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      3-ton central heat pump · HSA14 Series

      Comfort-Aire HSA1436S1-**A

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

      Ranks #253 of 302 3 ton central heat pumps for cooling efficiency, and costs about $1,180 a year to run in a mixed climate like Atlanta.

      SEER2
      16.0 Cooling efficiency over a season
      Below average · beats 26%
      HSPF2
      7.8 Heating efficiency over a season
      Below average · beats 5%
      EER2
      13.4 Cooling efficiency on a 95°F day
      Excellent · beats 94%
      Heat at 5°F
      16,800 BTU/h48% of its 47°F output
      Below average · beats 39%

      A good fit if…

      • You want a choice of indoor units - 32 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 ton, R-454B
      General
      BrandComfort-Aire
      Also sold asCentury
      Outdoor unit modelHSA1436S1-**A
      SeriesHSA14 Series
      TypeCentral heat pump
      Nominal size3 ton
      CompressorVariable-speed units run longer at low powerSingle stage
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceOctober 1, 2024
      Last certifiedJune 29, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better16.0 (range 15.2-16.0)
      EER2Efficiency at 95°F outdoors12.5-13.4
      Cooling capacity36,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8
      Capacity at 47°F31,400-35,000 BTU/h
      Capacity at 17°F20,000-21,200 BTU/h
      Capacity at 5°F15,700-16,800 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.90-2.00
      ENERGY STAR cold climateNo
      Heating output as it gets colder48% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 7EH42CX-**+TDR at the standard test temperatures, in BTU/h:

      Certified matchups32 indoor units

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

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      7EH42CX-**+TDRGUH80C090C5MP*16.013.47.816,600216372716
      7EH42CX-**+TDRGUH80C090C5MP*16.013.47.816,600216372610
      7E[C,U]48CX-**+TDRGUH80C090C5MP*15.513.27.816,600216372711
      7E[C,U]48CX-**+TDRGUH80C110C5MP*15.513.47.816,600216372712
      7E[C,U]48CX-**+TDRGUH92C110C4MP*15.513.27.816,600216372713
      7EH42BX-**+TDRGUH80C070B3MP*15.513.07.816,600216372714
      7EH42CX-**+TDRGUH80C110C5MP*15.513.27.816,600216372611
      7EH42CX-**+TDRGUH92C110C4MP*15.513.27.816,400216372613
      7EH42CX-**+TDRGUH92C110C5MP*15.513.07.816,800216372614
      7EH42CX-**+TDRGUH96C090C4MP*15.513.07.816,700216372615
      7EH42CX-**+TDRGUH92C090C4MP*15.513.07.816,700216372612
      7EH42BX-**+TDRGUH80C090B4MP*15.513.27.816,600216372715
      7EH42CX-**+TDRGUH80C110C5MP*15.513.27.816,600216372717
      7EH42CX-**+TDRGUH92C090C4MP*15.513.07.816,700216372718
      7EH42CX-**+TDRGUH92C110C4MP*15.513.27.816,400216372719
      7EH42CX-**+TDRGUH92C110C5MP*15.513.07.816,800216372720
      7EH42CX-**+TDRGUH96C090C4MP*15.513.07.816,700216372721
      7E[C,U]48CX-**+TDRGUH80C090C5MP*15.513.27.816,600216372605
      7E[C,U]48CX-**+TDRGUH80C110C5MP*15.513.47.816,600216372606
      7E[C,U]48CX-**+TDRGUH92C110C4MP*15.513.27.816,600216372607
      7EH42BX-**+TDRGUH80C070B3MP*15.513.07.816,600216372608
      7EH42BX-**+TDRGUH80C090B4MP*15.513.27.816,600216372609
      7EH42CX-**+TDRGUH97T110C5MP*15.513.27.816,500216498795
      7EH42CX-**+TDRGUH97T110C5MP*15.513.27.816,500216498826
      HMA36VX1*--15.213.07.815,700216372709
      HMA36VX1*--15.213.07.815,700216372603
      7E[C,U]48CX-**+TDRGUH80X100C5MP*15.213.07.816,800216372604
      7E[C,U]48CX-**+TDRGUH80X100C5MP*15.213.07.816,800216372710
      HMA36CX1*--15.213.07.815,900217662731
      HMA36CX1*--15.213.07.815,900217662737
      HMAS42CX1S--15.212.57.816,500218499738
      HMAS42CX1S--15.212.57.816,500218499736
      Yearly running cost in 10 large cities$1,057-$2,820

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

      Questions5
      What is the SEER2 rating of the Comfort-Aire HSA1436S1-**A?
      The Comfort-Aire HSA1436S1-**A is rated at up to 16.0 SEER2 and 13.4 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 32 certified matchups SEER2 ranges from 15.2-16.0.
      Is the Comfort-Aire HSA1436S1-**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 Comfort-Aire HSA1436S1-**A cost to run per year?
      At its rated efficiency it costs about $1,057-$2,820 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,302 in Phoenix and $2,355 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 Comfort-Aire HSA1436S1-**A?
      ENERGY STAR lists 32 certified combinations for this outdoor unit. The highest-rated ones use 7EH42CX-**+TDR, 7E[C,U]48CX-**+TDR, 7EH42BX-**+TDR.
      What refrigerant does the Comfort-Aire HSA1436S1-**A 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 $1,292/yrYou save $545/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 Comfort-Aire HSA1436S1-**A
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,292
      Current system, per year
      $1,837
      You save per year
      $545
      Payback
      24.8 years
      Net after 10 years
      -$8,051

      Cooling $792Heating $500Electricity used: 8,073 kWhSaved vs. a minimum-efficiency heat pump: $114

      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 June 29, 2026. How we use the data.