dec 2007	29.92%	+4.9%
Sep 2007	28.51%	+2.7%
Jun 2007	27.75%	+7.4%
Mar 2007	25.85%	-16.9%
Dec 2006	31.10%	+0.7%
Sep 2006	30.88%	-2.0%
Jun 2006	31.52%	-0.5%
Mar 2006	31.69%	-3.4%
Dec 2005	32.81%	-3.5%
Sep 2005	34.01%	+0.4%
Jun 2005	33.88%	+7.0%
Mar 2005	31.67%	-1.4%
Dec 2004	32.11%	-4.1%
Sep 2004	33.48%	-2.0%
Jun 2004	34.18%	+0.6%
Mar 2004	33.98%	+4.3%
Dec 2003	32.58%	-1.6%
Sep 2003	33.10%	-2.5%
Jun 2003	33.96%	+3.8%
Mar 2003	32.71%	+9.7%
Dec 2002	29.81%	-4.7%
Sep 2002	31.28%	-4.1%
Jun 2002	32.63%	+5.6%
Mar 2002	30.91%	+13.0%
Dec 2001	27.35%	-10.2%
Sep 2001	30.44%	-65.3%
Jun 2001	87.74%	+194.1%
Mar 2001	29.83%	-2.9%
Dec 2000	30.71%	-3.9%
Sep 2000	31.95%	-4.2%
Jun 2000	33.36%	+4.4%
Mar 2000	31.94%	+0.7%
Dec 1999	31.71%	-0.1%
Sep 1999	31.75%	+0.9%
Jun 1999	31.48%	+1.6%
Mar 1999	30.99%	-

FAQ

What is the current quarterly gross margin of LII?: As of today, LII quarterly gross margin is 31.62%
What is LII quarterly gross margin most recent change?: LII quarterly gross margin was down -9.42% on September 30, 2026
What is 1-year change in LII quarterly gross margin?: LII quarterly gross margin is down -3.71% year-over-year
How far is LII quarterly gross margin from its all-time high?: LII quarterly gross margin is currently -63.96% below its historical high of 87.74% set on June 30, 2001
How does LII quarterly gross margin rank versus sector peers?: LII quarterly gross margin is higher than 62.35% of companies in Industrials sector
When is LII next earnings release?: The next earnings release for LII is on February 3, 2027

Gross Margin Formula

Gross Margin = Gross Profit

Revenue × 100%

Data Sources & References

LII Official Website www.lennox.com
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/1069202/000106920226000005/0001069202-26-000005-index.htm
LII Profile on Yahoo Finance finance.yahoo.com/quote/LII
LII Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/lii