HVAC Rated
    Menu

      3.5-ton central heat pump · A5HP5

      RunTru A5HP5042A1

      Below average cooling and heating efficiency for a 3.5-ton central heat pump, but not rated for cold climates.

      Ranks #79 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,298 a year to run in a mixed climate like Atlanta.

      SEER2
      16.0 Cooling efficiency over a season
      Below average · beats 26%
      HSPF2
      8.1 Heating efficiency over a season
      Below average · beats 20%
      EER2
      12.0 Cooling efficiency on a 95°F day
      Average · beats 64%
      Heat at 5°F
      20,000 BTU/h49% of its 47°F output
      Very good · beats 88%

      A good fit if…

      • You want a choice of indoor units - 250 certified pairings.

      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 central heat pumps.
      • You mainly need heat - its HSPF2 is below average for central heat pumps.
      • Comfort and noise matter - a single-stage compressor runs only full-on or off.

      Calculate my running cost

      Details

      Specifications3.5 ton, R-454B
      General
      BrandRunTru
      Also sold asAmeristar
      Outdoor unit modelA5HP5042A1
      SeriesA5HP5
      TypeCentral heat pump
      Nominal size3.5 ton
      CompressorVariable-speed units run longer at low powerSingle stage
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceFebruary 19, 2024
      Last certifiedMay 7, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better16.0 (range 15.2-16.0)
      EER2Efficiency at 95°F outdoors11.7-12.0
      Cooling capacity37,800-41,500 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8-8.1
      Capacity at 47°F37,400-40,500 BTU/h
      Capacity at 17°F24,800-26,400 BTU/h
      Capacity at 5°F18,800-20,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.00-2.30
      ENERGY STAR cold climateNo
      Heating output as it gets colder49% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 5TXCC007AS3+TSTAT at the standard test temperatures, in BTU/h:

      Certified matchups250 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 250 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      5TXCC007AS3+TSTATL8V1C100U5VSB16.012.08.119,500214296566
      5TXCC007AS3+TSTATA952V100CU5SB16.012.08.119,700214296568
      5TXCC007AS3+TSTATL8V1C100U5VSB16.012.08.119,500214296567
      5TXCC007AS3+TSTATA952V100CU5SB16.012.08.119,700214296569
      5TXCC007AS3+TSTATA952V100CU5SA16.011.78.119,700214296570
      5TXCC007AS3+TSTATA952V100CU5SA16.011.78.119,700214296571
      5TXCC007AS3+TSTATA952V080CU5SB16.012.08.119,700214296572
      5TXCC007AS3+TSTATA952V080CU5SB16.012.08.119,700214296573
      5TXCC007AS3+TSTATA952V080CU5SA16.012.08.119,200214296575
      5TXCC007AS3+TSTATA952V080CU5SA16.012.08.119,200214296574
      5TXCD010AS3+TSTATA952V120DU5SA16.012.08.118,900214296595
      5TXCD010AS3+TSTATA952V120DU5SB16.012.08.119,400214296596
      5TXCD010AS3+TSTATA952V120DU5SA16.012.08.118,900214296594
      5TXCD010AS3+TSTATA952V120DU5SB16.012.08.119,400214296597
      A5AHV004A1D3+TDR+TSTAT-16.012.08.119,100214296606
      A5AHV004A1D3+TDR+TSTAT-16.012.08.119,100214296607
      A5AHV006A1D3+TDR+TSTAT-16.012.08.119,400214296609
      A5AHV006A1D3+TDR+TSTAT-16.012.08.119,400214296608
      A5AHV007A1D3+TDR+TSTAT-16.012.08.119,400214296611
      A5AHV007A1D3+TDR+TSTAT-16.012.08.119,400214296610
      A5AHV005A1D3+TDR+TSTAT-16.012.08.119,100215611106
      A5AHV005A1D3+TDR+TSTAT-16.012.08.119,100215611107
      5TXCC009AS3+TSTATA801X080CM5TD16.012.08.119,200215575503
      5TXCC009AS3+TSTATA951X100CU5SA16.012.08.119,500215575504
      5TXCC009AS3+TSTATA951X100CU5SA16.012.08.119,500215575505
      5TXCC009AS3+TSTATA952V100CU5SB16.012.08.119,200215575506
      5TXCC009AS3+TSTATA952V100CU5SB16.012.08.119,200215575507
      5TXCC009AS3+TSTATL8V1C100U5VSB16.012.08.119,100215575508
      5TXCC009AS3+TSTATL8V1C100U5VSB16.012.08.119,100215575509
      5TXCD008AS3+TSTAT+P0V0D000M50SD-16.012.08.119,200215575516
      5TXCD008AS3+TSTAT+P0V0D000M50SD-16.012.08.119,200215575517
      5TXCD008AS3+TSTATA952V120DU5SB16.012.08.119,500215575518
      5TXCD008AS3+TSTATA952V120DU5SB16.012.08.119,500215575519
      5TXCD008AS3+TSTATA951X120DU5SA16.012.08.119,300215575520
      5TXCD008AS3+TSTATA951X120DU5SA16.012.08.119,300215575521
      5TXCD008AS3+TSTATA801X120DM5TD16.012.08.119,600215575522
      5TXCD008AS3+TSTATA801X120DM5TD16.012.08.119,600215575523
      5TXCD008AS3+TSTATA801X120DM5SD16.012.08.119,600215575524
      5TXCD008AS3+TSTATA801X120DM5SD16.012.08.119,600215575525
      5PX*C007AS3+TSTATA801X080CM5TD16.012.08.119,300215575330
      5PX*C007AS3+TSTATA801X080CM5TD16.012.08.119,300215575331
      5PX*C007AS3+TSTATA801X100CM5SD16.012.08.119,400215575332
      5PX*C007AS3+TSTATA801X100CM5SD16.012.08.119,400215575333
      5PX*C007AS3+TSTAT+P0V0C000M50SD-16.012.08.119,400215575334
      5PX*C007AS3+TSTAT+P0V0C000M50SD-16.012.08.119,400215575335
      5PX*C007AS3+TSTATL8V1C100U5VSB16.012.08.119,600215575340
      5PX*C007AS3+TSTATL8V1C100U5VSB16.012.08.119,600215575341
      5PX*C007AS3+TSTATA952V080CU5SB16.012.08.119,400215575344
      5PX*C007AS3+TSTATA801X100CM5TD16.012.08.119,400215575346
      5PX*C007AS3+TSTATA952V080CU5SB16.012.08.119,400215575345
      5PX*C007AS3+TSTATA801X100CM5TD16.012.08.119,400215575347
      5PX*C007AS3+TSTATA801X080CM5SD16.012.08.119,300215575348
      5PX*C007AS3+TSTATA801X080CM5SD16.012.08.119,300215575349
      5PX*C007AS3+TSTATA952V100CU5SB16.012.08.119,200215575350
      5PX*C007AS3+TSTATA952V100CU5SB16.012.08.119,200215575351
      5PX*C009AS3+TSTATA801X080CM5SD16.012.08.119,200215575352
      5PX*C009AS3+TSTATA801X080CM5SD16.012.08.119,200215575353
      5PX*C009AS3+TSTATA801X080CM5TD16.012.08.119,200215575354
      5PX*C009AS3+TSTATA801X080CM5TD16.012.08.119,200215575355
      5PX*C009AS3+TSTATA801X100CM5SD16.012.08.119,600215575356
      Yearly running cost in 10 large cities$1,174-$3,092

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

      Questions5
      What is the SEER2 rating of the RunTru A5HP5042A1?
      The RunTru A5HP5042A1 is rated at up to 16.0 SEER2 and 12.0 EER2 for cooling and up to 8.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 250 certified matchups SEER2 ranges from 15.2-16.0.
      Is the RunTru A5HP5042A1 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 3.5-ton model.
      How much does the RunTru A5HP5042A1 cost to run per year?
      At its rated efficiency it costs about $1,174-$3,092 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,441 in Phoenix and $2,578 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 RunTru A5HP5042A1?
      ENERGY STAR lists 250 certified combinations for this outdoor unit. The highest-rated ones use 5TXCC007AS3+TSTAT, 5TXCD010AS3+TSTAT, A5AHV004A1D3+TDR+TSTAT.
      What refrigerant does the RunTru A5HP5042A1 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 $1,426/yrYou save $628/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 RunTru A5HP5042A1
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,426
      Current system, per year
      $2,054
      You save per year
      $628
      Payback
      23.9 years
      Net after 10 years
      -$8,719

      Cooling $880Heating $546Electricity used: 8,914 kWhSaved vs. a minimum-efficiency heat pump: $148

      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 3.5 ton models

      See all 138 3.5 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 7, 2026. How we use the data.