What is the SEER2 rating of the Lennox EL18KSLV-024-230A?

The Lennox EL18KSLV-024-230A is rated at up to 18.5 SEER2 and 12.3 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 205 certified matchups SEER2 ranges from 15.2-18.5.

Is the Lennox EL18KSLV-024-230A good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 23,400 BTU/h at 5°F with a COP of 1.85, so it is still 1.9 times as efficient as electric resistance heat at that temperature.

How much does the Lennox EL18KSLV-024-230A cost to run per year?

At its rated efficiency it costs about $608-$1,538 a year in electricity in large U.S. cities, depending on climate and local rates - for example $738 in Phoenix and $1,275 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Which indoor units work with the Lennox EL18KSLV-024-230A?

ENERGY STAR lists 205 certified combinations for this outdoor unit. The highest-rated ones use CBK47UHET-030-230-, CBK45UHVT-024-230-, CBK48MVT-030-230-.

2-ton central heat pump · Elite EL18KSLV Series

Lennox EL18KSLV-024-230A

Very good cooling and heating efficiency for a 2-ton central heat pump, and certified for cold climates.

Ranks #91 of 331 2 ton central heat pumps for cooling efficiency, and costs about $652 a year to run in a mixed climate like Atlanta.

SEER2: 18.5 Cooling efficiency over a season
Very good · beats 77%
HSPF2: 10.0 Heating efficiency over a season
Very good · beats 84%
EER2: 12.3 Cooling efficiency on a 95°F day
Very good · beats 76%
Heat at 5°F: 23,400 BTU/h92% of its 47°F output
Below average · beats 12%

A good fit if…

You want low cooling bills - its SEER2 beats 77% of central heat pumps.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 23,400 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 84% of central heat pumps.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Nothing stands out - its ratings have no weak spot for its class.

Calculate my running cost

Details

Specifications2 ton, R-454B

General
Brand	Lennox
Outdoor unit model	EL18KSLV-024-230A
Series	Elite EL18KSLV Series
Type	Central heat pump
Nominal size	2 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	October 29, 2024
Last certified	September 3, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.5 (range 15.2-18.5)
EER2Efficiency at 95°F outdoors	11.0-12.3
Cooling capacity	23,200-24,200 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.5-10.0
Capacity at 47°F	23,800-24,800 BTU/h
Capacity at 17°F	18,000-20,200 BTU/h
Capacity at 5°F	20,000-23,400 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.75-1.85
ENERGY STAR cold climate	Yes

Heating output as it gets colder92% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with CBK47UHET-030-230- at the standard test temperatures, in BTU/h:

Certified matchups205 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 205 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unit	Furnace	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
CBK47UHET-030-230- · cold climate	-	18.5	12.3	9.8	22,000	216705370
CBK45UHVT-024-230- · cold climate	-	18.0	11.7	10.0	23,000	216581388
CBK48MVT-030-230- · cold climate	-	18.0	12.0	9.5	22,600	216618907
CBK43UHET-030-DV- · cold climate	-	17.9	11.8	9.9	22,600	218636319
CBK43UHET-018-DV- · cold climate	-	17.9	11.9	9.9	22,600	218636317
CK40HT-30A-**+TDR · cold climate	EL280UH045E36A*	17.9	12.0	9.5	20,600	217189767
CBK43UHET-024-DV- · cold climate	-	17.8	11.8	9.9	22,600	218636318
CK40[C,U]T-36A-**+TDR · cold climate	EL280UH045E36A*	17.8	12.0	9.4	20,600	217189733
CK40[C,U]T-36B-**+TDR · cold climate	ML296UH045XV36B*	17.8	12.0	9.4	20,600	217449769
CK40[C,U]T-36B-**+TDR · cold climate	SL297UH040NV36B*	17.8	12.0	9.0	20,600	216769568
CK40[C,U]T-36B-**+TDR · cold climate	SL280UH090V36B*	17.8	12.0	9.0	20,600	217449757
CK40HT-30A-**+TDR · cold climate	ML180UH030V36A*	17.7	12.0	9.5	20,600	217449797
CK40HT-24B-**+TDR · cold climate	ML296UH045XV36B*	17.7	12.0	9.0	20,800	217449793
CK40HT-30B-**+TDR · cold climate	ML296UH045XV36B*	17.7	12.0	9.0	20,800	217449812
CK40HT-24B-**+TDR · cold climate	SL297UH040NV36B*	17.7	12.0	9.0	20,800	216769572
CK40HT-30B-**+TDR · cold climate	SL297UH040NV36B*	17.7	12.0	9.0	20,800	216769576
CK40HT-24B-**+TDR · cold climate	SL280UH090V36B*	17.7	12.0	9.0	20,800	217449781
CK40HT-24B-**+TDR · cold climate	ML296UH070XV36B*	17.7	12.0	9.0	20,800	217449794
CK40[C,U]T-36B-**+TDR · cold climate	ML296UH070XV36B*	17.7	12.0	9.0	20,600	217449770
CK40HT-30B-**+TDR · cold climate	SL280UH090V36B*	17.7	12.0	9.0	20,800	217449800
CK40HT-30A-**+TDR · cold climate	EL180UH040NE36A*	17.6	11.7	9.5	20,800	217189763
CK40HT-30A-**+TDR · cold climate	EL180UH060NE36A*	17.6	11.7	9.5	21,000	217189764
CK40HT-30B-**+TDR · cold climate	ML296UH070XV36B*	17.6	12.0	9.0	20,800	217449813
CK40[C,U]T-36A-**+TDR · cold climate	ML180UH030V36A*	17.6	12.0	9.0	20,600	217449754
CK40HT-30A-**+TDR · cold climate	ML180UH070V36A*	17.6	12.0	9.5	20,600	217449799
CBK45UHET-024-230- · cold climate	-	17.5	12.0	9.5	23,000	216618903
CBK45UHET-030-230- · cold climate	-	17.5	12.0	9.4	23,200	216618904
CBK45UHVT-030-230- · cold climate	-	17.5	12.0	9.4	23,200	216618905
CBK45UHVT-018-230- · cold climate	-	17.5	11.7	9.4	23,400	216618901
CK40[C,U]T-36B-**+TDR · cold climate	SLP99UH070XV36B*	17.5	12.0	9.0	20,600	217189739
CK40[C,U]T-30B-**+TDR · cold climate	SL297UH040NV36B*	17.5	11.7	9.0	20,800	216769564
CK40[C,U]T-36B-**+TDR · cold climate	EL297UH070XV36B*	17.5	12.0	9.0	20,600	216769571
CK40HT-24B-**+TDR · cold climate	EL297UH070XV36B*	17.5	12.0	9.0	20,800	216769575
CK40[C,U]T-30A-**+TDR · cold climate	EL280UH045E36A*	17.5	12.0	9.0	20,600	217189716
CK40[C,U]T-36A-**+TDR · cold climate	EL180UH040NE36A*	17.5	11.7	9.0	20,800	217189729
CK40[C,U]T-36A-**+TDR · cold climate	EL180UH060NE36A*	17.5	11.7	9.0	20,800	217189730
CK40HT-24B-**+TDR · cold climate	SLP99UH070XV36B*	17.5	12.0	9.0	20,800	217189756
CK40HT-24B-**+TDR · cold climate	ML297UH070XV36B*	17.5	12.0	9.0	20,800	218730753
CK40[C,U]T-36B-**+TDR · cold climate	ML297UH070XV36B*	17.5	12.0	9.0	20,600	218730751
CK40HT-30A-**+TDR · cold climate	ML180UH045E36A*	17.4	11.7	9.5	20,800	217189769
CK40HT-30A-**+TDR · cold climate	ML180UH045XE36A*	17.4	11.7	9.5	20,800	217189770
CK40HT-30A-**+TDR · cold climate	ML180UH045V36A*	17.4	12.0	9.5	20,600	217449798
CK40HT-30B-**+TDR · cold climate	EL297UH070XV36B*	17.4	12.0	9.0	20,800	216769579
CK40HT-24A-**+TDR · cold climate	EL280UH045E36A*	17.4	11.7	9.0	21,000	217189750
CK40HT-30B-**+TDR · cold climate	SLP99UH070XV36B*	17.4	12.0	9.0	20,800	217189773
CK40HT-30B-**+TDR · cold climate	ML196UH030XE36B*	17.4	11.7	9.0	21,000	217449808
CK40[C,U]T-30B-**+TDR · cold climate	SL280UH090V36B*	17.4	12.0	9.0	20,800	217449738
CK40[C,U]T-30B-**+TDR · cold climate	ML296UH045XV36B*	17.4	12.0	9.0	20,800	217449750
CK40[C,U]T-36A-**+TDR · cold climate	ML180UH070V36A*	17.4	12.0	9.0	20,600	217449756
CK40HT-30B-**+TDR · cold climate	ML297UH070XV36B*	17.4	12.0	9.0	20,800	218730755
CK40HT-30A-**+TDR · cold climate	SL280UH060NV36A*	17.4	12.0	9.5	20,800	217189762
CK40[C,U]T-36B-**+TDR · cold climate	SL297UH060NV36B*	17.4	12.0	9.0	20,600	216769569
CK40HT-24B-**+TDR · cold climate	ML193UH070XE36B*	17.4	11.7	9.0	21,000	217449792
CK40[C,U]T-30B-**+TDR · cold climate	ML296UH070XV36B*	17.4	11.7	9.0	20,800	217449751
CK40[C,U]T-36B-**+TDR · cold climate	EL297UH045XV36B*	17.3	12.0	9.0	20,800	216769570
CK40HT-24B-**+TDR · cold climate	EL297UH045XV36B*	17.3	11.7	9.0	20,800	216769574
CK40HT-24B-**+TDR · cold climate	SL297UH060NV36B*	17.3	12.0	9.0	20,800	216769573
CK40HT-24B-**+TDR · cold climate	ML180UH070V36B*	17.3	12.0	9.0	21,000	217449783
CK40HT-30B-**+TDR · cold climate	ML193UH070XE36B*	17.3	11.7	9.0	21,000	217449811
CK40[C,U]T-36B-**+TDR · cold climate	ML193UH070XE36B*	17.3	12.0	9.0	20,800	217449768

Yearly running cost in 10 large cities$608-$1,538

Phoenix, AZ$738/yr
Miami, FL$608/yr
Houston, TX$661/yr
Atlanta, GA$652/yr
Los Angeles, CA$631/yr
New York, NY$1,538/yr
Chicago, IL$1,245/yr
Denver, CO$1,032/yr
Seattle, WA$631/yr
Minneapolis, MN$1,275/yr

At each state's average electricity price and the city's typical heating and cooling hours.

Questions5

What is the SEER2 rating of the Lennox EL18KSLV-024-230A?: The Lennox EL18KSLV-024-230A is rated at up to 18.5 SEER2 and 12.3 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 205 certified matchups SEER2 ranges from 15.2-18.5.
Is the Lennox EL18KSLV-024-230A good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 23,400 BTU/h at 5°F with a COP of 1.85, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
How much does the Lennox EL18KSLV-024-230A cost to run per year?: At its rated efficiency it costs about $608-$1,538 a year in electricity in large U.S. cities, depending on climate and local rates - for example $738 in Phoenix and $1,275 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Which indoor units work with the Lennox EL18KSLV-024-230A?: ENERGY STAR lists 205 certified combinations for this outdoor unit. The highest-rated ones use CBK47UHET-030-230-, CBK45UHVT-024-230-, CBK48MVT-030-230-.
What refrigerant does the Lennox EL18KSLV-024-230A use?: It uses R-454B.

Running cost and savings

Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

Heat pump $725/yrYou save $512/yrSee details ↓

1. Where you live

StateCityElectricity ¢ per kWh

Adjust heating and cooling hours

Filled in from your city's climate. Change them if you run the system much more or less than usual.

Cooling hours full-load hours per yearHeating hours full-load hours per year

2. The heat pump Lennox EL18KSLV-024-230A

Find a model (fills in the ratings below)

SEER2 cooling efficiencyHSPF2 heating efficiencyCooling capacity BTU/hHeating capacity BTU/h

3. What it replaces

Current heatingFurnace efficiency (AFUE %)Gas price, $/thermCurrent coolingOld AC rating SEER2 (10 ≈ 15+ years old)

4. Price replace the example with your quote

Installed price, $Rebates and incentives, $ utility, state

Heat pump, per year: $725
Current system, per year: $1,238
You save per year: $512
Payback: 17.6 years
Net after 10 years: -$3,879

Cooling $457Heating $269Electricity used: 4,534 kWhSaved vs. a minimum-efficiency heat pump: $224

Estimates use the unit's rated SEER2 and HSPF2, full-load hours derived from NOAA 1991-2020 degree days, average residential electricity prices from the U.S. EIA (12 months to July 2026) and fuel prices from EIA (2025 for natural gas, week of 2026-10-05 for propane and heating oil). Very cold days that need backup heat are not modelled. Federal minimum for comparison: 14.3 SEER2 / 7.5 HSPF2.

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Midea MDV-V24WMN10T(B) · cold climate18.5 SEER2 · 10.0 HSPF2
Concord 7SCP18V24P-**A · cold climate18.5 SEER2 · 10.0 HSPF2
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UTL UCHA-24HDCSN4 · cold climate18.5 SEER2 · 9.5 HSPF2

See all 331 2 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 3, 2026. How we use the data.