What is the SEER2 rating of the OXBOX J5HP5018A1000AA?

The OXBOX J5HP5018A1000AA is rated at up to 15.2 SEER2 and 12.0 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the OXBOX J5HP5018A1000AA 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 1.5-ton model.

How much does the OXBOX J5HP5018A1000AA cost to run per year?

At its rated efficiency it costs about $555-$1,418 a year in electricity in large U.S. cities, depending on climate and local rates - for example $675 in Phoenix and $1,177 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 OXBOX J5HP5018A1000AA?

ENERGY STAR lists 3 certified combinations for this outdoor unit. The highest-rated ones use 5JMM5A0A24M21SA, J5AH5E36A1B00AA+TXV, J5AH5E24A1B00AA+TXV.

1.5-ton central heat pump · Oxbox-J5HP5

OXBOX J5HP5018A1000AA

Below average cooling and heating efficiency for a 1.5-ton central heat pump, but not rated for cold climates.

Ranks #169 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $600 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 7.8 Heating efficiency over a season
Below average · beats 5%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 7,500 BTU/h42% of its 47°F output
Below average · beats 20%

A good fit if…

You want a certified 1.5-ton central 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 central heat pumps.
You mainly need heat - its HSPF2 is below average for central heat pumps.
Comfort and noise matter - a single-stage compressor runs only full-on or off.

Calculate my running cost

Details

Specifications1.5 ton, R-454B

General
Brand	OXBOX
Outdoor unit model	J5HP5018A1000AA
Series	Oxbox-J5HP5
Type	Central heat pump
Nominal size	1.5 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	November 1, 2024
Last certified	March 31, 2025
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	12.0
Cooling capacity	18,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8
Capacity at 47°F	17,200-18,000 BTU/h
Capacity at 17°F	10,000-10,100 BTU/h
Capacity at 5°F	7,200-7,500 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.88-1.90
ENERGY STAR cold climate	No

Heating output as it gets colder42% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 5JMM5A0A24M21SA at the standard test temperatures, in BTU/h:

Certified matchups3 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.
5JMM5A0A24M21SA	15.2	12.0	7.8	7,200	215225479
J5AH5E36A1B00AA+TXV	15.2	12.0	7.8	7,500	215225480
J5AH5E24A1B00AA+TXV	15.2	12.0	7.8	7,500	215560307

Yearly running cost in 10 large cities$555-$1,418

Phoenix, AZ$675/yr
Miami, FL$555/yr
Houston, TX$605/yr
Atlanta, GA$600/yr
Los Angeles, CA$581/yr
New York, NY$1,418/yr
Chicago, IL$1,148/yr
Denver, CO$952/yr
Seattle, WA$583/yr
Minneapolis, MN$1,177/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 OXBOX J5HP5018A1000AA?: The OXBOX J5HP5018A1000AA is rated at up to 15.2 SEER2 and 12.0 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the OXBOX J5HP5018A1000AA 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 1.5-ton model.
How much does the OXBOX J5HP5018A1000AA cost to run per year?: At its rated efficiency it costs about $555-$1,418 a year in electricity in large U.S. cities, depending on climate and local rates - for example $675 in Phoenix and $1,177 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 OXBOX J5HP5018A1000AA?: ENERGY STAR lists 3 certified combinations for this outdoor unit. The highest-rated ones use 5JMM5A0A24M21SA, J5AH5E36A1B00AA+TXV, J5AH5E24A1B00AA+TXV.
What refrigerant does the OXBOX J5HP5018A1000AA 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 $665/yrYou save $251/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 OXBOX J5HP5018A1000AA

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: $665
Current system, per year: $917
You save per year: $251
Payback: 27.8 years
Net after 10 years: -$4,486

Cooling $417Heating $248Electricity used: 4,158 kWhSaved vs. a minimum-efficiency heat pump: $36

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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See all 170 1.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of March 31, 2025. How we use the data.