What is the SEER2 rating of the Lennox EL17XP1-036-230A?

The Lennox EL17XP1-036-230A is rated at up to 16.8 SEER2 and 13.5 EER2 for cooling and up to 8.7 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 570 certified matchups SEER2 ranges from 15.2-16.8.

Is the Lennox EL17XP1-036-230A good for cold climates?

It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 3-ton model.

How much does the Lennox EL17XP1-036-230A cost to run per year?

At its rated efficiency it costs about $1,004-$2,488 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,210 in Phoenix and $2,058 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 EL17XP1-036-230A?

ENERGY STAR lists 570 certified combinations for this outdoor unit. The highest-rated ones use CHX35-42C-**-*+TDR, CK40HT-42C-0*+TDR, CRX35-48C-**-*+TDR.

What refrigerant does the Lennox EL17XP1-036-230A use?

It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

3-ton central heat pump · ELITE EL17XP1 Series

Lennox EL17XP1-036-230A

Average cooling and heating efficiency for a 3-ton central heat pump, but not rated for cold climates.

Ranks #180 of 302 3 ton central heat pumps for cooling efficiency, and costs about $1,060 a year to run in a mixed climate like Atlanta.

SEER2: 16.8 Cooling efficiency over a season
Average · beats 45%
HSPF2: 8.7 Heating efficiency over a season
Average · beats 47%
EER2: 13.5 Cooling efficiency on a 95°F day
Excellent · beats 95%
Heat at 5°F: 19,300 BTU/h54% of its 47°F output
Excellent · beats 93%

A good fit if…

You want a choice of indoor units - 570 certified pairings.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
You want the newest refrigerant - it uses R-410A, which is being phased down.
Comfort and noise matter - a single-stage compressor runs only full-on or off.

Calculate my running cost

Details

Specifications3 ton, R-410A

General
Brand	Lennox
Outdoor unit model	EL17XP1-036-230A
Series	ELITE EL17XP1 Series
Type	Central heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	January 6, 2022
Last certified	October 27, 2025
Cooling
SEER2Seasonal efficiency, higher is better	16.8 (range 15.2-16.8)
EER2Efficiency at 95°F outdoors	12.2-13.5
Cooling capacity	34,800-36,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.7
Capacity at 47°F	32,400-36,000 BTU/h
Capacity at 17°F	21,400-24,000 BTU/h
Capacity at 5°F	16,800-19,300 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.06-2.36
ENERGY STAR cold climate	No

Heating output as it gets colder54% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with CHX35-42C-**-*+TDR at the standard test temperatures, in BTU/h:

Certified matchups570 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 570 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.
CHX35-42C-*-+TDR	EL280UH110E48C*	16.8	13.5	8.0	17,600	211001773
CK40HT-42C-0*+TDR	EL280UH110E48C*	16.8	13.5	8.0	17,600	214622448
CRX35-48C-*-+TDR	ML180DF110E60C*	16.6	13.0	8.7	18,800	213257799
CK40DT-48C-0*+TDR	ML180DF110E60C*	16.6	13.0	8.7	18,800	214622593
CHX35-42C-*-+TDR	ML180UH110V60C*	16.6	13.5	8.1	18,200	211001785
CHX35-42C-*-+TDR	ML296UH110XV60C*	16.6	13.5	8.1	18,100	211001795
CHX35-42C-*-+TDR	SL280UH080NV60C*	16.6	13.5	8.1	18,000	211001796
CHX35-42C-*-+TDR	SL280UH100NV60C*	16.6	13.5	8.1	18,400	211001799
CHX35-42C-*-+TDR	EL280UH110XE60C*	16.6	13.5	8.1	18,100	211001775
CHX35-42C-*-+TDR	EL280UH110E60C*	16.6	13.5	8.1	18,100	211001774
CHX35-51/61C-*-+TDR	EL280UH110E60C*	16.6	13.5	8.1	17,500	210293556
CHX35-51/61C-*-+TDR	SL280UH080NV60C*	16.6	13.5	8.1	17,700	210293578
CHX35-51/61C-*-+TDR	ML180UH110V60C*	16.6	13.5	8.1	17,700	210293567
CHX35-51/61C-*-+TDR	EL280UH110XE60C*	16.6	13.5	8.1	17,500	210293557
CK40HT-42C-0*+TDR	EL280UH110E60C*	16.6	13.5	8.1	18,100	214622449
CK40HT-42C-0*+TDR	EL280UH110XE60C*	16.6	13.5	8.1	18,100	214622450
CK40HT-42C-0*+TDR	ML180UH110V60C*	16.6	13.5	8.1	18,200	214622460
CK40HT-42C-0*+TDR	ML296UH110XV60C*	16.6	13.5	8.1	18,100	214622470
CK40HT-42C-0*+TDR	SL280UH080NV60C*	16.6	13.5	8.1	18,000	214622471
CK40HT-42C-0*+TDR	SL280UH100NV60C*	16.6	13.5	8.1	18,400	214622474
CK40HT-51/61C-0*+TDR	EL280UH110XE60C*	16.6	13.5	8.1	17,500	214622523
CK40HT-51/61C-0*+TDR	EL280UH110E60C*	16.6	13.5	8.1	17,500	214622522
CK40HT-51/61C-0*+TDR	ML180UH110V60C*	16.6	13.5	8.1	17,700	214622533
CK40HT-51/61C-0*+TDR	SL280UH080NV60C*	16.6	13.5	8.1	17,700	214622544
CHX35-51/61C-*-+TDR	ML180UH090E60C*	16.6	13.5	8.0	17,400	210293565
CHX35-51/61C-*-+TDR	EL280UH110E48C*	16.6	13.5	8.0	17,100	210293555
CHX35-51/61C-*-+TDR	ML296UH110XV60C*	16.6	13.0	8.0	17,500	210293577
CHX35-42C-*-+TDR	EL196UH110XE60C*	16.6	13.5	8.0	17,800	211001772
CHX35-42C-*-+TDR	ML193UH110XE48C*	16.6	13.5	8.0	17,900	211001788
CHX35-42C-*-+TDR	ML196UH110XE60C*	16.6	13.5	8.0	17,800	211001793
CK40HT-42C-0*+TDR	EL196UH110XE60C*	16.6	13.5	8.0	17,800	214622447
CK40HT-42C-0*+TDR	ML193UH110XE48C*	16.6	13.5	8.0	17,900	214622463
CK40HT-42C-0*+TDR	ML196UH110XE60C*	16.6	13.5	8.0	17,800	214622468
CK40HT-51/61C-0*+TDR	EL280UH110E48C*	16.6	13.5	8.0	17,100	214622521
CK40HT-51/61C-0*+TDR	ML180UH090E60C*	16.6	13.5	8.0	17,400	214622531
CK40HT-51/61C-0*+TDR	ML296UH110XV60C*	16.6	13.0	8.0	17,500	214622543
CX35-36B+TDR	ML180UH090E48B*	16.6	13.5	7.8	16,800	210293654
C35-36B+TDR+TXV	ML180UH090E48B*	16.6	13.5	7.8	16,800	210293389
CK40CT-36B-0*+TDR	ML180UH090E48B*	16.6	13.5	7.8	16,800	214622636
CRX35-48C-*-+TDR	SL280DF110V60C*	16.4	13.0	8.7	19,100	213257806
CK40DT-48C-0*+TDR	SL280DF110V60C*	16.4	13.0	8.7	19,100	214622600
CHX35-42C-*-+TDR	ML180UH110E60C*	16.4	13.5	8.1	18,000	211001784
CHX35-42B-*-+TDR	ML180UH090E48B*	16.4	13.0	8.1	18,300	211001752
CHX35-42B-*-+TDR	SL280UH080NV48B*	16.4	13.5	8.1	18,400	211001762
CHX35-51/61C-*-+TDR	ML180UH110E60C*	16.4	13.0	8.1	17,400	210293566
CHX35-51/61C-*-+TDR	SL280UH100NV60C*	16.4	13.0	8.1	17,800	210293581
CK40HT-42B-0*+TDR	ML180UH090E48B*	16.4	13.0	8.1	18,300	214622426
CK40HT-42B-0*+TDR	SL280UH080NV48B*	16.4	13.5	8.1	18,400	214622436
CK40HT-42C-0*+TDR	ML180UH110E60C*	16.4	13.5	8.1	18,000	214622459
CK40HT-51/61C-0*+TDR	ML180UH110E60C*	16.4	13.0	8.1	17,400	214622532
CK40HT-51/61C-0*+TDR	SL280UH100NV60C*	16.4	13.0	8.1	17,800	214622547
C35-50/60C+TDR+TXV	SL280UH080NV60C*	16.4	13.0	8.0	17,200	210293433
C35-50/60C+TDR+TXV	ML180UH110V60C*	16.4	13.0	8.0	17,200	210293422
C35-36B+TDR+TXV	SL280UH080NV48B*	16.4	13.0	8.0	17,000	210293399
CX35-36B+TDR	SL280UH080NV48B*	16.4	13.0	8.0	17,000	210293664
CX35-50/60C+TDR	SL280UH080NV60C*	16.4	13.0	8.0	17,200	210293698
CHX35-51/61C-*-+TDR	ML196UH110XE60C*	16.4	13.0	8.0	17,500	210293575
CHX35-51/61C-*-+TDR	ML196UH090XE60C*	16.4	13.0	8.0	17,300	210293574
CX35-50/60C+TDR	ML180UH110V60C*	16.4	13.0	8.0	17,200	210293687
CHX35-51/61C-*-+TDR	EL196UH110XE60C*	16.4	13.0	8.0	17,500	210293554

Yearly running cost in 10 large cities$1,004-$2,488

Phoenix, AZ$1,210/yr
Miami, FL$1,004/yr
Houston, TX$1,084/yr
Atlanta, GA$1,060/yr
Los Angeles, CA$1,023/yr
New York, NY$2,488/yr
Chicago, IL$2,011/yr
Denver, CO$1,665/yr
Seattle, WA$1,018/yr
Minneapolis, MN$2,058/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 EL17XP1-036-230A?: The Lennox EL17XP1-036-230A is rated at up to 16.8 SEER2 and 13.5 EER2 for cooling and up to 8.7 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 570 certified matchups SEER2 ranges from 15.2-16.8.
Is the Lennox EL17XP1-036-230A good for cold climates?: It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 3-ton model.
How much does the Lennox EL17XP1-036-230A cost to run per year?: At its rated efficiency it costs about $1,004-$2,488 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,210 in Phoenix and $2,058 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 EL17XP1-036-230A?: ENERGY STAR lists 570 certified combinations for this outdoor unit. The highest-rated ones use CHX35-42C-**-*+TDR, CK40HT-42C-0*+TDR, CRX35-48C-**-*+TDR.
What refrigerant does the Lennox EL17XP1-036-230A use?: It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

Running cost and savings

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

Heat pump $1,187/yrYou save $630/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 EL17XP1-036-230A

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: $1,187
Current system, per year: $1,817
You save per year: $630
Payback: 21.4 years
Net after 10 years: -$7,199

Cooling $754Heating $433Electricity used: 7,418 kWhSaved vs. a minimum-efficiency heat pump: $201

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.

Similar 3 ton models

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Concord 4HP17L36P-**A16.8 SEER2 · 8.7 HSPF2
Carrier 37MURAQ36AA3 · cold climate16.7 SEER2 · 9.3 HSPF2
Comfort-Aire HRG1536S1R-**A16.8 SEER2 · 8.7 HSPF2
Day & Night D5CURAH36AAK · cold climate16.7 SEER2 · 9.3 HSPF2
Blueridge BHP17L36P-**A16.8 SEER2 · 8.7 HSPF2
DuraSTAR DRU1U36S2A · cold climate16.7 SEER2 · 9.3 HSPF2
Armstrong Air 4SHP17LE136P-**A16.8 SEER2 · 8.7 HSPF2

See all 302 3 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of October 27, 2025. How we use the data.