What is the SEER2 rating of the Coleman THF2B18S21?

The Coleman THF2B18S21 is rated at up to 15.2 SEER2 and 12.5 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Coleman THF2B18S21 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 Coleman THF2B18S21 cost to run per year?

At its rated efficiency it costs about $539-$1,331 a year in electricity in large U.S. cities, depending on climate and local rates - for example $649 in Phoenix and $1,100 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 Coleman THF2B18S21?

ENERGY STAR lists 49 certified combinations for this outdoor unit. The highest-rated ones use XAFC30CBAN1, XAFB30CBAN1, JHETB24CBAS2N1.

What refrigerant does the Coleman THF2B18S21 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.

1.5-ton central heat pump · LX SERIES

Coleman THF2B18S21

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

Ranks #164 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $568 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 7.8 Heating efficiency over a season
Below average · beats 5%
EER2: 12.5 Cooling efficiency on a 95°F day
Very good · beats 80%
Heat at 5°F: 10,200 BTU/h51% of its 47°F output
Excellent · beats 98%

A good fit if…

You want a choice of indoor units - 49 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.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications1.5 ton, R-410A

General
Brand	Coleman
Also sold as	Luxaire, Fraser-Johnston, CHAMPION HEATING AND COOLING, Johnson Controls
Outdoor unit model	THF2B18S21
Series	LX SERIES
Type	Central heat pump
Nominal size	1.5 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	May 18, 2023
Last certified	July 7, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	12.0-12.5
Cooling capacity	17,500-17,600 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8
Capacity at 47°F	16,000-16,500 BTU/h
Capacity at 17°F	10,100-11,800 BTU/h
Capacity at 5°F	8,000-10,200 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.04-2.48
ENERGY STAR cold climate	No

Heating output as it gets colder51% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with XAFC30CBAN1 at the standard test temperatures, in BTU/h:

Certified matchups49 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. 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.
XAFC30CBAN1	TL8E080C16UH11	15.2	12.5	7.8	8,200	210337153
XAFC30CBAN1	TL8E080C16UH11	15.2	12.5	7.8	8,200	210337154
XAFC30CBAN1	TL8E080C16UH11	15.2	12.5	7.8	8,200	210337155
XAFC30CBAN1	TL8E080C16UH11	15.2	12.5	7.8	8,200	210337156
XAFC30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210337363
XAFC30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210337362
XAFC30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210337364
XAFC30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210337361
XAFC30CBAN1	CP9C080B12MP13	15.2	12.5	7.8	8,100	210337369
XAFC30CBAN1	LP9C080B12MP13	15.2	12.5	7.8	8,100	210337370
XAFC30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210337368
XAFC30CBAN1	TM9E100C16MP12	15.2	12.5	7.8	8,200	210337378
XAFC30CBAN1	TM9E100C16MP12	15.2	12.5	7.8	8,200	210337377
XAFC30CBAN1	TM9E100C16MP12	15.2	12.5	7.8	8,200	210337379
XAFC30CBAN1	TM9E100C16MP12	15.2	12.5	7.8	8,200	210337380
XAFB30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210337691
XAFB30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210337689
XAFB30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210337690
XAFB30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210337692
XAFB30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210337697
JHETB24CBAS2N1	-	15.2	12.5	7.8	10,200	210336542
JHETB24CBAS2N1	-	15.2	12.5	7.8	10,200	210336541
JHETB24CBAS2N1	-	15.2	12.5	7.8	10,200	210336545
JHETB24CBAS2N1	-	15.2	12.5	7.8	10,200	210336546
XAFC30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210337365
XAFC30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210337367
XAFC30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210337366
XAFB30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210337700
XAFB30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210337698
XAFB30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210337699
XAFB30CBAN1	LP9C080B12MP13	15.2	12.5	7.8	8,100	210337706
XAFB30CBAN1	CP9C080B12MP13	15.2	12.5	7.8	8,100	210337705
XAFC30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210847122
JHETB24CBAS2N1	-	15.2	12.5	7.8	10,200	210803161
XAFB30CBAN1	TM9V080B12MP12	15.2	12.5	7.8	8,100	210848888
JHVTB24CBAC2N1	-	15.2	12.5	7.8	8,000	211221646
JHVTB24CBAC2N1	-	15.2	12.5	7.8	8,000	211221645
JHVTB24CBAC2N1	-	15.2	12.5	7.8	8,000	211221649
JHVTB24CBAC2N1	-	15.2	12.5	7.8	8,000	211221647
JHVTB24CBAC2N1	-	15.2	12.5	7.8	8,000	211221648
XAFC30CBAN1	TM9E100C16MP12	15.2	12.5	7.8	8,200	210850635
XAFC30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210845807
XAFB30CBAN1	TP9C080B12MP13	15.2	12.5	7.8	8,100	210846791
XAFC30CBAN1	TL8E080C16UH11	15.2	12.5	7.8	8,200	210846924
XAFB30CBAN1	Z9ET080B12SMPS1	15.2	12.0	7.8	8,200	216374993
XAFB30CBAN1	Z9ET080B12SMPS1	15.2	12.0	7.8	8,200	216374989
XAFB30CBAN1	Z9ET080B12SMPS1	15.2	12.0	7.8	8,200	216375001
XAFB30CBAN1	Z9ET080B12SMPS1	15.2	12.0	7.8	8,200	216374999
XAFB30CBAN1	Z9ET080B12SMPS1	15.2	12.0	7.8	8,200	216374995

Yearly running cost in 10 large cities$539-$1,331

Phoenix, AZ$649/yr
Miami, FL$539/yr
Houston, TX$582/yr
Atlanta, GA$568/yr
Los Angeles, CA$548/yr
New York, NY$1,331/yr
Chicago, IL$1,076/yr
Denver, CO$890/yr
Seattle, WA$544/yr
Minneapolis, MN$1,100/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 Coleman THF2B18S21?: The Coleman THF2B18S21 is rated at up to 15.2 SEER2 and 12.5 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Coleman THF2B18S21 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 Coleman THF2B18S21 cost to run per year?: At its rated efficiency it costs about $539-$1,331 a year in electricity in large U.S. cities, depending on climate and local rates - for example $649 in Phoenix and $1,100 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 Coleman THF2B18S21?: ENERGY STAR lists 49 certified combinations for this outdoor unit. The highest-rated ones use XAFC30CBAN1, XAFB30CBAN1, JHETB24CBAS2N1.
What refrigerant does the Coleman THF2B18S21 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 $636/yrYou save $243/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 Coleman THF2B18S21

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: $636
Current system, per year: $879
You save per year: $243
Payback: 26.7 years
Net after 10 years: -$4,070

Cooling $405Heating $231Electricity used: 3,978 kWhSaved vs. a minimum-efficiency heat pump: $35

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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Fujitsu FOP1518TJAYNA15.2 SEER2 · 7.8 HSPF2
Arcoaire R4H5S18*K*AAA15.2 SEER2 · 7.8 HSPF2
Kaden KOVH-18BAM152L15.2 SEER2 · 7.8 HSPF2
Airquest N4H5S18*K*AAA15.2 SEER2 · 7.8 HSPF2
Midea MOVA-18HN10-M152L15.2 SEER2 · 7.8 HSPF2

See all 170 1.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 7, 2026. How we use the data.