What is the SEER2 rating of the WeatherKing WP15AY36AJ2N?

The WeatherKing WP15AY36AJ2N is rated at up to 16.0 SEER2 and 12.0 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 311 certified matchups SEER2 ranges from 15.2-16.0.

Is the WeatherKing WP15AY36AJ2N 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 WeatherKing WP15AY36AJ2N cost to run per year?

At its rated efficiency it costs about $1,005-$2,754 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,248 in Phoenix and $2,307 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 WeatherKing WP15AY36AJ2N?

ENERGY STAR lists 311 certified combinations for this outdoor unit. The highest-rated ones use RH2VY3621STACN, RH2VY3617STACN, TCFY3621STANM.

3-ton central heat pump · W Series

WeatherKing WP15AY36AJ2N

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

Ranks #260 of 302 3 ton central heat pumps for cooling efficiency, and costs about $1,146 a year to run in a mixed climate like Atlanta.

SEER2: 16.0 Cooling efficiency over a season
Below average · beats 26%
HSPF2: 7.8 Heating efficiency over a season
Below average · beats 5%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 18,900 BTU/h52% of its 47°F output
Average · beats 58%

A good fit if…

You want a choice of indoor units - 311 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.

Calculate my running cost

Details

Specifications3 ton, R-454B

General
Brand	WeatherKing
Also sold as	Ruud, Rheem, Fujitsu
Outdoor unit model	WP15AY36AJ2N
Series	W Series
Type	Central heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Two-stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	August 13, 2024
Last certified	September 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better	16.0 (range 15.2-16.0)
EER2Efficiency at 95°F outdoors	11.7-12.0
Cooling capacity	34,200 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8
Capacity at 47°F	33,200-34,200 BTU/h
Capacity at 17°F	22,600-33,200 BTU/h
Capacity at 5°F	17,300-18,900 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00-2.10
ENERGY STAR cold climate	No

Heating output as it gets colder52% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with RH2VY3621STACN at the standard test temperatures, in BTU/h:

Certified matchups311 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 311 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.
RH2VY3621STACN	-	16.0	12.0	7.8	17,800	216030724
RH2VY3621STACN	-	16.0	12.0	7.8	17,800	216030725
RH2VY3617STACN	-	16.0	12.0	7.8	17,900	216030726
RH2VY3617STACN	-	16.0	12.0	7.8	17,900	216030727
TCFY3621STANM	W801W1005A21DZ	16.0	11.7	7.8	18,200	216542892
RB2TY3621STANM	-	16.0	11.7	7.8	18,000	216533392
RF2TY3624STANS	-	16.0	11.7	7.8	18,100	216533473
RB2TY3621STANM	-	16.0	11.7	7.8	18,000	216533395
RF2TY3624STANS	-	16.0	11.7	7.8	18,100	216533476
RF2TY3624STANS	-	16.0	11.7	7.8	18,100	216533482
TCFY3621STANM	W801W1005A21UHU	16.0	11.7	7.8	18,400	216544196
TCFY3621STANM	W801W0755A21DZ	16.0	11.7	7.8	18,300	216542854
TCFY3621STANM	W801W1004A17UH	16.0	11.7	7.8	18,400	216542857
TCFY3621STANM	W801W0755A21UH	16.0	11.7	7.8	18,400	216542863
TCFY3621STANM	W802W1005A21DZ	16.0	11.7	7.8	18,200	216546638
TCFY3621STANM	W802W1005A21UH	16.0	11.7	7.8	18,300	216546640
TCFY3621STANM	W801W1005A21UHN	16.0	11.7	7.8	18,300	216543286
TCFY3621STANM	W801W1005A21UHS	16.0	11.7	7.8	18,300	216543302
TCFY3621STANM	W802W1004A17UH	16.0	11.7	7.8	18,400	216546607
TCFY3621STANM	W802W0755A21DZ	16.0	11.7	7.8	18,300	216546609
TCFY3621STANM	W802W0755A21UH	16.0	11.7	7.8	18,400	216546614
TCFY3621STANM	W951W0705A21UHU	16.0	11.7	7.8	18,500	216543556
RH2TY3621STANN	-	16.0	11.7	7.8	17,700	216581255
RH2TY3621STANN	-	16.0	11.7	7.8	17,700	216581257
FHRNTT3617S*YTNA	-	15.2	11.7	7.8	-	215415495
WH2TY3617STANN	-	15.2	11.7	7.8	17,300	215415463
RH2TY3617STANN	-	15.2	11.7	7.8	17,300	215415476
RH2TY3617STANN	-	15.2	11.7	7.8	17,300	215415477
RCFY3617STANM	R801V0754A17DZ	15.2	11.7	7.8	18,600	215656607
RCFY3621STANM	R801V1005A21DZ	15.2	11.7	7.8	18,200	215656612
RCFY3617STANM	R801V1004A17UH	15.2	11.7	7.8	18,400	215656614
RCFY3617STANM	R801V0754A17DZ	15.2	11.7	7.8	18,600	215656615
RCFY3621STANM	R801V1005A21DZ	15.2	11.7	7.8	18,200	215656616
RCFY3621STANM	W801W0755A21DZ	15.2	11.7	7.8	18,300	215656618
RCFY3621STANM	W801W1005A21DZ	15.2	11.7	7.8	18,200	215656619
TCFY3617STANM	W801W0754A17UH	15.2	11.7	7.8	18,300	215656620
RCFY3621STANM	R801V1005A21UHS	15.2	11.7	7.8	18,300	215656621
RCFY3621STANM	R801V1005A21UHN	15.2	11.7	7.8	18,300	215656622
RCFY3617STANM	R801V0504A17UHN	15.2	11.7	7.8	18,900	215656625
RCFY3621STANM	W801W0504A17UHS	15.2	11.7	7.8	18,900	215656627
RCFY3617STANM	R801V0504A17UHS	15.2	11.7	7.8	18,900	215656628
RCFY3617STANM	R801V0704A17UH	15.2	11.7	7.8	18,700	215656629
RCFY3617STANM	R801V0503A14DZ	15.2	11.7	7.8	18,400	215656631
RCFY3617STANM	R801V0754A17UH	15.2	11.7	7.8	18,300	215656637
RCFY3617STANM	R801V0503A14DZ	15.2	11.7	7.8	18,400	215656638
RCFY3621STANM	R801V0755A21UH	15.2	11.7	7.8	18,400	215656641
RCFY3621STANM	R801V0754A17UH	15.2	11.7	7.8	18,300	215656642
RCFY3621STANM	W801W1005A21UHS	15.2	11.7	7.8	18,300	215656643
TCFY3617STANM	W801W0754A17DZ	15.2	11.7	7.8	18,600	215656644
RCFY3621STANM	R801V0754A17UH	15.2	11.7	7.8	18,300	215656646
RCFY3617STANM	W801W0503A14UH	15.2	11.7	7.8	18,600	215656647
RCFY3621STANM	R801V0755A21UH	15.2	11.7	7.8	18,400	215656648
TCFY3617STANM	W801W1004A17UH	15.2	11.7	7.8	18,400	215656650
RCFY3617STANM	R801V1004A17UH	15.2	11.7	7.8	18,400	215656651
RCFY3621STANM	R801V1005A21UHN	15.2	11.7	7.8	18,300	215656652
RCFY3617STANM	W801W0754A17UH	15.2	11.7	7.8	18,300	215656654
RCFY3617STANM	R801V0754A17UH	15.2	11.7	7.8	18,300	215656655
TCFY3617STANM	W801W0504A17UHN	15.2	11.7	7.8	18,900	215656657
RCFY3617STANM	R801V0704A17UH	15.2	11.7	7.8	18,700	215656662
RCFY3621STANM	R801V1004A17UH	15.2	11.7	7.8	18,400	215656664

Yearly running cost in 10 large cities$1,005-$2,754

Phoenix, AZ$1,248/yr
Miami, FL$1,005/yr
Houston, TX$1,119/yr
Atlanta, GA$1,146/yr
Los Angeles, CA$1,118/yr
New York, NY$2,754/yr
Chicago, IL$2,239/yr
Denver, CO$1,864/yr
Seattle, WA$1,147/yr
Minneapolis, MN$2,307/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 WeatherKing WP15AY36AJ2N?: The WeatherKing WP15AY36AJ2N is rated at up to 16.0 SEER2 and 12.0 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 311 certified matchups SEER2 ranges from 15.2-16.0.
Is the WeatherKing WP15AY36AJ2N 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 WeatherKing WP15AY36AJ2N cost to run per year?: At its rated efficiency it costs about $1,005-$2,754 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,248 in Phoenix and $2,307 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 WeatherKing WP15AY36AJ2N?: ENERGY STAR lists 311 certified combinations for this outdoor unit. The highest-rated ones use RH2VY3621STACN, RH2VY3617STACN, TCFY3621STANM.
What refrigerant does the WeatherKing WP15AY36AJ2N 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 $1,243/yrYou save $520/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 WeatherKing WP15AY36AJ2N

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: $1,243
Current system, per year: $1,763
You save per year: $520
Payback: 25.0 years
Net after 10 years: -$7,800

Cooling $752Heating $491Electricity used: 7,772 kWhSaved vs. a minimum-efficiency heat pump: $109

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

Sure SP15AY36AJ2N16.0 SEER2 · 7.8 HSPF2
WeatherMaker PH7TAN436**AA16.0 SEER2 · 7.8 HSPF2
Rheem RP15AY36AJ2N16.0 SEER2 · 7.8 HSPF2
Whirlpool WLP15AY36AJ2N16.0 SEER2 · 7.8 HSPF2
GE NS16H36SA5-**A16.0 SEER2 · 7.8 HSPF2
KERR A-KXP36TA-1 · cold climate15.8 SEER2 · 9.4 HSPF2
Friedrich FWP15AY36AJ2N16.0 SEER2 · 7.8 HSPF2
Kepler AZPN/36WAC · cold climate15.5 SEER2 · 8.6 HSPF2

See all 302 3 ton central heat pumps, ranked

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