What is the SEER2 rating of the WeatherMaker PH5SAN536**AB?

The WeatherMaker PH5SAN536**AB 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 21 certified matchups SEER2 ranges from 15.2-16.0.

Is the WeatherMaker PH5SAN536**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 3-ton model.

How much does the WeatherMaker PH5SAN536**AB cost to run per year?

At its rated efficiency it costs about $1,021-$2,694 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,254 in Phoenix and $2,247 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 PH5SAN536**AB?

ENERGY STAR lists 21 certified combinations for this outdoor unit. The highest-rated ones use FEVA0048**+NAVA54801CK, FJ5AN*C48L, FMA5X36**AL.

3-ton central heat pump · 15 SEER2 HP

WeatherMaker PH5SAN536**AB

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

Ranks #251 of 302 3 ton central heat pumps for cooling efficiency, and costs about $1,131 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: 18,100 BTU/h48% of its 47°F output
Very good · beats 80%

A good fit if…

You want a choice of indoor units - 21 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

Specifications3 ton, R-454B

General
Brand	WeatherMaker
Outdoor unit model	PH5SAN536**AB
Series	15 SEER2 HP
Type	Central heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	January 1, 2024
Last certified	September 22, 2026
Cooling
SEER2Seasonal efficiency, higher is better	16.0 (range 15.2-16.0)
EER2Efficiency at 95°F outdoors	12.0-13.0
Cooling capacity	33,800-36,800 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.0
Capacity at 47°F	33,200-36,400 BTU/h
Capacity at 17°F	21,000-22,800 BTU/h
Capacity at 5°F	16,100-18,100 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00-2.22
ENERGY STAR cold climate	No

Heating output as it gets colder48% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FEVA0048**+NAVA54801CK at the standard test temperatures, in BTU/h:

Certified matchups21 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.
FEVA0048**+NAVA54801CK	-	16.0	13.0	8.0	17,400	218754062
FJ5AN*C48L	-	15.5	13.0	7.8	17,400	218754746
FMA5X36**AL	-	15.5	12.5	7.8	17,000	218754048
FEVB0048**+NAVA54801CK	-	15.5	12.5	7.8	17,400	218754040
PF5MN*C48L	-	15.5	13.0	7.8	17,400	218753942
PF5TNXC48L	-	15.5	12.5	7.8	16,700	218753938
FM(C,U)5S36**AL	-	15.2	12.0	8.0	17,300	218754756
FJ5AN*C42L	-	15.2	12.5	7.8	16,100	218754744
FM(C,U)5Z36**AL	-	15.2	12.5	7.8	17,200	218754057
PF5MN*C42L	-	15.2	12.5	7.8	16,100	218753937
CVAVA4224XMA	PG80MSUA60100C**	15.2	12.0	7.8	18,100	218753930
CAA**4821AM	PG92MSAA60100C**	15.2	12.0	7.8	17,600	218753929
CAA**4821AM	PG80VTLB60090C**	15.2	12.0	7.8	17,500	218753928
CAA**4821AM	PG80MSUA60080C**	15.2	12.0	7.8	17,300	218753927
CAA**4821AM	PG80MSUA48060B**	15.2	12.0	7.8	17,600	218753926
CAA**4821AM	PG80MS(A,L)A60110C**	15.2	12.0	7.8	17,600	218753925
CAA**4821AM	PG80MS(A,L)A60090C**	15.2	12.0	7.8	17,500	218753924
CAA**4321AM	PG92MSAA60100C**	15.2	12.0	7.8	17,900	218753923
CAA**4321AM	PG80MS(A,L)A60110C**	15.2	12.0	7.8	18,000	218753922
CAA**4321AM	PG80MS(A,L)A60090C**	15.2	12.0	7.8	17,900	218753921
CAA**3721AM	PG80MS(A,L)A60090C**	15.2	12.0	7.8	17,900	218753920

Yearly running cost in 10 large cities$1,021-$2,694

Phoenix, AZ$1,254/yr
Miami, FL$1,021/yr
Houston, TX$1,124/yr
Atlanta, GA$1,131/yr
Los Angeles, CA$1,099/yr
New York, NY$2,694/yr
Chicago, IL$2,186/yr
Denver, CO$1,816/yr
Seattle, WA$1,115/yr
Minneapolis, MN$2,247/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 PH5SAN536**AB?: The WeatherMaker PH5SAN536**AB 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 21 certified matchups SEER2 ranges from 15.2-16.0.
Is the WeatherMaker PH5SAN536**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 3-ton model.
How much does the WeatherMaker PH5SAN536**AB cost to run per year?: At its rated efficiency it costs about $1,021-$2,694 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,254 in Phoenix and $2,247 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 PH5SAN536**AB?: ENERGY STAR lists 21 certified combinations for this outdoor unit. The highest-rated ones use FEVA0048**+NAVA54801CK, FJ5AN*C48L, FMA5X36**AL.
What refrigerant does the WeatherMaker PH5SAN536**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 $1,242/yrYou save $540/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 PH5SAN536**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: $1,242
Current system, per year: $1,781
You save per year: $540
Payback: 24.1 years
Net after 10 years: -$7,603

Cooling $766Heating $476Electricity used: 7,760 kWhSaved vs. a minimum-efficiency heat pump: $123

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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Comfort-Aire HSA1436S1-**A16.0 SEER2 · 7.8 HSPF2
Lennox EL16KP1-036-230A16.0 SEER2 · 8.0 HSPF2
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See all 302 3 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 22, 2026. How we use the data.