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      3.5-ton central heat pump · VANTIX

      Sure SP15AY42AJ2N

      Below average cooling and heating efficiency for a 3.5-ton central heat pump, and certified for cold climates.

      Ranks #81 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,308 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
      11.7 Cooling efficiency on a 95°F day
      Average · beats 43%
      Heat at 5°F
      19,300 BTU/h47% of its 47°F output
      Average · beats 58%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 19,300 BTU/h at 5°F.
      • You want a choice of indoor units - 132 certified pairings.

      Think twice if…

      • 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.

      Calculate my running cost

      Details

      Specifications3.5 ton, R-454B
      General
      BrandSure
      Also sold asRUSSELL
      Outdoor unit modelSP15AY42AJ2N
      SeriesVANTIX
      TypeCentral heat pump
      Nominal size3.5 ton
      CompressorVariable-speed units run longer at low powerTwo-stage
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceAugust 6, 2024
      Last certifiedApril 9, 2025
      Cooling
      SEER2Seasonal efficiency, higher is better16.0 (range 15.2-16.0)
      EER2Efficiency at 95°F outdoors11.7-12.0
      Cooling capacity40,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8-8.1
      Capacity at 47°F40,000 BTU/h
      Capacity at 17°F27,000-40,000 BTU/h
      Capacity at 5°F18,400-19,300 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.00-2.10
      ENERGY STAR cold climateYes
      Heating output as it gets colder47% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with TCFY4821STANM at the standard test temperatures, in BTU/h:

      Certified matchups132 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 132 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      TCFY4821STANM · cold climateS801V0755A21UH16.011.78.118,900215655136
      TCFY4824STANM · cold climateS801V1255A24DZ16.011.78.118,700215655146
      TCFY4824STANM · cold climateS802V1255A24UH16.011.78.118,800215655147
      TCFY4821STANM · cold climateS801V0754A17DZ16.011.78.119,300215655149
      TCFY4824STANM · cold climateS801V1255A24DZ16.011.78.118,700215655153
      TCFY4821STANM · cold climateS801V0704A17UH16.011.78.119,300215655157
      TCFY4821STANM · cold climateS802V0754A17UH16.011.78.118,800215655158
      TCFY4821STANM · cold climateS802V0754A17UH16.011.78.118,800215655164
      TCFY4821STANM · cold climateS802V1005A21UH16.011.78.118,800215655166
      TCFY4824STANM · cold climateS802V1255A24UH16.011.78.118,800215655169
      TCFY4821STANM · cold climateS802V1005A21UH16.011.78.118,800215655172
      TCFY4821STANM · cold climateS802V0755A21DZ16.011.78.118,800215655181
      TCFY4821STANM · cold climateS802V0755A21DZ16.011.78.118,800215655189
      TCFY4821STANM · cold climateS801V0755A21DZ16.011.78.118,800215655198
      TCFY4824STANM · cold climateS801V0755A21DZ16.011.78.118,800215655199
      TCFY4824STANM · cold climateS801V0755A21DZ16.011.78.118,800215655205
      TCFY4821STANM · cold climateS802V0754A17DZ16.011.78.119,300215655214
      TCFY4821STANM · cold climateS802V0754A17DZ16.011.78.119,300215655224
      TCFY4821STANM · cold climateS801V1005A21DZ16.011.78.118,700215655229
      TCFY4821STANM · cold climateS801V1005A21DZ16.011.78.118,700215655227
      TCFY4824STANM · cold climateS802V1005A21UH16.011.78.118,800215655243
      TCFY4821STANM · cold climateS801V0755A21DZ16.011.78.118,800215655247
      TCFY4821STANM · cold climateS801V1005A21UHS16.011.78.118,800215655256
      TCFY4821STANM · cold climateS801V1005A21UHN16.011.78.118,800215655267
      TCFY4824STANM · cold climateS801V1005A21UHN16.011.78.118,800215655281
      TCFY4821STANM · cold climateS801V1005A21UHN16.011.78.118,800215655284
      TCFY4821STANM · cold climateS802V0755A21UH16.011.78.118,900215655290
      TCFY4821STANM · cold climateS802V1005A21DZ16.011.78.118,700215655294
      TCFY4824STANM · cold climateS802V0755A21DZ16.011.78.118,800215655296
      TCFY4821STANM · cold climateS801V0704A17UH16.011.78.119,300215655295
      TCFY4824STANM · cold climateS802V1005A21UH16.011.78.118,800215655300
      TCFY4824STANM · cold climateS801V1005A21UHN16.011.78.118,800215655301
      TCFY4824STANM · cold climateS802V0755A21DZ16.011.78.118,800215655303
      TCFY4824STANM · cold climateS802V0755A21UH16.011.78.118,900215655302
      TCFY4824STANM · cold climateS802V0755A21UH16.011.78.118,900215655308
      TCFY4824STANM · cold climateS801V1005A21UHS16.011.78.118,800215655313
      TCFY4821STANM · cold climateS802V0755A21UH16.011.78.118,900215655318
      TCFY4824STANM · cold climateS801V1005A21UHS16.011.78.118,800215655323
      TCFY4821STANM · cold climateS801V1005A21UHS16.011.78.118,800215655324
      TCFY4824STANM · cold climateS801V1505A24UH16.011.78.118,800215655330
      TCFY4821STANM · cold climateS802V1005A21DZ16.011.78.118,700215655338
      TCFY4824STANM · cold climateS801V1005A21DZ16.011.78.118,700215655364
      TCFY4824STANM · cold climateS801V1505A24UH16.011.78.118,800215655369
      TCFY4824STANM · cold climateS801V1255A24UH16.011.78.118,800215655375
      TCFY4824STANM · cold climateS801V1255A24UH16.011.78.118,800215655376
      TCFY4821STANM · cold climateS802V1004A17UH16.011.78.119,000215655385
      TCFY4824STANM · cold climateS802V1255A24DZ16.011.78.118,700215655388
      TCFY4824STANM · cold climateS802V1255A24DZ16.011.78.118,700215655391
      TCFY4821STANM · cold climateS802V1004A17UH16.011.78.119,000215655397
      TCFY4821STANM · cold climateS801V1004A17UH16.011.78.119,000215655403
      TCFY4821STANM · cold climateS801V1004A17UH16.011.78.119,000215655408
      TCFY4824STANM · cold climateS801V1005A21UHU16.011.78.118,800215655411
      TCFY4821STANM · cold climateS801V1005A21UHU16.011.78.118,800215655414
      TCFY4821STANM · cold climateS801V1005A21UHU16.011.78.118,800215655415
      TCFY4824STANM · cold climateS802V1505A24UH16.011.78.118,800215655472
      TCFY4821STANM · cold climateS801V0754A17UH16.011.78.118,800215655473
      TCFY4821STANM · cold climateS801V0754A17DZ16.011.78.119,300215655475
      TCFY4824STANM · cold climateS801V1005A21DZ16.011.78.118,700215655479
      TCFY4821STANM · cold climateS801V0754A17UH16.011.78.118,800215655482
      TCFY4821STANM · cold climateS801V0755A21UH16.011.78.118,900215655483
      Yearly running cost in 10 large cities$1,175-$3,124

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

      Questions5
      What is the SEER2 rating of the Sure SP15AY42AJ2N?
      The Sure SP15AY42AJ2N is rated at up to 16.0 SEER2 and 11.7 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 132 certified matchups SEER2 ranges from 15.2-16.0.
      Is the Sure SP15AY42AJ2N good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 19,300 BTU/h at 5°F with a COP of 2.10, so it is still 2.1 times as efficient as electric resistance heat at that temperature.
      How much does the Sure SP15AY42AJ2N cost to run per year?
      At its rated efficiency it costs about $1,175-$3,124 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,446 in Phoenix and $2,608 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 Sure SP15AY42AJ2N?
      ENERGY STAR lists 132 certified combinations for this outdoor unit. The highest-rated ones use TCFY4821STANM, TCFY4824STANM.
      What refrigerant does the Sure SP15AY42AJ2N 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 $1,433/yrYou save $629/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 Sure SP15AY42AJ2N
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,433
      Current system, per year
      $2,063
      You save per year
      $629
      Payback
      23.8 years
      Net after 10 years
      -$8,706

      Cooling $880Heating $553Electricity used: 8,957 kWhSaved vs. a minimum-efficiency heat pump: $149

      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 April 9, 2025. How we use the data.