What is the SEER2 rating of the Luxaire XH636E2S11?

The Luxaire XH636E2S11 is rated at up to 17.0 SEER2 and 12.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2625 certified matchups SEER2 ranges from 15.2-17.0.

Is the Luxaire XH636E2S11 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 Luxaire XH636E2S11 cost to run per year?

At its rated efficiency it costs about $946-$2,575 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,173 in Phoenix and $2,156 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 Luxaire XH636E2S11?

ENERGY STAR lists 2625 certified combinations for this outdoor unit. The highest-rated ones use CTU48C5XFS1+JMVT17CC2N1+TXV, CTF48C5CFS1+JMVT17CC2N1, CTF48D5CFS1+JME18D2SN1.

3-ton central heat pump · LX SERIES

Luxaire XH636E2S11

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

Ranks #167 of 302 3 ton central heat pumps for cooling efficiency, and costs about $1,073 a year to run in a mixed climate like Atlanta.

SEER2: 17.0 Cooling efficiency over a season
Average · beats 49%
HSPF2: 8.5 Heating efficiency over a season
Below average · beats 38%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 19,800 BTU/h54% of its 47°F output
Excellent · beats 99%

A good fit if…

You want a choice of indoor units - 2,625 certified pairings.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
You mainly need heat - its HSPF2 is below average for central heat pumps.

Calculate my running cost

Details

Specifications3 ton, R-454B

General
Brand	Luxaire
Also sold as	Coleman, Fraser-Johnston, CHAMPION HEATING AND COOLING, Johnson Controls, Kenmore, EVCON, Guardian
Outdoor unit model	XH636E2S11
Series	LX SERIES
Type	Central heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Two-stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	April 1, 2025
Last certified	August 20, 2026
Cooling
SEER2Seasonal efficiency, higher is better	17.0 (range 15.2-17.0)
EER2Efficiency at 95°F outdoors	11.0-12.0
Cooling capacity	32,800-36,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.0-8.5
Capacity at 47°F	34,000-36,200 BTU/h
Capacity at 17°F	22,000-23,800 BTU/h
Capacity at 5°F	17,600-19,800 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00-2.50
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 CTU48C5XFS1+JMVT17CC2N1+TXV at the standard test temperatures, in BTU/h:

Certified matchups2,625 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 2,625 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.
CTU48C5XFS1+JMVT17CC2N1+TXV	-	17.0	12.0	8.5	19,100	217017096
CTF48C5CFS1+JMVT17CC2N1	-	17.0	12.0	8.5	19,100	217017094
CTF48D5CFS1+JME18D2SN1	-	17.0	12.0	8.5	19,000	217017108
CTF48C5CFS1+JMC17C2SN1	-	17.0	12.0	8.5	19,100	217017116
CTU48C5XFS1+JMC17C2SN1+TXV	-	17.0	12.0	8.5	19,100	217017118
CTF48C5CFS1+JMVT16CC2N1	-	17.0	12.0	8.5	19,300	217017120
CTU48C5XFS1+JMVT16CC2N1+TXV	-	17.0	12.0	8.5	19,300	217017122
CTF48C5CFS1+JME12C2SN1	-	17.0	12.0	8.5	19,000	217017132
CTF48C5CFS1	Z8ES120C16LMPS1	17.0	12.0	8.5	19,100	217017239
CTF48C5CFS1	Z8ES080C20LMPS1	17.0	12.0	8.5	19,300	217017222
CTU48C5XFS1+TXV	Z8ES080C20LMPS1	17.0	12.0	8.5	19,300	217017224
CTF48C5CFS1	Z8ES100C16LMPS1	17.0	12.0	8.5	19,500	217017233
CTU48C5XFS1+TXV	Z8ES100C16LMPS1	17.0	12.0	8.5	19,500	217017235
CTU48C5XFS1+TXV	Z8ES120C16LMPS1	17.0	12.0	8.5	19,100	217017241
CTU48C5XFS1+TXV	Z8ES080C20LMPS1	17.0	12.0	8.5	19,300	217017473
CTF48C5CFS1	Z8ES080C20LMPS1	17.0	12.0	8.5	19,300	217017474
CTU48C5XFS1+TXV	Z8ES100C16LMPS1	17.0	12.0	8.5	19,500	217017478
CTF48C5CFS1	Z8ES100C16LMPS1	17.0	12.0	8.5	19,500	217017479
CTU48C5XFS1+TXV	Z8ES120C16LMPS1	17.0	12.0	8.5	19,100	217017481
CTF48C5CFS1	Z8ES120C16LMPS1	17.0	12.0	8.5	19,100	217017482
CTU48C5XFS1+TXV	Z8ES100C16LMPS1	17.0	12.0	8.5	19,500	217017510
CTU48C5XFS1+TXV	Z8ES120C16LMPS1	17.0	12.0	8.5	19,100	217017507
CTF48C5CFS1	Z8ES120C16LMPS1	17.0	12.0	8.5	19,100	217017508
CTF48C5CFS1	Z8ES100C16LMPS1	17.0	12.0	8.5	19,500	217017511
CTU48C5XFS1+TXV	Z8ES080C20LMPS1	17.0	12.0	8.5	19,300	217017516
CTF48C5CFS1	Z8ES080C20LMPS1	17.0	12.0	8.5	19,300	217017517
CTU48C5XFS1+TXV	Z8ET100C16LMPS1	17.0	12.0	8.5	19,300	217017526
CTF48C5CFS1	Z8ET100C16LMPS1	17.0	12.0	8.5	19,300	217017528
CTU48C5XFS1+TXV	Z8ET080C16LMPS1	17.0	12.0	8.5	19,300	217017530
CTF48C5CFS1	Z8ET080C16LMPS1	17.0	12.0	8.5	19,300	217017531
CTU48C5XFS1+TXV	Z8ES120C16SMPS1	17.0	12.0	8.5	19,100	217017536
CTF48C5CFS1	Z8ES120C16SMPS1	17.0	12.0	8.5	19,100	217017537
CTF48C5CFS1	Z8ES100C16SMPS1	17.0	12.0	8.5	19,500	217017539
CTU48C5XFS1+TXV	Z8ES100C16SMPS1	17.0	12.0	8.5	19,500	217017540
CTU48C5XFS1+TXV	Z8ES080C20SMPS1	17.0	12.0	8.5	19,300	217017544
CTF48C5CFS1	Z8ES080C20SMPS1	17.0	12.0	8.5	19,300	217017545
CTU48C5XFS1+JME12C2SN1+TXV	-	17.0	12.0	8.5	19,000	217017550
CTF48C5CFS1+JME12C2SN1	-	17.0	12.0	8.5	19,000	217017561
CTU48C5XFS1+JMC17C2SN1+TXV	-	17.0	12.0	8.5	19,100	217017568
CTU48C5XFS1+JMVT16CC2N1+TXV	-	17.0	12.0	8.5	19,300	217017566
CTF48C5CFS1+JMVT16CC2N1	-	17.0	12.0	8.5	19,300	217017567
CTF48C5CFS1+JMC17C2SN1	-	17.0	12.0	8.5	19,100	217017569
CTF48D5CFS1+JME18D2SN1	-	17.0	12.0	8.5	19,000	217017573
CTU48C5XFS1+JMVT17CC2N1+TXV	-	17.0	12.0	8.5	19,100	217017579
CTF48C5CFS1+JMVT17CC2N1	-	17.0	12.0	8.5	19,100	217017580
CTF48D5CFS1+JMVT20DC2N1	-	17.0	12.0	8.5	19,100	217017589
CTF48D5CFS1+JMC20D2SN1	-	17.0	12.0	8.5	19,100	217017590
CTU48C5XFS1+JMC16C2SN1+TXV	-	17.0	12.0	8.5	19,300	217017597
CTF48C5CFS1+JMC16C2SN1	-	17.0	12.0	8.5	19,300	217017598
CTU48C5XFS1+JMET12CS2N1+TXV	-	17.0	12.0	8.5	19,300	217017599
CTF48C5CFS1+JMET12CS2N1	-	17.0	12.0	8.5	19,300	217017600
CTF48C5CFS1+JMET12CS2N1	-	17.0	12.0	8.5	19,300	217017071
CTU48C5XFS1+JMET12CS2N1+TXV	-	17.0	12.0	8.5	19,300	217017072
CTF48C5CFS1+JMC16C2SN1	-	17.0	12.0	8.5	19,300	217017073
CTU48C5XFS1+JMC16C2SN1+TXV	-	17.0	12.0	8.5	19,300	217017074
CTF48D5CFS1+JMC20D2SN1	-	17.0	12.0	8.5	19,100	217017081
CTF48D5CFS1+JMVT20DC2N1	-	17.0	12.0	8.5	19,100	217017082
CTF48C5CFS1	Z8ES120C16LMPS1	17.0	12.0	8.5	19,100	217017287
CTU48C5XFS1+TXV	Z8ES120C16LMPS1	17.0	12.0	8.5	19,100	217017289
CTF48C5CFS1	Z8ES100C16LMPS1	17.0	12.0	8.5	19,500	217017293

Yearly running cost in 10 large cities$946-$2,575

Phoenix, AZ$1,173/yr
Miami, FL$946/yr
Houston, TX$1,051/yr
Atlanta, GA$1,073/yr
Los Angeles, CA$1,046/yr
New York, NY$2,575/yr
Chicago, IL$2,093/yr
Denver, CO$1,742/yr
Seattle, WA$1,071/yr
Minneapolis, MN$2,156/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 Luxaire XH636E2S11?: The Luxaire XH636E2S11 is rated at up to 17.0 SEER2 and 12.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2625 certified matchups SEER2 ranges from 15.2-17.0.
Is the Luxaire XH636E2S11 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 Luxaire XH636E2S11 cost to run per year?: At its rated efficiency it costs about $946-$2,575 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,173 in Phoenix and $2,156 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 Luxaire XH636E2S11?: ENERGY STAR lists 2625 certified combinations for this outdoor unit. The highest-rated ones use CTU48C5XFS1+JMVT17CC2N1+TXV, CTF48C5CFS1+JMVT17CC2N1, CTF48D5CFS1+JME18D2SN1.
What refrigerant does the Luxaire XH636E2S11 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 $1,167/yrYou save $607/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 Luxaire XH636E2S11

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: $1,167
Current system, per year: $1,773
You save per year: $607
Payback: 21.4 years
Net after 10 years: -$6,934

Cooling $708Heating $459Electricity used: 7,292 kWhSaved vs. a minimum-efficiency heat pump: $195

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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York YH636E2S1117.0 SEER2 · 8.5 HSPF2
Friedrich RD16AY36AJVC · cold climate17.0 SEER2 · 8.5 HSPF2
Samsung AC036BXUDCH · cold climate17.0 SEER2 · 8.1 HSPF2
Carrier GH8TAN536**AA17.0 SEER2 · 8.5 HSPF2
Coleman HC19B362117.0 SEER2 · 7.8 HSPF2

See all 302 3 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of August 20, 2026. How we use the data.