What is the SEER2 rating of the Fujitsu FOP1536TJAZNA?

The Fujitsu FOP1536TJAZNA is rated at up to 15.2 SEER2 and 11.7 EER2 for cooling and up to 8.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Fujitsu FOP1536TJAZNA good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 19,400 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 Fujitsu FOP1536TJAZNA cost to run per year?

At its rated efficiency it costs about $1,055-$2,698 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,284 in Phoenix and $2,241 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Fujitsu FOP1536TJAZNA the same as the Mainline MLP15AZ36AJ2N?

Yes, as far as the certified ratings go. ENERGY STAR lists 3 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.

Which indoor units work with the Fujitsu FOP1536TJAZNA?

ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use FHRNVT3617S*ZTNA, FHRNTT3617S*ZTNA.

What refrigerant does the Fujitsu FOP1536TJAZNA 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 · F Series

Fujitsu FOP1536TJAZNA

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

Ranks #279 of 302 3 ton central heat pumps for cooling efficiency, and costs about $1,141 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 8.1 Heating efficiency over a season
Below average · beats 20%
EER2: 11.7 Cooling efficiency on a 95°F day
Average · beats 43%
Heat at 5°F: 19,400 BTU/h57% of its 47°F output
Very good · beats 88%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 19,400 BTU/h at 5°F.

Think twice if…

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.
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	Fujitsu
Also sold as	Mainline, Thermal Zone
Outdoor unit model	FOP1536TJAZNA
Series	F Series
Type	Central heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Two-stage
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	February 9, 2023
Last certified	June 3, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	11.7
Cooling capacity	34,200 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.1
Capacity at 47°F	34,200 BTU/h
Capacity at 17°F	24,400 BTU/h
Capacity at 5°F	17,500-19,400 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00-2.30
ENERGY STAR cold climate	Yes

Heating output as it gets colder57% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FHRNVT3617S*ZTNA at the standard test temperatures, in BTU/h:

Certified matchups2 indoor units

The same outdoor unit scores differently with each indoor unit. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unit	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
FHRNVT3617S*ZTNA · cold climate	15.2	11.7	8.1	19,400	212507698
FHRNTT3617S*ZTNA	15.2	11.7	7.8	17,500	211306300

Same unit, other model numbers2

These model numbers have exactly the same certified ratings and matchups as the Fujitsu FOP1536TJAZNA: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Mainline MLP15AZ36AJ2N
Thermal Zone TZPLAD1536AJN

Yearly running cost in 10 large cities$1,055-$2,698

Phoenix, AZ$1,284/yr
Miami, FL$1,055/yr
Houston, TX$1,150/yr
Atlanta, GA$1,141/yr
Los Angeles, CA$1,105/yr
New York, NY$2,698/yr
Chicago, IL$2,185/yr
Denver, CO$1,812/yr
Seattle, WA$1,110/yr
Minneapolis, MN$2,241/yr

At each state's average electricity price and the city's typical heating and cooling hours.

Questions6

What is the SEER2 rating of the Fujitsu FOP1536TJAZNA?: The Fujitsu FOP1536TJAZNA is rated at up to 15.2 SEER2 and 11.7 EER2 for cooling and up to 8.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Fujitsu FOP1536TJAZNA good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 19,400 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 Fujitsu FOP1536TJAZNA cost to run per year?: At its rated efficiency it costs about $1,055-$2,698 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,284 in Phoenix and $2,241 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Fujitsu FOP1536TJAZNA the same as the Mainline MLP15AZ36AJ2N?: Yes, as far as the certified ratings go. ENERGY STAR lists 3 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
Which indoor units work with the Fujitsu FOP1536TJAZNA?: ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use FHRNVT3617S*ZTNA, FHRNTT3617S*ZTNA.
What refrigerant does the Fujitsu FOP1536TJAZNA 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 $1,265/yrYou save $499/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 Fujitsu FOP1536TJAZNA

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: $1,265
Current system, per year: $1,763
You save per year: $499
Payback: 26.1 years
Net after 10 years: -$8,015

Cooling $792Heating $473Electricity used: 7,906 kWhSaved vs. a minimum-efficiency heat pump: $88

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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Friedrich FWP14AZ36AJ2N15.2 SEER2 · 8.1 HSPF2
Rheem RP15AZ36AJ2N · cold climate15.2 SEER2 · 8.1 HSPF2
ECOTEMP W4H7T36*K*AAA15.2 SEER2 · 8.1 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 June 3, 2026. How we use the data.