What is the SEER2 rating of the ZERO ZSOU-24HDG-HYPER?

The ZERO ZSOU-24HDG-HYPER is rated at up to 18.0 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 ZERO ZSOU-24HDG-HYPER 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 2-ton model.

How much does the ZERO ZSOU-24HDG-HYPER cost to run per year?

At its rated efficiency it costs about $630-$1,897 a year in electricity in large U.S. cities, depending on climate and local rates - for example $806 in Phoenix and $1,608 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 ZERO ZSOU-24HDG-HYPER?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses ZSVF-24HDG-HYPER.

What refrigerant does the ZERO ZSOU-24HDG-HYPER 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.

2-ton central heat pump · ZSOU Series

ZERO ZSOU-24HDG-HYPER

Average cooling efficiency and below average heating efficiency for a 2-ton central heat pump, but not rated for cold climates.

Ranks #187 of 331 2 ton central heat pumps for cooling efficiency, and costs about $773 a year to run in a mixed climate like Atlanta.

SEER2: 18.0 Cooling efficiency over a season
Average · beats 66%
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: 14,000 BTU/h56% of its 47°F output
Below average · beats 20%

A good fit if…

You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
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

Specifications2 ton, R-410A

General
Brand	ZERO
Outdoor unit model	ZSOU-24HDG-HYPER
Series	ZSOU Series
Type	Central heat pump
Nominal size	2 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	January 1, 2025
Last certified	April 22, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.0 (range 18.0)
EER2Efficiency at 95°F outdoors	11.7
Cooling capacity	24,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.1
Capacity at 47°F	25,000 BTU/h
Capacity at 17°F	17,000 BTU/h
Capacity at 5°F	14,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.90
ENERGY STAR cold climate	No

Heating output as it gets colder56% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with ZSVF-24HDG-HYPER 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.
ZSVF-24HDG-HYPER	18.0	11.7	8.1	14,000	217493443

Yearly running cost in 10 large cities$630-$1,897

Phoenix, AZ$806/yr
Miami, FL$630/yr
Houston, TX$724/yr
Atlanta, GA$773/yr
Los Angeles, CA$761/yr
New York, NY$1,897/yr
Chicago, IL$1,550/yr
Denver, CO$1,296/yr
Seattle, WA$803/yr
Minneapolis, MN$1,608/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 ZERO ZSOU-24HDG-HYPER?: The ZERO ZSOU-24HDG-HYPER is rated at up to 18.0 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 ZERO ZSOU-24HDG-HYPER 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 2-ton model.
How much does the ZERO ZSOU-24HDG-HYPER cost to run per year?: At its rated efficiency it costs about $630-$1,897 a year in electricity in large U.S. cities, depending on climate and local rates - for example $806 in Phoenix and $1,608 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 ZERO ZSOU-24HDG-HYPER?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses ZSVF-24HDG-HYPER.
What refrigerant does the ZERO ZSOU-24HDG-HYPER 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 $815/yrYou save $439/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 ZERO ZSOU-24HDG-HYPER

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: $815
Current system, per year: $1,254
You save per year: $439
Payback: 20.5 years
Net after 10 years: -$4,611

Cooling $469Heating $346Electricity used: 5,094 kWhSaved vs. a minimum-efficiency heat pump: $149

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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Johnson Controls HL19B242118.0 SEER2 · 7.8 HSPF2
York YD536E2D11 · cold climate18.0 SEER2 · 8.5 HSPF2
York YZT24B2118.0 SEER2 · 7.8 HSPF2
York YD524E2D11 · cold climate18.0 SEER2 · 8.5 HSPF2
UTL UCHA-24HFDCSN4 · cold climate17.8 SEER2 · 9.5 HSPF2

See all 331 2 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of April 22, 2026. How we use the data.