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      3-ton central heat pump · 4SHP22LX Series

      Armstrong Air 4SHP22LX136P-**A

      Excellent cooling efficiency and average heating efficiency for a 3-ton central heat pump, but not rated for cold climates.

      Ranks #32 of 302 3 ton central heat pumps for cooling efficiency, and costs about $950 a year to run in a mixed climate like Atlanta.

      SEER2
      20.0 Cooling efficiency over a season
      Excellent · beats 94%
      HSPF2
      9.0 Heating efficiency over a season
      Average · beats 54%
      EER2
      12.0 Cooling efficiency on a 95°F day
      Average · beats 64%
      Heat at 5°F
      18,300 BTU/h55% of its 47°F output
      Very good · beats 85%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 94% of central heat pumps.
      • 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 want the newest refrigerant - it uses R-410A, which is being phased down.

      Calculate my running cost

      Details

      Specifications3 ton, R-410A
      General
      BrandArmstrong Air
      Also sold asAIREASE
      Outdoor unit model4SHP22LX136P-**A
      Series4SHP22LX Series
      TypeCentral heat pump
      Nominal size3 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceMarch 13, 2023
      Last certifiedMay 27, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better20.0 (range 20.0)
      EER2Efficiency at 95°F outdoors12.0
      Cooling capacity34,200 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.0
      Capacity at 47°F33,400 BTU/h
      Capacity at 17°F22,800 BTU/h
      Capacity at 5°F18,300 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.28
      ENERGY STAR cold climateNo
      Heating output as it gets colder55% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with BCE7S36M*4X 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.
      BCE7S36M*4X20.012.09.018,300211708567
      BCE7S36M*4X20.012.09.018,300211708566
      Yearly running cost in 10 large cities$806-$2,307

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

      Questions5
      What is the SEER2 rating of the Armstrong Air 4SHP22LX136P-**A?
      The Armstrong Air 4SHP22LX136P-**A is rated at up to 20.0 SEER2 and 12.0 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 Armstrong Air 4SHP22LX136P-**A 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 3-ton model.
      How much does the Armstrong Air 4SHP22LX136P-**A cost to run per year?
      At its rated efficiency it costs about $806-$2,307 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,015 in Phoenix and $1,943 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 Armstrong Air 4SHP22LX136P-**A?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated one uses BCE7S36M*4X.
      What refrigerant does the Armstrong Air 4SHP22LX136P-**A 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 $1,018/yrYou save $733/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 Armstrong Air 4SHP22LX136P-**A
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,018
      Current system, per year
      $1,750
      You save per year
      $733
      Payback
      17.7 years
      Net after 10 years
      -$5,672

      Cooling $602Heating $416Electricity used: 6,360 kWhSaved vs. a minimum-efficiency heat pump: $323

      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 3 ton models

      See all 302 3 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 27, 2026. How we use the data.