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      2-ton central heat pump · ACIQ series

      PolarWave ACIQ-24-EHPB

      Average cooling efficiency and excellent heating efficiency for a 2-ton central heat pump, and certified for cold climates.

      Ranks #216 of 331 2 ton central heat pumps for cooling efficiency, and costs about $699 a year to run in a mixed climate like Atlanta.

      SEER2
      17.0 Cooling efficiency over a season
      Average · beats 49%
      HSPF2
      10.2 Heating efficiency over a season
      Excellent · beats 91%
      EER2
      10.5 Cooling efficiency on a 95°F day
      Below average · beats 17%
      Heat at 5°F
      19,400 BTU/h75% of its 47°F output
      Excellent · beats 91%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 19,400 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 91% of central heat pumps.
      • You want steady temperatures and quiet running - the compressor varies its speed.
      • You want a choice of indoor units - 15 certified pairings.

      Think twice if…

      • You want the newest refrigerant - it uses R-410A, which is being phased down.

      Calculate my running cost

      Details

      Specifications2 ton, R-410A
      General
      BrandPolarWave
      Also sold asSTEALTH, DIYCOOL, ACIQ, 1HVAC
      Outdoor unit modelACIQ-24-EHPB
      SeriesACIQ series
      TypeCentral heat pump
      Nominal size2 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceApril 26, 2023
      Last certifiedJune 9, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better17.0 (range 15.7-17.0)
      EER2Efficiency at 95°F outdoors10.0-10.5
      Cooling capacity24,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.2-10.2
      Capacity at 47°F25,600-26,000 BTU/h
      Capacity at 17°F19,500-22,000 BTU/h
      Capacity at 5°F18,500-19,400 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.10-2.33
      ENERGY STAR cold climateYes
      Heating output as it gets colder75% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with ACIQ-24W-WM at the standard test temperatures, in BTU/h:

      Certified matchups15 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 unitSEER2EER2HSPF2Heat @5°FAHRI ref.
      ACIQ-24W-WM · cold climate17.010.510.219,400213433264
      ACIQ-24W-WM · cold climate17.010.510.219,400213433283
      ACIQ-24W-WM · cold climate17.010.510.219,400213433302
      ACIQ-24W-WM · cold climate17.010.510.219,400213433226
      ACIQ-24W-WM · cold climate17.010.510.219,400213433245
      ACIQ-24-AHB · cold climate17.010.59.219,400213433238
      ACIQ-24-AHB · cold climate17.010.59.219,400213433219
      ACIQ-24-AHB · cold climate17.010.59.219,400213433257
      ACIQ-24-AHB · cold climate17.010.59.219,400213433276
      ACIQ-24-AHB · cold climate17.010.59.219,400213433295
      ACIQ-24-ACL · cold climate15.710.09.818,500212394339
      ACIQ-24-ACL · cold climate15.710.09.818,500212394350
      ACIQ-24-ACL · cold climate15.710.09.818,500212394328
      ACIQ-24-ACL · cold climate15.710.09.818,500212394317
      ACIQ-24-ACL · cold climate15.710.09.818,500212394306
      Yearly running cost in 10 large cities$661-$1,642

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

      Questions5
      What is the SEER2 rating of the PolarWave ACIQ-24-EHPB?
      The PolarWave ACIQ-24-EHPB is rated at up to 17.0 SEER2 and 10.5 EER2 for cooling and up to 10.2 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 15 certified matchups SEER2 ranges from 15.7-17.0.
      Is the PolarWave ACIQ-24-EHPB good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 19,400 BTU/h at 5°F with a COP of 2.33, so it is still 2.3 times as efficient as electric resistance heat at that temperature.
      How much does the PolarWave ACIQ-24-EHPB cost to run per year?
      At its rated efficiency it costs about $661-$1,642 a year in electricity in large U.S. cities, depending on climate and local rates - for example $798 in Phoenix and $1,358 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 PolarWave ACIQ-24-EHPB?
      ENERGY STAR lists 15 certified combinations for this outdoor unit. The highest-rated ones use ACIQ-24W-WM, ACIQ-24-AHB, ACIQ-24-ACL.
      What refrigerant does the PolarWave ACIQ-24-EHPB 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 $782/yrYou save $488/yrSee details ↓
      1. Where you live
      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.

      2. The heat pump PolarWave ACIQ-24-EHPB
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $782
      Current system, per year
      $1,270
      You save per year
      $488
      Payback
      18.5 years
      Net after 10 years
      -$4,122

      Cooling $497Heating $285Electricity used: 4,890 kWhSaved vs. a minimum-efficiency heat pump: $197

      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 2 ton models

      See all 331 2 ton central heat pumps, ranked

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