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      9,000 BTU mini-split heat pump · ACIQ Series

      1HVAC ACIQ-09Z-HP115C

      Below average cooling and heating efficiency for a 9,000 BTU mini-split heat pump, but not rated for cold climates.

      Ranks #303 of 395 9,000 BTU mini-splits for cooling efficiency, and costs about $266 a year to run in a mixed climate like Atlanta.

      SEER2
      21.5 Cooling efficiency over a season
      Below average · beats 39%
      HSPF2
      9.0 Heating efficiency over a season
      Below average · beats 10%
      EER2
      12.5 Cooling efficiency on a 95°F day
      Average · beats 44%
      Heat at 5°F
      6,500 BTU/h65% of its 47°F output
      Below average · beats 36%

      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.
      • Cooling cost matters most - its SEER2 is below average for mini-splits.
      • You mainly need heat - its HSPF2 is below average for mini-splits.

      Calculate my running cost

      Details

      Specifications9,000 BTU, R-454B
      General
      Brand1HVAC
      Also sold asACIQ
      Outdoor unit modelACIQ-09Z-HP115C
      SeriesACIQ Series
      TypeMini-split heat pump
      Nominal size9,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceOctober 15, 2024
      Last certifiedMay 6, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better21.5 (range 21.5)
      EER2Efficiency at 95°F outdoors12.5
      Cooling capacity9,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.0
      Capacity at 47°F10,000 BTU/h
      Capacity at 17°F8,000 BTU/h
      Capacity at 5°F6,500 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.96
      ENERGY STAR cold climateNo
      Heating output as it gets colder65% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with ACIQ-09W-HP115C 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 unitSEER2EER2HSPF2Heat @5°FAHRI ref.
      ACIQ-09W-HP115C21.512.59.06,500216032259
      ACIQ-09W-HP115C ACIQ21.512.59.06,500216032325
      Yearly running cost in 10 large cities$199-$668

      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-09Z-HP115C?
      The 1HVAC ACIQ-09Z-HP115C is rated at up to 21.5 SEER2 and 12.5 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the 1HVAC ACIQ-09Z-HP115C 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 9,000 BTU model.
      How much does the 1HVAC ACIQ-09Z-HP115C cost to run per year?
      At its rated efficiency it costs about $199-$668 a year in electricity in large U.S. cities, depending on climate and local rates - for example $264 in Phoenix and $573 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-09Z-HP115C?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use ACIQ-09W-HP115C, ACIQ ACIQ-09W-HP115C.
      What refrigerant does the 1HVAC ACIQ-09Z-HP115C 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 $272/yrYou save $209/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 1HVAC ACIQ-09Z-HP115C
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $272
      Current system, per year
      $480
      You save per year
      $209
      Payback
      16.8 years
      Net after 10 years
      -$1,414

      Cooling $147Heating $124Electricity used: 1,699 kWhSaved vs. a minimum-efficiency heat pump: $99

      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 9,000 BTU models

      See all 395 9,000 BTU mini-splits, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 6, 2026. How we use the data.