What is the SEER2 rating of the Comfortmaker C5H3V36*K*AAA?

The Comfortmaker C5H3V36*K*AAA is rated at up to 22.5 SEER2 and 12.5 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 1692 certified matchups SEER2 ranges from 18.0-22.5.

Is the Comfortmaker C5H3V36*K*AAA good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 29,600 BTU/h at 5°F with a COP of 2.14, so it is still 2.1 times as efficient as electric resistance heat at that temperature.

How much does the Comfortmaker C5H3V36*K*AAA cost to run per year?

At its rated efficiency it costs about $726-$2,389 a year in electricity in large U.S. cities, depending on climate and local rates - for example $957 in Phoenix and $2,044 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 Comfortmaker C5H3V36*K*AAA?

ENERGY STAR lists 1692 certified combinations for this outdoor unit. The highest-rated ones use EVD5X61M24A*+WALLCON, EVM5X61M24A*+WALLCON, FCMA5B60L0D*+WALLCON.

3-ton central heat pump · SoftSound 23 VS Heat Pump

Comfortmaker C5H3V36KAAA

Excellent cooling efficiency and very good heating efficiency for a 3-ton central heat pump, and certified for cold climates.

Ranks #4 of 302 3 ton central heat pumps for cooling efficiency, and costs about $956 a year to run in a mixed climate like Atlanta.

SEER2: 22.5 Cooling efficiency over a season
Excellent · beats 99%
HSPF2: 9.5 Heating efficiency over a season
Very good · beats 70%
EER2: 12.5 Cooling efficiency on a 95°F day
Very good · beats 80%
Heat at 5°F: 29,600 BTU/h75% of its 47°F output
Average · beats 67%

A good fit if…

You want low cooling bills - its SEER2 beats 99% of central heat pumps.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 29,600 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 70% 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

Specifications3 ton, R-454B

General
Brand	Comfortmaker
Also sold as	Day & Night, Keeprite
Outdoor unit model	C5H3V36KAAA
Series	SoftSound 23 VS Heat Pump
Type	Central heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	November 1, 2024
Last certified	July 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better	22.5 (range 18.0-22.5)
EER2Efficiency at 95°F outdoors	10.0-13.0
Cooling capacity	32,000-36,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.1-9.5
Capacity at 47°F	33,400-39,500 BTU/h
Capacity at 17°F	29,200-34,800 BTU/h
Capacity at 5°F	25,200-29,600 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.88-2.14
ENERGY STAR cold climate	Yes

Heating output as it gets colder75% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with EVD5X61M24A*+WALLCON at the standard test temperatures, in BTU/h:

Certified matchups1,692 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 1,692 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.
EVD5X61M24A*+WALLCON · cold climate	80CTL0902120B	22.5	12.5	8.5	28,200	215936930
EVD5X61M24A*+WALLCON · cold climate	80CTL0902120B	22.5	12.5	8.5	28,200	215936929
EVD5X61M24A*+WALLCON · cold climate	80CTL0902120B	22.5	12.5	8.5	28,200	215936931
EVD5X61M24A*+WALLCON · cold climate	80CTL1102120B	22.5	12.5	8.5	28,200	215936939
EVD5X61M24A*+WALLCON · cold climate	80CTL1102120B	22.5	12.5	8.5	28,200	215936941
EVD5X61M24A*+WALLCON · cold climate	80CTL1102120B	22.5	12.5	8.5	28,200	215936940
EVD5X61M24A*+WALLCON · cold climate	95CSU1002122B	22.5	12.5	8.5	28,200	215936950
EVD5X61M24A*+WALLCON · cold climate	95CSU1002122B	22.5	12.5	8.5	28,200	215936949
EVD5X61M24A*+WALLCON · cold climate	95CSU1002122B	22.5	12.5	8.5	28,200	215936951
EVM5X61M24A*+WALLCON · cold climate	80CTL0902120B	22.5	12.5	8.5	28,200	215935460
EVM5X61M24A*+WALLCON · cold climate	80CTL0902120B	22.5	12.5	8.5	28,200	215935459
EVM5X61M24A*+WALLCON · cold climate	80CTL0902120B	22.5	12.5	8.5	28,200	215935461
EVM5X61M24A*+WALLCON · cold climate	80CTL1102120B	22.5	12.5	8.5	28,200	215935469
EVM5X61M24A*+WALLCON · cold climate	80CTL1102120B	22.5	12.5	8.5	28,200	215935470
EVM5X61M24A*+WALLCON · cold climate	80CTL1102120B	22.5	12.5	8.5	28,200	215935471
EVM5X61M24A*+WALLCON · cold climate	80CTL1352422B	22.5	12.5	8.5	28,200	215935479
EVM5X61M24A*+WALLCON · cold climate	80CTL1352422B	22.5	12.5	8.5	28,200	215935480
EVM5X61M24A*+WALLCON · cold climate	80CTL1352422B	22.5	12.5	8.5	28,200	215935481
EVM5X61M24A*+WALLCON · cold climate	95CSU1002122B	22.5	12.5	8.5	28,200	215935489
EVM5X61M24A*+WALLCON · cold climate	95CSU1002122B	22.5	12.5	8.5	28,200	215935490
EVM5X61M24A*+WALLCON · cold climate	95CSU1002122B	22.5	12.5	8.5	28,200	215935491
FCMA5B60L0D*+WALLCON · cold climate	-	22.0	13.0	9.5	25,200	215933970
FCMA5B60L0D*+WALLCON · cold climate	-	22.0	13.0	9.5	25,200	215933969
FCMA5B60L0D*+WALLCON · cold climate	-	22.0	13.0	9.5	25,200	215933971
EVD5X61M21A*+WALLCON · cold climate	80CTL0701716B	22.0	12.0	9.0	28,600	215936879
EVD5X61M21A*+WALLCON · cold climate	80CTL0701716B	22.0	12.0	9.0	28,600	215936880
EVD5X61M21A*+WALLCON · cold climate	80CTL0701716B	22.0	12.0	9.0	28,600	215936881
EVD5X60M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	9.0	28,400	215936669
EVD5X60M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	9.0	28,400	215936671
EVD5X60M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	9.0	28,400	215936670
EVM5X49M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215935079
EVM5X49M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215935080
EVM5X49M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215935081
EVM5X49M21A*+WALLCON · cold climate	97CMN1002122B	22.0	12.5	8.5	28,600	215935120
EVM5X49M21A*+WALLCON · cold climate	97CMN1002122B	22.0	12.5	8.5	28,600	215935119
EVM5X49M21A*+WALLCON · cold climate	97CMN1002122B	22.0	12.5	8.5	28,600	215935121
EVD5X60M24A*+WALLCON · cold climate	80CTL0902120B	22.0	12.5	8.5	28,400	215936759
EVD5X60M24A*+WALLCON · cold climate	80CTL0902120B	22.0	12.5	8.5	28,400	215936760
EVD5X60M24A*+WALLCON · cold climate	80CTL0902120B	22.0	12.5	8.5	28,400	215936761
EVD5X60M24A*+WALLCON · cold climate	80CTL1102120B	22.0	12.5	8.5	28,400	215936769
EVD5X60M24A*+WALLCON · cold climate	80CTL1102120B	22.0	12.5	8.5	28,400	215936770
EVD5X60M24A*+WALLCON · cold climate	80CTL1102120B	22.0	12.5	8.5	28,400	215936771
EVD5X60M24A*+WALLCON · cold climate	80CTL1352422B	22.0	12.5	8.5	28,400	215936779
EVD5X60M24A*+WALLCON · cold climate	80CTL1352422B	22.0	12.5	8.5	28,400	215936780
EVD5X60M24A*+WALLCON · cold climate	80CTL1352422B	22.0	12.5	8.5	28,400	215936781
EVD5X60M24A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215936799
EVD5X60M24A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215936800
EVD5X60M24A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215936801
EVD5X61M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215936889
EVD5X61M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215936890
EVD5X61M21A*+WALLCON · cold climate	95CSU1002122B	22.0	12.5	8.5	28,400	215936891
EVM5X44M21A*+WALLCON · cold climate	80CTL0901716B	22.0	12.0	8.5	28,600	215934839
EVM5X44M21A*+WALLCON · cold climate	80CTL0901716B	22.0	12.0	8.5	28,600	215934840
EVM5X44M21A*+WALLCON · cold climate	80CTL0901716B	22.0	12.0	8.5	28,600	215934841
EVM5X44M21A*+WALLCON · cold climate	80CTL0902120B	22.0	12.5	8.5	28,400	215934849
EVM5X44M21A*+WALLCON · cold climate	80CTL0902120B	22.0	12.5	8.5	28,400	215934850
EVM5X60M21A*+WALLCON · cold climate	80CTL0901716B	22.0	12.0	8.5	28,600	215935209
EVM5X60M21A*+WALLCON · cold climate	80CTL0901716B	22.0	12.0	8.5	28,600	215935210
EVM5X60M21A*+WALLCON · cold climate	80CTL0901716B	22.0	12.0	8.5	28,600	215935211
EVM5X60M21A*+WALLCON · cold climate	80CTL0902120B	22.0	12.5	8.5	28,400	215935219

Yearly running cost in 10 large cities$726-$2,389

Phoenix, AZ$957/yr
Miami, FL$726/yr
Houston, TX$860/yr
Atlanta, GA$956/yr
Los Angeles, CA$949/yr
New York, NY$2,389/yr
Chicago, IL$1,960/yr
Denver, CO$1,646/yr
Seattle, WA$1,024/yr
Minneapolis, MN$2,044/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 Comfortmaker C5H3V36*K*AAA?: The Comfortmaker C5H3V36*K*AAA is rated at up to 22.5 SEER2 and 12.5 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 1692 certified matchups SEER2 ranges from 18.0-22.5.
Is the Comfortmaker C5H3V36*K*AAA good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 29,600 BTU/h at 5°F with a COP of 2.14, so it is still 2.1 times as efficient as electric resistance heat at that temperature.
How much does the Comfortmaker C5H3V36*K*AAA cost to run per year?: At its rated efficiency it costs about $726-$2,389 a year in electricity in large U.S. cities, depending on climate and local rates - for example $957 in Phoenix and $2,044 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 Comfortmaker C5H3V36*K*AAA?: ENERGY STAR lists 1692 certified combinations for this outdoor unit. The highest-rated ones use EVD5X61M24A*+WALLCON, EVM5X61M24A*+WALLCON, FCMA5B60L0D*+WALLCON.
What refrigerant does the Comfortmaker C5H3V36*K*AAA 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 $981/yrYou save $845/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 Comfortmaker C5H3V36*K*AAA

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: $981
Current system, per year: $1,826
You save per year: $845
Payback: 15.4 years
Net after 10 years: -$4,553

Cooling $538Heating $443Electricity used: 6,134 kWhSaved vs. a minimum-efficiency heat pump: $427

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

Carrier 27VNA336A*030 · cold climate22.5 SEER2 · 9.5 HSPF2
Heil H5H3V36*K*AAA · cold climate22.5 SEER2 · 9.5 HSPF2
LG KUSXA361A · cold climate23.5 SEER2 · 10.5 HSPF2
Tempstar B5H3V36*K*AAA · cold climate22.5 SEER2 · 9.5 HSPF2
TOSHIBA CARRIER MCY-MUB0368HS2P-UL · cold climate29.7 SEER2 · 12.2 HSPF2
Tempstar T5H3V36*K*AAA · cold climate22.5 SEER2 · 9.5 HSPF2
LG KUSXB361A · cold climate22.0 SEER2 · 10.3 HSPF2
Trane/American Standard 5HCL9036A1000A · cold climate21.2 SEER2 · 9.2 HSPF2

See all 302 3 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 16, 2026. How we use the data.