What is the SEER2 rating of the Rheem RHPXZS048AJT?

The Rheem RHPXZS048AJT is rated at up to 15.2 SEER2 and 11.5 EER2 for cooling and up to 7.2 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Rheem RHPXZS048AJT 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 4-ton model.

How much does the Rheem RHPXZS048AJT cost to run per year?

At its rated efficiency it costs about $1,454-$3,936 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,799 in Phoenix and $3,294 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

What refrigerant does the Rheem RHPXZS048AJT 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.

4-ton packaged heat pump · RHPXZS

Rheem RHPXZS048AJT

Below average cooling and heating efficiency for a 4-ton packaged heat pump, but not rated for cold climates.

Ranks #16 of 17 4 ton packaged heat pumps for cooling efficiency, and costs about $1,642 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 24%
HSPF2: 7.2 Heating efficiency over a season
Below average · beats 25%
EER2: 11.5 Cooling efficiency on a 95°F day
Average · beats 60%
Heat at 5°F: - Not reported by the maker

A good fit if…

You want a certified 4-ton packaged heat pump at a typical efficiency level.

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

Calculate my running cost

Details

Specifications4 ton, R-410A

General
Brand	Rheem
Also sold as	RUSSELL, Ruud, Sure, WeatherKing, Friedrich
Outdoor unit model	RHPXZS048AJT
Series	RHPXZS
Type	Packaged heat pump
Nominal size	4 ton
CompressorVariable-speed units run longer at low power	Two-stage
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	February 7, 2023
Last certified	June 3, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	11.5
Cooling capacity	47,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.2
Capacity at 47°F	45,000 BTU/h
Capacity at 17°F	29,000 BTU/h
Capacity at 5°F	-
COP at 5°F2.0 = twice as efficient as a space heater	-
ENERGY STAR cold climate	No

Heating output as it gets colder

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

Certified matchups6 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.
-	15.2	11.5	7.2	-	213880909
-	15.2	11.5	7.2	-	213880929
-	15.2	11.5	7.2	-	213880930
-	15.2	11.5	7.2	-	213880931
-	15.2	11.5	7.2	-	213880932
-	15.2	11.5	7.2	-	213880933

Yearly running cost in 10 large cities$1,454-$3,936

Phoenix, AZ$1,799/yr
Miami, FL$1,454/yr
Houston, TX$1,613/yr
Atlanta, GA$1,642/yr
Los Angeles, CA$1,600/yr
New York, NY$3,936/yr
Chicago, IL$3,198/yr
Denver, CO$2,661/yr
Seattle, WA$1,636/yr
Minneapolis, MN$3,294/yr

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

Questions4

What is the SEER2 rating of the Rheem RHPXZS048AJT?: The Rheem RHPXZS048AJT is rated at up to 15.2 SEER2 and 11.5 EER2 for cooling and up to 7.2 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Rheem RHPXZS048AJT 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 4-ton model.
How much does the Rheem RHPXZS048AJT cost to run per year?: At its rated efficiency it costs about $1,454-$3,936 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,799 in Phoenix and $3,294 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
What refrigerant does the Rheem RHPXZS048AJT 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 $1,788/yrYou save $602/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 Rheem RHPXZS048AJT

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: $1,788
Current system, per year: $2,391
You save per year: $602
Payback: 29.1 years
Net after 10 years: -$11,477

Cooling $1,088Heating $700Electricity used: 11,178 kWhSaved vs. a minimum-efficiency heat pump: $41

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 4 ton models

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Carrier 50NR-B48---3015.2 SEER2 · 7.2 HSPF2
Trane 5DCZ5048A115.2 SEER2 · 8.1 HSPF2
American Standard 5WCZ5048A115.2 SEER2 · 8.1 HSPF2
Tempstar PHR548000K***K115.5 SEER2 · 7.2 HSPF2
Carrier 50VR-K48---3015.5 SEER2 · 7.2 HSPF2
Daikin DHH0481********A16.8 SEER2 · 7.7 HSPF2

See all 17 4 ton packaged heat pumps, ranked

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