What is the SEER2 rating of the Ruud RD17AZ36AJ3N?

The Ruud RD17AZ36AJ3N is rated at up to 19.0 SEER2 and 12.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 201 certified matchups SEER2 ranges from 17.0-19.0.

Is the Ruud RD17AZ36AJ3N good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 29,800 BTU/h at 5°F with a COP of 2.30, so it is still 2.3 times as efficient as electric resistance heat at that temperature.

How much does the Ruud RD17AZ36AJ3N cost to run per year?

At its rated efficiency it costs about $851-$2,596 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,093 in Phoenix and $2,203 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 Ruud RD17AZ36AJ3N?

ENERGY STAR lists 201 certified combinations for this outdoor unit. The highest-rated ones use SH2VZ3621MTANN, FRH2VZ3621MTANN, RH2VZ3621MTANA.

What refrigerant does the Ruud RD17AZ36AJ3N use?

It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

3-ton central heat pump · VANTIX

Ruud RD17AZ36AJ3N

Very good cooling efficiency and below average heating efficiency for a 3-ton central heat pump, and certified for cold climates.

Ranks #62 of 302 3 ton central heat pumps for cooling efficiency, and costs about $1,055 a year to run in a mixed climate like Atlanta.

SEER2: 19.0 Cooling efficiency over a season
Very good · beats 85%
HSPF2: 8.5 Heating efficiency over a season
Below average · beats 38%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 29,800 BTU/h50% of its 47°F output
Very good · beats 88%

A good fit if…

You want low cooling bills - its SEER2 beats 85% of central heat pumps.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 29,800 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 201 certified pairings.

Think twice if…

You mainly need heat - its HSPF2 is below average for central heat pumps.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications3 ton, R-410A

General
Brand	Ruud
Also sold as	Sure, Friedrich, Rheem, RUSSELL
Outdoor unit model	RD17AZ36AJ3N
Series	VANTIX
Type	Central heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	Yes
On the market since	January 11, 2024
Last certified	June 3, 2026
Cooling
SEER2Seasonal efficiency, higher is better	19.0 (range 17.0-19.0)
EER2Efficiency at 95°F outdoors	10.0-12.0
Cooling capacity	34,200 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.1-8.5
Capacity at 47°F	36,000 BTU/h
Capacity at 17°F	22,800-31,600 BTU/h
Capacity at 5°F	17,800-29,800 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.90-2.30
ENERGY STAR cold climate	Yes

Heating output as it gets colder50% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with SH2VZ3621MTANN at the standard test temperatures, in BTU/h:

Certified matchups201 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 201 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.
SH2VZ3621MTANN · cold climate	-	19.0	12.0	8.5	17,900	214066453
FRH2VZ3621MTANN · cold climate	-	19.0	12.0	8.5	17,900	214066454
RH2VZ3621MTANA · cold climate	-	19.0	12.0	8.5	18,000	214066455
RH2VZ3621MTANN · cold climate	-	19.0	12.0	8.5	17,900	214066457
SH2VZ3621MTANN · cold climate	-	19.0	12.0	8.5	17,900	214066458
FRH2VZ3621MTANA · cold climate	-	19.0	12.0	8.5	18,000	214066459
RH2VZ3621MTANA · cold climate	-	19.0	12.0	8.5	18,000	214066461
SH2VZ3621MTANA · cold climate	-	19.0	12.0	8.5	18,000	214066462
SH2VZ3621MTANA · cold climate	-	19.0	12.0	8.5	18,000	214066463
RH2VZ3621MTANN · cold climate	-	19.0	12.0	8.5	17,900	214066465
RCFZ3621MTAAM · cold climate	R98MV0855A21UPS	19.0	12.0	8.5	18,100	214066500
RCFZ3621MTAAM · cold climate	R97MV1005A21DHS	19.0	12.0	8.5	18,100	214066503
TCFZ3621MTANM · cold climate	S802V1005A21DZ	18.0	12.0	8.5	17,800	214066685
TCFZ3621MTANM · cold climate	S802V1005A21DZ	18.0	12.0	8.5	17,800	214066686
RCFZ3621MTANM · cold climate	R801V1005A21DZ	18.0	12.0	8.5	17,800	214066693
RCFZ3621MTANM · cold climate	R801V1005A21DZ	18.0	12.0	8.5	17,800	214066552
RCFZ3621MTANM · cold climate	R802V1005A21DZ	18.0	12.0	8.5	17,800	214066559
RCFZ3621MTANM · cold climate	R802V1005A21DZ	18.0	12.0	8.5	17,800	214066572
TCFZ3621MTANM · cold climate	FR801V1005A21DZ	18.0	12.0	8.5	17,800	214066634
TCFZ3621MTAAM · cold climate	S962V1005A21M4S	18.0	12.0	8.5	18,100	214066480
RCFZ3621MTAAM · cold climate	R962V1005A21M4S	18.0	12.0	8.5	18,100	214066482
TCFZ3621MTAAM · cold climate	S962V1005A21M4S	18.0	12.0	8.5	18,100	214066484
RCFZ3621MTAAM · cold climate	R962V0855A21M4S	18.0	12.0	8.5	18,200	214066492
RCFZ3621MTAAM · cold climate	R962V0855A21M4S	18.0	12.0	8.5	18,200	214066499
TCFZ3621MTANM · cold climate	FR802V1005A21DZ	18.0	12.0	8.5	17,800	214066751
TCFZ3621MTANM · cold climate	S801V1005A21DZ	18.0	12.0	8.5	17,800	214066789
TCFZ3621MTANM · cold climate	S801V1005A21DZ	18.0	12.0	8.5	17,800	214066929
RH3VZ3617STACN · cold climate	-	18.0	11.7	8.5	18,100	214773105
WH3VZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773106
RH3VZ3617STACN · cold climate	-	18.0	11.7	8.5	18,100	214773107
FRH3VZ3617STACN · cold climate	-	18.0	11.7	8.5	18,100	214773108
WH3VZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773109
SH2VZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773111
RH2VZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773112
RH2VZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773113
FRH2VZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773114
SH2VZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773115
RH2TZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773117
WH2TZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773118
RH2TZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773119
FRH2TZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773120
WH2TZ3617STANN · cold climate	-	18.0	11.7	8.5	18,100	214773121
FRH2TZ3621STANN · cold climate	-	18.0	11.7	8.5	18,100	214810612
SH2CZ3621STANN · cold climate	-	18.0	11.7	8.5	18,100	214810613
SH2CZ3621STANN · cold climate	-	18.0	11.7	8.5	18,100	214810614
SH3VZ3617STACN · cold climate	-	18.0	11.7	8.5	18,100	215366206
SH3VZ3617STACN · cold climate	-	18.0	11.7	8.5	18,100	215366208
TCFZ3621MTANM · cold climate	S802V1005A21UHN	18.0	11.7	8.1	17,900	214066682
TCFZ3621MTANM · cold climate	FR801V1005A21UHS	18.0	11.7	8.1	17,900	214066687
RCFZ3621MTANM · cold climate	R801V1005A21UHN	18.0	11.7	8.1	17,900	214066691
TCFZ3621MTANM · cold climate	FR97MV1005A21DH	18.0	10.0	8.1	29,400	214066694
TCFZ3621MTANM · cold climate	S802V1005A21UHS	18.0	11.7	8.1	17,900	214066711
TCFZ3621MTANM · cold climate	FR802V1005A21UH	18.0	11.7	8.1	17,900	214066713
TCFZ3621MTANM · cold climate	FR801V1004A17UH	18.0	11.7	8.1	18,000	214066735
TCFZ3621MTANM · cold climate	S802V1005A21UHN	18.0	11.7	8.1	17,900	214066736
SH2CZ3621MTANN · cold climate	-	18.0	11.7	8.1	17,800	214066441
SH2CZ3621MTANN · cold climate	-	18.0	11.7	8.1	17,800	214066440
RH2TZ3621MTANA · cold climate	-	18.0	11.7	8.1	18,000	214066443
RH2TZ3621MTANA · cold climate	-	18.0	11.7	8.1	18,000	214066444
SH2CZ3621MTANA · cold climate	-	18.0	11.7	8.1	18,000	214066448

Yearly running cost in 10 large cities$851-$2,596

Phoenix, AZ$1,093/yr
Miami, FL$851/yr
Houston, TX$982/yr
Atlanta, GA$1,055/yr
Los Angeles, CA$1,040/yr
New York, NY$2,596/yr
Chicago, IL$2,122/yr
Denver, CO$1,776/yr
Seattle, WA$1,100/yr
Minneapolis, MN$2,203/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 Ruud RD17AZ36AJ3N?: The Ruud RD17AZ36AJ3N is rated at up to 19.0 SEER2 and 12.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 201 certified matchups SEER2 ranges from 17.0-19.0.
Is the Ruud RD17AZ36AJ3N good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 29,800 BTU/h at 5°F with a COP of 2.30, so it is still 2.3 times as efficient as electric resistance heat at that temperature.
How much does the Ruud RD17AZ36AJ3N cost to run per year?: At its rated efficiency it costs about $851-$2,596 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,093 in Phoenix and $2,203 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 Ruud RD17AZ36AJ3N?: ENERGY STAR lists 201 certified combinations for this outdoor unit. The highest-rated ones use SH2VZ3621MTANN, FRH2VZ3621MTANN, RH2VZ3621MTANA.
What refrigerant does the Ruud RD17AZ36AJ3N use?: It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

Running cost and savings

Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

Heat pump $1,108/yrYou save $685/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 Ruud RD17AZ36AJ3N

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: $1,108
Current system, per year: $1,793
You save per year: $685
Payback: 19.0 years
Net after 10 years: -$6,151

Cooling $634Heating $474Electricity used: 6,925 kWhSaved vs. a minimum-efficiency heat pump: $271

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

Lennox EL19KPV-036-230A19.0 SEER2 · 8.5 HSPF2
Sure SP18AZ36AJVC · cold climate19.0 SEER2 · 8.5 HSPF2
GREE FXE36HP230V1R32AO19.0 SEER2 · 8.5 HSPF2
Blueridge BNG2Z36SCM19.0 SEER2 · 8.3 HSPF2
Fujitsu FOP1836MJAZCA · cold climate19.0 SEER2 · 8.5 HSPF2
TOSOT TU36W-GDU19.0 SEER2 · 8.3 HSPF2
Daikin DH7VSA3610A · cold climate19.0 SEER2 · 8.8 HSPF2
Concord 7SCP18V36P-**A · cold climate18.7 SEER2 · 9.6 HSPF2

See all 302 3 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 3, 2026. How we use the data.