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      1.5-ton central heat pump · AVBL series

      AC Pro AOX430U-18HFN1-M

      Average cooling efficiency and very good heating efficiency for a 1.5-ton central heat pump, and certified for cold climates.

      Ranks #72 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $539 a year to run in a mixed climate like Atlanta.

      SEER2
      17.0 Cooling efficiency over a season
      Average · beats 49%
      HSPF2
      9.5 Heating efficiency over a season
      Very good · beats 70%
      EER2
      12.4 Cooling efficiency on a 95°F day
      Very good · beats 76%
      Heat at 5°F
      18,000 BTU/h95% of its 47°F output
      Below average · beats 39%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 18,000 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 70% of central heat pumps.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

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

      Calculate my running cost

      Details

      Specifications1.5 ton, R-410A
      General
      BrandAC Pro
      Outdoor unit modelAOX430U-18HFN1-M
      SeriesAVBL series
      TypeCentral heat pump
      Nominal size1.5 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceOctober 1, 2023
      Last certifiedApril 22, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better17.0 (range 17.0)
      EER2Efficiency at 95°F outdoors12.4
      Cooling capacity18,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.5
      Capacity at 47°F19,000 BTU/h
      Capacity at 17°F13,500 BTU/h
      Capacity at 5°F18,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.00
      ENERGY STAR cold climateYes
      Heating output as it gets colder95% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with AVBL-18HWFN1-MH3 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 unitSEER2EER2HSPF2Heat @5°FAHRI ref.
      AVBL-18HWFN1-MH3 · cold climate17.012.49.518,000217284553
      Yearly running cost in 10 large cities$497-$1,276

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

      Questions5
      What is the SEER2 rating of the AC Pro AOX430U-18HFN1-M?
      The AC Pro AOX430U-18HFN1-M is rated at up to 17.0 SEER2 and 12.4 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the AC Pro AOX430U-18HFN1-M good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 18,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
      How much does the AC Pro AOX430U-18HFN1-M cost to run per year?
      At its rated efficiency it costs about $497-$1,276 a year in electricity in large U.S. cities, depending on climate and local rates - for example $605 in Phoenix and $1,061 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 AC Pro AOX430U-18HFN1-M?
      ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses AVBL-18HWFN1-MH3.
      What refrigerant does the AC Pro AOX430U-18HFN1-M 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 $597/yrYou save $348/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 AC Pro AOX430U-18HFN1-M
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $597
      Current system, per year
      $944
      You save per year
      $348
      Payback
      20.1 years
      Net after 10 years
      -$3,522

      Cooling $373Heating $224Electricity used: 3,729 kWhSaved vs. a minimum-efficiency heat pump: $130

      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 April 22, 2026. How we use the data.