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Side-by-side financial comparison of Lennox International (LII) and WATTS WATER TECHNOLOGIES INC (WTS). Click either name above to swap in a different company.

Lennox International is the larger business by last-quarter revenue ($1.2B vs $625.1M, roughly 1.9× WATTS WATER TECHNOLOGIES INC). Lennox International runs the higher net margin — 13.6% vs 13.4%, a 0.2% gap on every dollar of revenue. On growth, WATTS WATER TECHNOLOGIES INC posted the faster year-over-year revenue change (15.7% vs -11.2%). Lennox International produced more free cash flow last quarter ($376.7M vs $140.3M). Over the past eight quarters, Lennox International's revenue compounded faster (6.8% CAGR vs 4.6%).

Lennox International Inc. is an American provider of climate control products for the heating, ventilation, and air conditioning (HVAC) and refrigeration markets. Based in Richardson, Texas, the company is 9.8% owned by John W. Norris, III, a descendant of DW Norris, who acquired the company in 1904. The company's largest production facilities are in Saltillo, Mexico, Marshalltown, Iowa, and Orangeburg, South Carolina.

AERCO International, Inc. is a manufacturer and supplier of commercial condensing boilers, high efficiency water heating equipment and energy recovery systems in the HVAC/plumbing industry across a variety of markets including education, lodging, government, office buildings, healthcare, industrial and multifamily housing. In 1949, AERCO introduced the industry's first semi-instantaneous, tankless steam-to-water water heater. In 1988, AERCO introduced the first condensing and fully modulating...

LII vs WTS — Head-to-Head

Bigger by revenue
LII
LII
1.9× larger
LII
$1.2B
$625.1M
WTS
Growing faster (revenue YoY)
WTS
WTS
+26.8% gap
WTS
15.7%
-11.2%
LII
Higher net margin
LII
LII
0.2% more per $
LII
13.6%
13.4%
WTS
More free cash flow
LII
LII
$236.4M more FCF
LII
$376.7M
$140.3M
WTS
Faster 2-yr revenue CAGR
LII
LII
Annualised
LII
6.8%
4.6%
WTS

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
LII
LII
WTS
WTS
Revenue
$1.2B
$625.1M
Net Profit
$162.1M
$83.7M
Gross Margin
34.7%
49.5%
Operating Margin
18.6%
18.2%
Net Margin
13.6%
13.4%
Revenue YoY
-11.2%
15.7%
Net Profit YoY
-18.0%
24.0%
EPS (diluted)
$4.62
$2.50

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
LII
LII
WTS
WTS
Q4 25
$1.2B
$625.1M
Q3 25
$1.4B
$611.7M
Q2 25
$1.5B
$643.7M
Q1 25
$1.1B
$558.0M
Q4 24
$1.3B
$540.4M
Q3 24
$1.5B
$543.6M
Q2 24
$1.5B
$597.3M
Q1 24
$1.0B
$570.9M
Net Profit
LII
LII
WTS
WTS
Q4 25
$162.1M
$83.7M
Q3 25
$245.8M
$82.2M
Q2 25
$277.6M
$100.9M
Q1 25
$120.3M
$74.0M
Q4 24
$197.7M
$67.5M
Q3 24
$239.0M
$69.1M
Q2 24
$245.9M
$82.0M
Q1 24
$124.3M
$72.6M
Gross Margin
LII
LII
WTS
WTS
Q4 25
34.7%
49.5%
Q3 25
32.8%
48.8%
Q2 25
34.8%
50.6%
Q1 25
30.6%
48.8%
Q4 24
33.9%
46.7%
Q3 24
32.6%
47.3%
Q2 24
33.6%
47.7%
Q1 24
32.5%
46.9%
Operating Margin
LII
LII
WTS
WTS
Q4 25
18.6%
18.2%
Q3 25
21.7%
18.2%
Q2 25
23.6%
21.0%
Q1 25
14.5%
15.7%
Q4 24
18.2%
16.5%
Q3 24
20.2%
17.1%
Q2 24
22.1%
18.7%
Q1 24
15.9%
16.9%
Net Margin
LII
LII
WTS
WTS
Q4 25
13.6%
13.4%
Q3 25
17.2%
13.4%
Q2 25
18.5%
15.7%
Q1 25
11.2%
13.3%
Q4 24
14.7%
12.5%
Q3 24
16.0%
12.7%
Q2 24
16.9%
13.7%
Q1 24
11.9%
12.7%
EPS (diluted)
LII
LII
WTS
WTS
Q4 25
$4.62
$2.50
Q3 25
$6.98
$2.45
Q2 25
$7.82
$3.01
Q1 25
$3.37
$2.21
Q4 24
$5.52
$2.02
Q3 24
$6.68
$2.06
Q2 24
$6.87
$2.44
Q1 24
$3.47
$2.17

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
LII
LII
WTS
WTS
Cash + ST InvestmentsLiquidity on hand
$34.7M
$405.5M
Total DebtLower is stronger
$1.1B
Stockholders' EquityBook value
$1.2B
$2.0B
Total Assets
$4.1B
$2.9B
Debt / EquityLower = less leverage
0.98×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
LII
LII
WTS
WTS
Q4 25
$34.7M
$405.5M
Q3 25
$59.2M
$457.7M
Q2 25
$55.1M
$369.3M
Q1 25
$222.9M
$336.8M
Q4 24
$422.3M
$386.9M
Q3 24
$255.7M
$303.9M
Q2 24
$57.8M
$279.4M
Q1 24
$57.6M
$237.1M
Total Debt
LII
LII
WTS
WTS
Q4 25
$1.1B
Q3 25
$838.2M
Q2 25
$835.7M
Q1 25
$834.2M
Q4 24
$833.1M
Q3 24
$827.6M
Q2 24
$1.1B
Q1 24
$1.2B
Stockholders' Equity
LII
LII
WTS
WTS
Q4 25
$1.2B
$2.0B
Q3 25
$1.1B
$2.0B
Q2 25
$900.5M
$1.9B
Q1 25
$852.5M
$1.8B
Q4 24
$850.2M
$1.7B
Q3 24
$754.0M
$1.7B
Q2 24
$577.4M
$1.6B
Q1 24
$368.8M
$1.6B
Total Assets
LII
LII
WTS
WTS
Q4 25
$4.1B
$2.9B
Q3 25
$3.5B
$2.7B
Q2 25
$3.7B
$2.6B
Q1 25
$3.5B
$2.5B
Q4 24
$3.5B
$2.4B
Q3 24
$3.3B
$2.4B
Q2 24
$3.2B
$2.4B
Q1 24
$3.0B
$2.3B
Debt / Equity
LII
LII
WTS
WTS
Q4 25
0.98×
Q3 25
0.78×
Q2 25
0.93×
Q1 25
0.98×
Q4 24
0.98×
Q3 24
1.10×
Q2 24
1.95×
Q1 24
3.13×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
LII
LII
WTS
WTS
Operating Cash FlowLast quarter
$405.9M
$154.7M
Free Cash FlowOCF − Capex
$376.7M
$140.3M
FCF MarginFCF / Revenue
31.5%
22.4%
Capex IntensityCapex / Revenue
2.4%
2.3%
Cash ConversionOCF / Net Profit
2.50×
1.85×
TTM Free Cash FlowTrailing 4 quarters
$638.8M
$356.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
LII
LII
WTS
WTS
Q4 25
$405.9M
$154.7M
Q3 25
$300.7M
$122.4M
Q2 25
$86.8M
$69.7M
Q1 25
$-35.8M
$55.2M
Q4 24
$332.4M
$139.5M
Q3 24
$452.1M
$90.7M
Q2 24
$184.0M
$85.3M
Q1 24
$-22.8M
$45.6M
Free Cash Flow
LII
LII
WTS
WTS
Q4 25
$376.7M
$140.3M
Q3 25
$265.1M
$110.9M
Q2 25
$58.3M
$59.5M
Q1 25
$-61.3M
$45.6M
Q4 24
$272.2M
$127.5M
Q3 24
$410.9M
$84.3M
Q2 24
$151.3M
$78.5M
Q1 24
$-52.3M
$35.5M
FCF Margin
LII
LII
WTS
WTS
Q4 25
31.5%
22.4%
Q3 25
18.6%
18.1%
Q2 25
3.9%
9.2%
Q1 25
-5.7%
8.2%
Q4 24
20.2%
23.6%
Q3 24
27.4%
15.5%
Q2 24
10.4%
13.1%
Q1 24
-5.0%
6.2%
Capex Intensity
LII
LII
WTS
WTS
Q4 25
2.4%
2.3%
Q3 25
2.5%
1.9%
Q2 25
1.9%
1.6%
Q1 25
2.4%
1.7%
Q4 24
4.5%
2.2%
Q3 24
2.8%
1.2%
Q2 24
2.3%
1.1%
Q1 24
2.8%
1.8%
Cash Conversion
LII
LII
WTS
WTS
Q4 25
2.50×
1.85×
Q3 25
1.22×
1.49×
Q2 25
0.31×
0.69×
Q1 25
-0.30×
0.75×
Q4 24
1.68×
2.07×
Q3 24
1.89×
1.31×
Q2 24
0.75×
1.04×
Q1 24
-0.18×
0.63×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

LII
LII

Residential Heating And Cooling$699.8M59%
Commercial Heating And Cooling$495.2M41%

WTS
WTS

Segment breakdown not available.

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