What is the SEER2 rating of the Mitsubishi Electric PUZ-AH24NL2?

The Mitsubishi Electric PUZ-AH24NL2 is rated at up to 22.6 SEER2 and 13.2 EER2 for cooling and up to 9.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 13 certified matchups SEER2 ranges from 17.8-22.6.

Is the Mitsubishi Electric PUZ-AH24NL2 good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 13,500 BTU/h at 5°F with a COP of 2.10, so it is still 2.1 times as efficient as electric resistance heat at that temperature.

How much does the Mitsubishi Electric PUZ-AH24NL2 cost to run per year?

At its rated efficiency it costs about $491-$1,604 a year in electricity in large U.S. cities, depending on climate and local rates - for example $646 in Phoenix and $1,371 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 Mitsubishi Electric PUZ-AH24NL2?

ENERGY STAR lists 13 certified combinations for this outdoor unit. The highest-rated ones use PLA-AE24NL, PKA-AK24NL, PCA-AK24NL.

24,000 BTU mini-split heat pump · P series

Mitsubishi Electric PUZ-AH24NL2

Average cooling efficiency and below average heating efficiency for a 24,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #130 of 430 24,000 BTU mini-splits for cooling efficiency, and costs about $643 a year to run in a mixed climate like Atlanta.

SEER2: 22.6 Cooling efficiency over a season
Average · beats 57%
HSPF2: 9.8 Heating efficiency over a season
Below average · beats 33%
EER2: 13.2 Cooling efficiency on a 95°F day
Average · beats 69%
Heat at 5°F: 13,500 BTU/h44% of its 47°F output
Average · beats 67%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 13,500 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 13 certified pairings.

Think twice if…

You mainly need heat - its HSPF2 is below average for mini-splits.

Calculate my running cost

Details

Specifications24,000 BTU, R-454B

General
Brand	Mitsubishi Electric
Outdoor unit model	PUZ-AH24NL2
Series	P series
Type	Mini-split heat pump
Nominal size	24,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	October 1, 2026
Last certified	August 11, 2026
Cooling
SEER2Seasonal efficiency, higher is better	22.6 (range 17.8-22.6)
EER2Efficiency at 95°F outdoors	12.0-13.2
Cooling capacity	18,000-24,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.7-9.8
Capacity at 47°F	19,000-26,000 BTU/h
Capacity at 17°F	10,200-15,700 BTU/h
Capacity at 5°F	11,500-13,500 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80-2.10
ENERGY STAR cold climate	Yes

Heating output as it gets colder44% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with PLA-AE24NL at the standard test temperatures, in BTU/h:

Certified matchups13 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.
PLA-AE24NL	22.6	13.2	9.8	11,500	218696976
PKA-AK24NL	21.1	12.0	9.2	11,600	218696977
PCA-AK24NL	20.2	12.0	9.3	11,600	218696978
PEAD-AA24NL	19.6	12.0	9.1	11,500	218696979
PVA-AA24NL	19.2	12.0	8.9	11,500	218696980
PAA-BA18NL · cold climate	17.9	12.8	8.8	13,300	218696984
PAA-BA18NL · cold climate	17.9	12.8	8.8	13,300	218696983
PAA-AA18NL · cold climate	17.9	12.8	8.8	13,300	218696982
PAA-AA18NL · cold climate	17.9	12.8	8.8	13,300	218696981
PAA-BA24NL	17.8	12.0	8.7	13,500	218696988
PAA-BA24NL	17.8	12.0	8.7	13,500	218696987
PAA-AA24NL	17.8	12.0	8.7	13,500	218696986
PAA-AA24NL	17.8	12.0	8.7	13,500	218696985

Yearly running cost in 10 large cities$491-$1,604

Phoenix, AZ$646/yr
Miami, FL$491/yr
Houston, TX$580/yr
Atlanta, GA$643/yr
Los Angeles, CA$638/yr
New York, NY$1,604/yr
Chicago, IL$1,315/yr
Denver, CO$1,104/yr
Seattle, WA$687/yr
Minneapolis, MN$1,371/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 Mitsubishi Electric PUZ-AH24NL2?: The Mitsubishi Electric PUZ-AH24NL2 is rated at up to 22.6 SEER2 and 13.2 EER2 for cooling and up to 9.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 13 certified matchups SEER2 ranges from 17.8-22.6.
Is the Mitsubishi Electric PUZ-AH24NL2 good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 13,500 BTU/h at 5°F with a COP of 2.10, so it is still 2.1 times as efficient as electric resistance heat at that temperature.
How much does the Mitsubishi Electric PUZ-AH24NL2 cost to run per year?: At its rated efficiency it costs about $491-$1,604 a year in electricity in large U.S. cities, depending on climate and local rates - for example $646 in Phoenix and $1,371 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 Mitsubishi Electric PUZ-AH24NL2?: ENERGY STAR lists 13 certified combinations for this outdoor unit. The highest-rated ones use PLA-AE24NL, PKA-AK24NL, PCA-AK24NL.
What refrigerant does the Mitsubishi Electric PUZ-AH24NL2 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 $662/yrYou save $588/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 Mitsubishi Electric PUZ-AH24NL2

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: $662
Current system, per year: $1,249
You save per year: $588
Payback: 15.3 years
Net after 10 years: -$3,125

Cooling $364Heating $297Electricity used: 4,135 kWhSaved vs. a minimum-efficiency heat pump: $303

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 24,000 BTU models

Fujitsu AOUH24LMAS1 · cold climate22.5 SEER2 · 11.4 HSPF2
MRCOOL DIYP-24-HP-C-230DE11-O22.7 SEER2 · 9.5 HSPF2
ROVSUN RVC-24/O · cold climate22.5 SEER2 · 10.4 HSPF2
MRCOOL DIY-24-HP-C-230D25-O · cold climate22.7 SEER2 · 9.5 HSPF2
DELLA 048-TPH-24K2V-23S-OUT · cold climate22.5 SEER2 · 10.0 HSPF2
InfinityLiving EZ-24ZPL-HP230B22.7 SEER2 · 9.5 HSPF2
MDV M3OX430-27HFN8-M1 · cold climate22.5 SEER2 · 10.0 HSPF2
TCL TSH24HEI2NAN0T24U · cold climate22.5 SEER2 · 10.0 HSPF2

See all 430 24,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of August 11, 2026. How we use the data.