What is the SEER2 rating of the York YH618E2S11?

The York YH618E2S11 is rated at up to 16.0 SEER2 and 12.0 EER2 for cooling and up to 8.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 288 certified matchups SEER2 ranges from 15.2-16.0.

Is the York YH618E2S11 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 1.5-ton model.

How much does the York YH618E2S11 cost to run per year?

At its rated efficiency it costs about $499-$1,315 a year in electricity in large U.S. cities, depending on climate and local rates - for example $613 in Phoenix and $1,097 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 York YH618E2S11?

ENERGY STAR lists 288 certified combinations for this outdoor unit. The highest-rated ones use CTM30B5ACS1, CTF24B5ABS1+JME08B2SN1, CTM30B5ACS1+JME12B2SN1.

1.5-ton central heat pump · LX SERIES

York YH618E2S11

Below average cooling and heating efficiency for a 1.5-ton central heat pump, but not rated for cold climates.

Ranks #135 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $552 a year to run in a mixed climate like Atlanta.

SEER2: 16.0 Cooling efficiency over a season
Below average · beats 26%
HSPF2: 8.0 Heating efficiency over a season
Below average · beats 12%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 9,100 BTU/h53% of its 47°F output
Excellent · beats 92%

A good fit if…

You want a choice of indoor units - 288 certified pairings.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
Cooling cost matters most - its SEER2 is below average for central heat pumps.
You mainly need heat - its HSPF2 is below average for central heat pumps.
Comfort and noise matter - a single-stage compressor runs only full-on or off.

Calculate my running cost

Details

Specifications1.5 ton, R-454B

General
Brand	York
Outdoor unit model	YH618E2S11
Series	LX SERIES
Type	Central heat pump
Nominal size	1.5 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	April 24, 2026
Last certified	July 15, 2026
Cooling
SEER2Seasonal efficiency, higher is better	16.0 (range 15.2-16.0)
EER2Efficiency at 95°F outdoors	12.0-12.5
Cooling capacity	17,000-18,300 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.0
Capacity at 47°F	16,100-17,000 BTU/h
Capacity at 17°F	10,700-11,300 BTU/h
Capacity at 5°F	8,700-9,100 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.26-2.34
ENERGY STAR cold climate	No

Heating output as it gets colder53% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with CTM30B5ACS1 at the standard test temperatures, in BTU/h:

Certified matchups288 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 288 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.
CTM30B5ACS1	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218416925
CTF24B5ABS1+JME08B2SN1	-	16.0	12.5	8.0	8,800	218416923
CTM30B5ACS1+JME12B2SN1	-	16.0	12.5	8.0	8,900	218416922
CTM24B5ABS1	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218416906
CTU30B5XCS1+TXV	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218416902
CTF30B5ACS1	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218416901
CTF24B5ABS1	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218416900
CTF24B5ABS1+JMET08BS2N1	-	16.0	12.5	8.0	8,900	218416899
CTF24B5ABS1+JMET12BS2N1	-	16.0	12.5	8.0	8,800	218416897
CTF24B5ABS1+JME12B2SN1	-	16.0	12.5	8.0	8,800	218416896
CTU30B5XCS1+JME08B2SN1+TXV	-	16.0	12.5	8.0	8,900	218416895
CTF30B5ACS1+JME08B2SN1	-	16.0	12.5	8.0	8,900	218416894
CTU30B5XCS1+JMET08BS2N1+TXV	-	16.0	12.5	8.0	9,000	218416893
CTF30B5ACS1+JMET08BS2N1	-	16.0	12.5	8.0	9,000	218416892
CTM24B5ABS1+JME12B2SN1	-	16.0	12.5	8.0	8,800	218416891
CTM30B5ACS1+JMC12B2SN1	-	16.0	12.5	8.0	9,000	218416890
CTU30B5XCS1+JMC12B2SN1+TXV	-	16.0	12.5	8.0	8,900	218416889
CTF30B5ACS1+JMC12B2SN1	-	16.0	12.5	8.0	8,900	218416888
CTM24B5ABS1+JME08B2SN1	-	16.0	12.5	8.0	8,800	218416886
CTM30B5ACS1+JME08B2SN1	-	16.0	12.5	8.0	8,900	218416885
CTU30B5XCS1+JME12B2SN1+TXV	-	16.0	12.5	8.0	8,900	218416882
CTF30B5ACS1+JME12B2SN1	-	16.0	12.5	8.0	8,900	218416881
CTU30B5XCS1+JMET12BS2N1+TXV	-	16.0	12.5	8.0	8,900	218416880
CTF30B5ACS1+JMET12BS2N1	-	16.0	12.5	8.0	8,900	218416879
CTM30B5ACS1+JMET08BS2N1	-	16.0	12.5	8.0	8,900	218416878
JHC18B5AB2SS1	-	16.0	12.5	8.0	8,900	218416783
JHC24B5AC2SS1	-	16.0	12.5	8.0	8,900	218416772
JHE18B5AB2SS1	-	16.0	12.5	8.0	8,800	218416716
JHE24B5AC2SS1	-	16.0	12.5	8.0	8,900	218416664
CTM30B5ACS2+JMC12B2SN1	-	16.0	12.5	8.0	9,000	218509673
CTM30B5ACS2	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218509671
CTM24B5ABS2	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218509668
CTU30B5XCS2+TXV	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218509478
CTF30B5ACS2	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218509476
CTU30B5XCS2+JMC12B2SN1+TXV	-	16.0	12.5	8.0	8,900	218509473
CTF30B5ACS2+JMC12B2SN1	-	16.0	12.5	8.0	8,900	218509471
CTF24B5ABS2	Y82V080B12SMPC1	16.0	12.0	8.0	8,900	218509403
CTF24B5ABS2+JME12B2SN2	-	16.0	12.5	8.0	8,800	218636846
CTF24B5ABS2+JME08B2SN2	-	16.0	12.5	8.0	8,900	218636845
CTM30B5ACS2+JME08B2SN2	-	16.0	12.5	8.0	8,900	218636844
CTU30B5XCS2+JME08B2SN2+TXV	-	16.0	12.5	8.0	9,000	218636842
CTF30B5ACS2+JME08B2SN2	-	16.0	12.5	8.0	9,000	218636841
CTU30B5XCS2+JME12B2SN2+TXV	-	16.0	12.5	8.0	8,900	218636838
CTF30B5ACS2+JME12B2SN2	-	16.0	12.5	8.0	8,900	218636837
CTM24B5ABS1+JMET12BS2N1	-	15.2	12.5	7.8	8,800	218416924
CTU24A5XBS1+TXV	Y82E060A12LMPS1	15.2	12.5	7.8	8,800	218416917
CTF24A5ABS1	Y82E060A12LMPS1	15.2	12.5	7.8	8,800	218416916
CTM30B5ACS1	TM8Y080B12MP11	15.2	12.5	7.8	8,900	218416909
CTU30B5XCS1+TXV	Y82E080B12LMPS1	15.2	12.5	7.8	8,800	218416908
CTF30B5ACS1	Y82E080B12LMPS1	15.2	12.5	7.8	8,800	218416907
CTM24B5ABS1+JMC12B2SN1	-	15.2	12.5	7.8	8,900	218416905
CTU24A5XBS1+TXV	Y82V060A12SMPC1	15.2	12.0	7.8	8,900	218416904
CTF24A5ABS1	Y82V060A12SMPC1	15.2	12.0	7.8	8,900	218416903
CTM24A5ABS1	Y82V060A12SMPC1	15.2	12.0	7.8	8,900	218416898
CTF24B5ABS1+JMC12B2SN1	-	15.2	12.5	7.8	8,900	218416887
CTM24B5ABS1+JMET08BS2N1	-	15.2	12.5	7.8	8,900	218416884
CTM30B5ACS1+JMET12BS2N1	-	15.2	12.5	7.8	8,800	218416883
CTU24A5XBS1+TXV	TMLE040A12MP11	15.2	12.5	7.8	9,000	218416873
CTU24A5XBS1+TXV	TM8E040A12MP11	15.2	12.5	7.8	9,000	218416872
CTF24A5ABS1	TMLE040A12MP11	15.2	12.5	7.8	9,000	218416871

Yearly running cost in 10 large cities$499-$1,315

Phoenix, AZ$613/yr
Miami, FL$499/yr
Houston, TX$549/yr
Atlanta, GA$552/yr
Los Angeles, CA$536/yr
New York, NY$1,315/yr
Chicago, IL$1,067/yr
Denver, CO$887/yr
Seattle, WA$544/yr
Minneapolis, MN$1,097/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 York YH618E2S11?: The York YH618E2S11 is rated at up to 16.0 SEER2 and 12.0 EER2 for cooling and up to 8.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 288 certified matchups SEER2 ranges from 15.2-16.0.
Is the York YH618E2S11 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 1.5-ton model.
How much does the York YH618E2S11 cost to run per year?: At its rated efficiency it costs about $499-$1,315 a year in electricity in large U.S. cities, depending on climate and local rates - for example $613 in Phoenix and $1,097 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 York YH618E2S11?: ENERGY STAR lists 288 certified combinations for this outdoor unit. The highest-rated ones use CTM30B5ACS1, CTF24B5ABS1+JME08B2SN1, CTM30B5ACS1+JME12B2SN1.
What refrigerant does the York YH618E2S11 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 $606/yrYou save $264/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 York YH618E2S11

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: $606
Current system, per year: $870
You save per year: $264
Payback: 24.7 years
Net after 10 years: -$3,864

Cooling $374Heating $232Electricity used: 3,790 kWhSaved vs. a minimum-efficiency heat pump: $60

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 1.5 ton models

WeatherMaker PH5SAN519**AB16.0 SEER2 · 8.0 HSPF2
Coleman XH518E2S1116.0 SEER2 · 7.8 HSPF2
Tempstar T5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
Friedrich FWP15AY18AJ2N16.0 SEER2 · 7.8 HSPF2
Luxaire XH618E2S1116.0 SEER2 · 8.0 HSPF2
Heil H5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
Bryant PH5SAN518**AA15.5 SEER2 · 8.0 HSPF2
Heil B5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2

See all 170 1.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 15, 2026. How we use the data.