What is the SEER2 rating of the 1HVAC ACIQ-60-EHPD?

The 1HVAC ACIQ-60-EHPD is rated at up to 15.2 SEER2 and 8.6 EER2 for cooling and up to 8.4 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the 1HVAC ACIQ-60-EHPD good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.

How much does the 1HVAC ACIQ-60-EHPD cost to run per year?

At its rated efficiency it costs about $1,665-$4,138 a year in electricity in large U.S. cities, depending on climate and local rates - for example $2,009 in Phoenix and $3,424 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 1HVAC ACIQ-60-EHPD?

ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated one uses ACIQ-60-AHD.

4-ton central heat pump · ACIQ Series

1HVAC ACIQ-60-EHPD

Below average cooling and heating efficiency for a 4-ton central heat pump, and certified for cold climates.

Ranks #294 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,762 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 8.4 Heating efficiency over a season
Below average · beats 31%
EER2: 8.6 Cooling efficiency on a 95°F day
Below average · beats 2%
Heat at 5°F: 38,000 BTU/h70% of its 47°F output
Below average · beats 5%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 38,000 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 central heat pumps.
You mainly need heat - its HSPF2 is below average for central heat pumps.

Calculate my running cost

Details

Specifications4 ton, R-454B

General
Brand	1HVAC
Also sold as	ACIQ
Outdoor unit model	ACIQ-60-EHPD
Series	ACIQ Series
Type	Central heat pump
Nominal size	4 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	October 15, 2024
Last certified	May 1, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	8.6
Cooling capacity	54,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.4
Capacity at 47°F	54,000 BTU/h
Capacity at 17°F	33,000-36,000 BTU/h
Capacity at 5°F	38,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80
ENERGY STAR cold climate	Yes

Heating output as it gets colder70% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with ACIQ-60-AHD at the standard test temperatures, in BTU/h:

Certified matchups2 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.
ACIQ-60-AHD · cold climate	15.2	8.6	8.4	38,000	216032226
ACIQ-60-AHD · cold climate	15.2	8.6	8.4	38,000	216032245

Yearly running cost in 10 large cities$1,665-$4,138

Phoenix, AZ$2,009/yr
Miami, FL$1,665/yr
Houston, TX$1,799/yr
Atlanta, GA$1,762/yr
Los Angeles, CA$1,701/yr
New York, NY$4,138/yr
Chicago, IL$3,346/yr
Denver, CO$2,770/yr
Seattle, WA$1,694/yr
Minneapolis, MN$3,424/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 1HVAC ACIQ-60-EHPD?: The 1HVAC ACIQ-60-EHPD is rated at up to 15.2 SEER2 and 8.6 EER2 for cooling and up to 8.4 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the 1HVAC ACIQ-60-EHPD good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.
How much does the 1HVAC ACIQ-60-EHPD cost to run per year?: At its rated efficiency it costs about $1,665-$4,138 a year in electricity in large U.S. cities, depending on climate and local rates - for example $2,009 in Phoenix and $3,424 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 1HVAC ACIQ-60-EHPD?: ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated one uses ACIQ-60-AHD.
What refrigerant does the 1HVAC ACIQ-60-EHPD 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 $1,971/yrYou save $814/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 1HVAC ACIQ-60-EHPD

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: $1,971
Current system, per year: $2,784
You save per year: $814
Payback: 25.2 years
Net after 10 years: -$12,362

Cooling $1,251Heating $720Electricity used: 12,316 kWhSaved vs. a minimum-efficiency heat pump: $165

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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Tempstar T5H6S48*K*AAA15.5 SEER2 · 7.8 HSPF2
Blueridge BNG2A60SCN · cold climate15.2 SEER2 · 8.4 HSPF2
Heil N5H5S48*K*AAA15.5 SEER2 · 7.8 HSPF2
Carrier 37MURAQ60AA3 · cold climate15.2 SEER2 · 8.4 HSPF2
Heil B5H6S48*K*AAA15.5 SEER2 · 7.8 HSPF2
Day & Night D5CURAH60AAK · cold climate15.2 SEER2 · 8.4 HSPF2

See all 319 4 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 1, 2026. How we use the data.