What is the SEER2 rating of the Friedrich FPHFR18A3A?

The Friedrich FPHFR18A3A is rated at up to 20.5 SEER2 and 12.5 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Friedrich FPHFR18A3A good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 13,200 BTU/h at 5°F with a COP of 2.36, so it is still 2.4 times as efficient as electric resistance heat at that temperature.

How much does the Friedrich FPHFR18A3A cost to run per year?

At its rated efficiency it costs about $413-$1,131 a year in electricity in large U.S. cities, depending on climate and local rates - for example $513 in Phoenix and $947 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Friedrich FPHFR18A3A the same as the AIR-CON ASLCI4H4S18?

Yes, as far as the certified ratings go. ENERGY STAR lists 5 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 Friedrich FPHFR18A3A?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses FRIEDRICH FPHFC18A3B.

What refrigerant does the Friedrich FPHFR18A3A 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.

18,000 BTU mini-split heat pump · Pro

Friedrich FPHFR18A3A

Below average cooling efficiency and average heating efficiency for a 18,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #374 of 465 18,000 BTU mini-splits for cooling efficiency, and costs about $470 a year to run in a mixed climate like Atlanta.

SEER2: 20.5 Cooling efficiency over a season
Below average · beats 24%
HSPF2: 10.0 Heating efficiency over a season
Average · beats 43%
EER2: 12.5 Cooling efficiency on a 95°F day
Average · beats 44%
Heat at 5°F: 13,200 BTU/h73% of its 47°F output
Excellent · beats 90%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 13,200 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Cooling cost matters most - its SEER2 is below average for mini-splits.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications18,000 BTU, R-410A

General
Brand	Friedrich
Also sold as	AIR-CON, DIAL, Westinghouse
Outdoor unit model	FPHFR18A3A
Series	Pro
Type	Mini-split heat pump
Nominal size	18,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	April 21, 2023
Last certified	June 9, 2026
Cooling
SEER2Seasonal efficiency, higher is better	20.5 (range 20.5)
EER2Efficiency at 95°F outdoors	12.5
Cooling capacity	18,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	10.0
Capacity at 47°F	18,000 BTU/h
Capacity at 17°F	12,000 BTU/h
Capacity at 5°F	13,200 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.36
ENERGY STAR cold climate	Yes

Heating output as it gets colder73% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FPHFC18A3B at the standard test temperatures, in BTU/h:

Certified matchups1 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.
FPHFC18A3B FRIEDRICH · cold climate	20.5	12.5	10.0	13,200	205104719

Same unit, other model numbers4

These model numbers have exactly the same certified ratings and matchups as the Friedrich FPHFR18A3A: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

AIR-CON ASLCI4H4S18
DIAL 18000-UNI-O
DIAL SZUN18WW230
Westinghouse WHU18SZA21S

Yearly running cost in 10 large cities$413-$1,131

Phoenix, AZ$513/yr
Miami, FL$413/yr
Houston, TX$460/yr
Atlanta, GA$470/yr
Los Angeles, CA$459/yr
New York, NY$1,131/yr
Chicago, IL$919/yr
Denver, CO$765/yr
Seattle, WA$471/yr
Minneapolis, MN$947/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 Friedrich FPHFR18A3A?: The Friedrich FPHFR18A3A is rated at up to 20.5 SEER2 and 12.5 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Friedrich FPHFR18A3A good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 13,200 BTU/h at 5°F with a COP of 2.36, so it is still 2.4 times as efficient as electric resistance heat at that temperature.
How much does the Friedrich FPHFR18A3A cost to run per year?: At its rated efficiency it costs about $413-$1,131 a year in electricity in large U.S. cities, depending on climate and local rates - for example $513 in Phoenix and $947 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Friedrich FPHFR18A3A the same as the AIR-CON ASLCI4H4S18?: Yes, as far as the certified ratings go. ENERGY STAR lists 5 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 Friedrich FPHFR18A3A?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses FRIEDRICH FPHFC18A3B.
What refrigerant does the Friedrich FPHFR18A3A 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 $511/yrYou save $417/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 Friedrich FPHFR18A3A

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: $511
Current system, per year: $928
You save per year: $417
Payback: 16.8 years
Net after 10 years: -$2,825

Cooling $309Heating $202Electricity used: 3,192 kWhSaved vs. a minimum-efficiency heat pump: $201

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 18,000 BTU models

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See all 465 18,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 9, 2026. How we use the data.