What is the SEER2 rating of the WeatherMaker PH5SAN519**AB?

The WeatherMaker PH5SAN519**AB is rated at up to 16.0 SEER2 and 12.5 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 50 certified matchups SEER2 ranges from 15.2-16.0.

Is the WeatherMaker PH5SAN519**AB 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 WeatherMaker PH5SAN519**AB 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 WeatherMaker PH5SAN519**AB?

ENERGY STAR lists 50 certified combinations for this outdoor unit. The highest-rated ones use CAA**2517AM, CAA**1917AM, FM(C,U)5Z30**AL.

1.5-ton central heat pump · 15 SEER2 HP

WeatherMaker PH5SAN519**AB

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

Ranks #134 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: 12.5 Cooling efficiency on a 95°F day
Very good · beats 80%
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 - 50 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	WeatherMaker
Outdoor unit model	PH5SAN519**AB
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	September 22, 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 CAA**2517AM at the standard test temperatures, in BTU/h:

Certified matchups50 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.
CAA**2517AM	PG95MSUA48060B**	16.0	12.5	8.0	8,400	218754494
CAA**2517AM	PG92MSAA48080B**	16.0	13.0	8.0	8,300	218754487
CAA**2517AM	PG92MSAA42060B**	16.0	13.0	8.0	8,400	218754486
CAA**2517AM	PG92MSAA36060A**	16.0	13.0	8.0	8,300	218754485
CAA**2517AM	PG80VTLB48090B**	16.0	13.0	8.0	8,400	218754483
CAA**2517AM	PG80VTLB48070B**	16.0	13.0	8.0	8,400	218754482
CAA**2517AM	PG80VTLB36070A**	16.0	13.0	8.0	8,400	218754481
CAA**2517AM	PG80VTLB36045A**	16.0	13.0	8.0	8,400	218754480
CAA**2517AM	PG80MSUA48060B**	16.0	13.0	8.0	8,400	218754479
CAA**2517AM	PG80MSUA36040B**	16.0	13.0	8.0	8,300	218754478
CAA**2517AM	PG80MS(A,L)A42090B**	16.0	13.0	8.0	8,300	218754477
CAA**2517AM	PG80MS(A,L)A48070B**	16.0	13.0	8.0	8,400	218754476
CAA**2517AM	PG80MS(A,L)A36070B**	16.0	13.0	8.0	8,400	218754475
CAA**2517AM	PG80MS(A,L)A36070A**	16.0	13.0	8.0	8,300	218754474
CAA**2517AM	PG80MS(A,L)A36045A**	16.0	13.0	8.0	8,400	218754472
CAA**1917AM	PG92MSAA48080B**	16.0	13.0	8.0	8,300	218754414
CAA**1917AM	PG92MSAA42060B**	16.0	13.0	8.0	8,400	218754413
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	218754082
CAA**1917AM	PG80MSUA48060B**	16.0	13.0	7.8	8,300	218754407
CAA**1917AM	PG80MSUA36040B**	16.0	13.0	7.8	8,300	218754406
CAA**2517AM	PG97VTAA48060B**	15.5	13.0	8.0	8,400	218754499
CAA**2517AM	PG96VTAB48060B**	15.5	13.0	8.0	8,400	218754498
CAA**2517AM	PG96VTAB36060A**	15.5	13.0	8.0	8,400	218754497
CAA**2517AM	PG96MSAA48080B**	15.5	13.0	8.0	8,500	218754492
CAA**2517AM	PG96MSAA36060A**	15.5	13.0	8.0	8,400	218754491
CAA**2517AM	PG96MSAA30026A**	15.5	13.0	8.0	8,400	218754488
CAA**2517AM	PG80MS(A,L)A42045B**	15.5	13.0	8.0	8,400	218754473
CAA**1917AM	PG97VTAA48080B**	15.5	13.0	8.0	8,300	218754429
CAA**1917AM	PG97VTAA48060B**	15.5	13.0	8.0	8,400	218754428
CAA**1917AM	PG96VTAB48080B**	15.5	13.0	8.0	8,300	218754427
CAA**1917AM	PG96VTAB48060B**	15.5	13.0	8.0	8,400	218754426
CAA**1917AM	PG96MSAA48080B**	15.5	13.0	8.0	8,400	218754420
CAA**1917AM	PG96MSAA36060A**	15.5	13.0	8.0	8,400	218754418
CAA**1917AM	PG92MSAA36060A**	15.5	13.0	8.0	8,300	218754412
CAA**1917AM	PG80VTLB48090B**	15.5	13.0	8.0	8,300	218754409
CAA**1917AM	PG80VTLB48070B**	15.5	13.0	8.0	8,400	218754408
FM(C,U)5S24**AL	-	15.5	12.5	7.8	8,100	218754758
FM(C,U)5S18**AL	-	15.5	12.5	7.8	8,100	218754757
FJ5AN*B24L	-	15.5	13.0	7.8	8,000	218754748
CAA**2517AM	PG95MSUA36040B**	15.5	12.5	7.8	8,400	218754493
CAA**1917AM	PG95MSUA48060B**	15.5	12.5	7.8	8,400	218754422
PF5TNXB24L	-	15.5	13.0	7.8	8,100	218754087
FMA5X24**AL	-	15.5	13.0	7.8	7,900	218754086
FMA5X18**AL	-	15.5	13.0	7.8	7,900	218754085
FM(C,U)5Z24**AL	-	15.5	13.0	7.8	8,100	218754081
FM(C,U)5Z18**AL	-	15.5	13.0	7.8	8,100	218754080
PF5MN*B24L	-	15.5	13.0	7.8	8,000	218754077
FJ5AN*A18L	-	15.2	12.5	7.8	8,100	218754750
FMA5L18**AL	-	15.2	12.5	7.8	8,400	218754083
PF5MN*A18L	-	15.2	12.5	7.8	8,100	218754076

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 WeatherMaker PH5SAN519**AB?: The WeatherMaker PH5SAN519**AB is rated at up to 16.0 SEER2 and 12.5 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 50 certified matchups SEER2 ranges from 15.2-16.0.
Is the WeatherMaker PH5SAN519**AB 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 WeatherMaker PH5SAN519**AB 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 WeatherMaker PH5SAN519**AB?: ENERGY STAR lists 50 certified combinations for this outdoor unit. The highest-rated ones use CAA**2517AM, CAA**1917AM, FM(C,U)5Z30**AL.
What refrigerant does the WeatherMaker PH5SAN519**AB 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 WeatherMaker PH5SAN519**AB

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

Tempstar T5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
York YH618E2S1116.0 SEER2 · 8.0 HSPF2
Luxaire XH618E2S1116.0 SEER2 · 8.0 HSPF2
Coleman XH518E2S1116.0 SEER2 · 7.8 HSPF2
Heil H5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
Friedrich FWP15AY18AJ2N16.0 SEER2 · 7.8 HSPF2
Heil B5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
York YH518E2S1116.0 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 September 22, 2026. How we use the data.