What is the SEER2 rating of the ECOTEMP W5H5S19*K*AAA?

The ECOTEMP W5H5S19*K*AAA is rated at up to 16.0 SEER2 and 13.0 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 56 certified matchups SEER2 ranges from 15.2-16.0.

Is the ECOTEMP W5H5S19*K*AAA 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 ECOTEMP W5H5S19*K*AAA cost to run per year?

At its rated efficiency it costs about $561-$1,526 a year in electricity in large U.S. cities, depending on climate and local rates - for example $695 in Phoenix and $1,277 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 ECOTEMP W5H5S19*K*AAA?

ENERGY STAR lists 56 certified combinations for this outdoor unit. The highest-rated ones use FM(C,U)5Z30**AL, W5A*25M17XA, WCHL245*B.

1.5-ton central heat pump · 15 SEER2 HP

ECOTEMP W5H5S19KAAA

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

Ranks #129 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $636 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: 13.0 Cooling efficiency on a 95°F day
Very good · beats 89%
Heat at 5°F: 8,500 BTU/h43% of its 47°F output
Below average · beats 39%

A good fit if…

You want a choice of indoor units - 56 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	ECOTEMP
Also sold as	Grandaire
Outdoor unit model	W5H5S19KAAA
Series	15 SEER2 HP
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	July 31, 2025
Last certified	June 29, 2026
Cooling
SEER2Seasonal efficiency, higher is better	16.0 (range 15.2-16.0)
EER2Efficiency at 95°F outdoors	12.5-13.0
Cooling capacity	17,700-19,300 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.0
Capacity at 47°F	18,400-19,500 BTU/h
Capacity at 17°F	10,300-11,000 BTU/h
Capacity at 5°F	7,900-8,500 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.90-2.00
ENERGY STAR cold climate	No

Heating output as it gets colder43% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FM(C,U)5Z30**AL at the standard test temperatures, in BTU/h:

Certified matchups56 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.
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687112
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687113
W5A*25M17XA	WFSU060B048B*	16.0	12.5	8.0	8,400	217705783
W5A*25M17XA	WFSU060B048B*	16.0	12.5	8.0	8,400	217705784
W5A*25M17XA	WFE045A036C	16.0	13.0	8.0	8,400	217704937
W5A*25M17XA	WFE045A036C	16.0	13.0	8.0	8,400	217704938
W5A*25M17XA	WFE070A036C	16.0	13.0	8.0	8,300	217704987
W5A*25M17XA	WFE070A036C	16.0	13.0	8.0	8,300	217704988
W5A*25M17XA	WFE070B036C	16.0	13.0	8.0	8,400	217705012
W5A*25M17XA	WFE070B036C	16.0	13.0	8.0	8,400	217705013
W5A*25M17XA	WFE070B048C	16.0	13.0	8.0	8,400	217705039
W5A*25M17XA	WFE070B048C	16.0	13.0	8.0	8,400	217705040
W5A*25M17XA	WFE090B042C	16.0	13.0	8.0	8,300	217705066
W5A*25M17XA	WFE090B042C	16.0	13.0	8.0	8,300	217705067
W5A*25M17XA	WFEU040B036B*	16.0	13.0	8.0	8,300	217705173
W5A*25M17XA	WFEU040B036B*	16.0	13.0	8.0	8,300	217705174
W5A*25M17XA	WFEU060B048B*	16.0	13.0	8.0	8,400	217705200
W5A*25M17XA	WFEU060B048B*	16.0	13.0	8.0	8,400	217705201
W5A*25M17XA	WFET045A036A*	16.0	13.0	8.0	8,400	217705313
W5A*25M17XA	WFET045A036A*	16.0	13.0	8.0	8,400	217705314
W5A*25M17XA	WFET070A036A*	16.0	13.0	8.0	8,400	217705320
W5A*25M17XA	WFET070A036A*	16.0	13.0	8.0	8,400	217705321
W5A*25M17XA	WFET090B048A*	16.0	13.0	8.0	8,400	217705350
W5A*25M17XA	WFET090B048A*	16.0	13.0	8.0	8,400	217705351
W5A*25M17XA	WFAX060B042B*	16.0	13.0	8.0	8,400	217705493
W5A*25M17XA	WFAX060B042B*	16.0	13.0	8.0	8,400	217705494
W5A*25M17XA	WFAX080B048B*	16.0	13.0	8.0	8,300	217705520
W5A*25M17XA	WFAX080B048B*	16.0	13.0	8.0	8,300	217705521
W5A*25M17XA	WFSX080B048B*	15.5	13.0	8.0	8,500	217705650
W5A*25M17XA	WFSX080B048B*	15.5	13.0	8.0	8,500	217705649
W5A*25M17XA	WFST060B048A*	15.5	13.0	8.0	8,400	217705993
W5A*25M17XA	WFST060B048A*	15.5	13.0	8.0	8,400	217705994
W5A*25M17XA	WFJT060B048A*	15.5	13.0	8.0	8,400	217706018
W5A*25M17XA	WFJT060B048A*	15.5	13.0	8.0	8,400	217706019
WCHL245*B	-	15.5	13.0	7.8	8,000	217686953
WCHL245*B	-	15.5	13.0	7.8	8,000	217686952
FM(C,U)5Z24**AL	-	15.5	13.0	7.8	8,100	217687080
FM(C,U)5Z24**AL	-	15.5	13.0	7.8	8,100	217687081
FMA5X18**AL	-	15.5	13.0	7.8	7,900	217687208
FMA5X18**AL	-	15.5	13.0	7.8	7,900	217687209
FMA5X24**AL	-	15.5	13.0	7.8	7,900	217687240
FMA5X24**AL	-	15.5	13.0	7.8	7,900	217687241
WCGL245*B	-	15.5	13.0	7.8	8,100	217687283
WCGL245*B	-	15.5	13.0	7.8	8,100	217687284
FM(C,U)5Z18**AL	-	15.5	13.0	7.8	8,100	217687048
FM(C,U)5Z18**AL	-	15.5	13.0	7.8	8,100	217687049
W5A*25M17XA	WFSU040B036B*	15.5	12.5	7.8	8,400	217705756
W5A*25M17XA	WFSU040B036B*	15.5	12.5	7.8	8,400	217705757
FM(C,U)5S24**AL	-	15.5	12.5	7.8	8,100	218452469
FM(C,U)5S24**AL	-	15.5	12.5	7.8	8,100	218452468
FM(C,U)5S18**AL	-	15.5	12.5	7.8	8,100	218452450
FM(C,U)5S18**AL	-	15.5	12.5	7.8	8,100	218452449
WCHL185*A	-	15.2	12.5	7.8	8,100	217686888
WCHL185*A	-	15.2	12.5	7.8	8,100	217686889
FMA5L18**AL	-	15.2	12.5	7.8	8,400	217687144
FMA5L18**AL	-	15.2	12.5	7.8	8,400	217687145

Yearly running cost in 10 large cities$561-$1,526

Phoenix, AZ$695/yr
Miami, FL$561/yr
Houston, TX$623/yr
Atlanta, GA$636/yr
Los Angeles, CA$620/yr
New York, NY$1,526/yr
Chicago, IL$1,240/yr
Denver, CO$1,032/yr
Seattle, WA$635/yr
Minneapolis, MN$1,277/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 ECOTEMP W5H5S19*K*AAA?: The ECOTEMP W5H5S19*K*AAA is rated at up to 16.0 SEER2 and 13.0 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 56 certified matchups SEER2 ranges from 15.2-16.0.
Is the ECOTEMP W5H5S19*K*AAA 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 ECOTEMP W5H5S19*K*AAA cost to run per year?: At its rated efficiency it costs about $561-$1,526 a year in electricity in large U.S. cities, depending on climate and local rates - for example $695 in Phoenix and $1,277 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 ECOTEMP W5H5S19*K*AAA?: ENERGY STAR lists 56 certified combinations for this outdoor unit. The highest-rated ones use FM(C,U)5Z30**AL, W5A*25M17XA, WCHL245*B.
What refrigerant does the ECOTEMP W5H5S19*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 $692/yrYou save $298/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 ECOTEMP W5H5S19*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: $692
Current system, per year: $990
You save per year: $298
Payback: 23.5 years
Net after 10 years: -$4,020

Cooling $420Heating $272Electricity used: 4,324 kWhSaved vs. a minimum-efficiency heat pump: $68

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

Day & Night R5H5S19*K*AAA16.0 SEER2 · 8.0 HSPF2
Heil B5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
Carrier 27SPA619A**3016.0 SEER2 · 8.0 HSPF2
Heil H5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
Bryant PH5SAN519**AA16.0 SEER2 · 8.0 HSPF2
Luxaire XH618E2S1116.0 SEER2 · 8.0 HSPF2
Bryant GH5SAN519**AA16.0 SEER2 · 8.0 HSPF2
Tempstar T5H6S19*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 June 29, 2026. How we use the data.