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      1.5-ton central heat pump · HSA14 Series

      Comfort-Aire HSA1418S1-**A

      Average cooling efficiency and below average heating efficiency for a 1.5-ton central heat pump, but not rated for cold climates.

      Ranks #92 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $592 a year to run in a mixed climate like Atlanta.

      SEER2
      16.5 Cooling efficiency over a season
      Average · beats 40%
      HSPF2
      7.8 Heating efficiency over a season
      Below average · beats 5%
      EER2
      14.0 Cooling efficiency on a 95°F day
      Excellent · beats 98%
      Heat at 5°F
      8,500 BTU/h46% of its 47°F output
      Below average · beats 39%

      A good fit if…

      • You want a choice of indoor units - 40 certified pairings.

      Think twice if…

      • You often see nights below 0°F - it is not cold-climate certified.
      • 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

      Specifications1.5 ton, R-454B
      General
      BrandComfort-Aire
      Also sold asCentury
      Outdoor unit modelHSA1418S1-**A
      SeriesHSA14 Series
      TypeCentral heat pump
      Nominal size1.5 ton
      CompressorVariable-speed units run longer at low powerSingle stage
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceOctober 1, 2024
      Last certifiedSeptember 30, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better16.5 (range 15.2-16.5)
      EER2Efficiency at 95°F outdoors13.0-14.0
      Cooling capacity18,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8
      Capacity at 47°F17,500-18,000 BTU/h
      Capacity at 17°F10,500-11,200 BTU/h
      Capacity at 5°F7,900-8,500 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.86-2.00
      ENERGY STAR cold climateNo
      Heating output as it gets colder46% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 7EH30AX-**+TDR at the standard test temperatures, in BTU/h:

      Certified matchups40 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.
      7EH30AX-**+TDRGUH80C045A3MP*16.514.07.88,100216372545
      7EH30AX-**+TDRGUH80C070A3MP*16.514.07.88,100216372546
      7EH30AX-**+TDRGUH80C045A3MP*16.514.07.88,100216372651
      7EH30AX-**+TDRGUH80C070A3MP*16.514.07.88,100216372652
      HMA24VX1*--16.013.87.88,400216372643
      7EH24AX-**+TDRGUH80C070A3MP*16.013.87.88,000216372647
      7EH24BX-**+TDRGUH80C070B3MP*16.013.87.88,200216372648
      7EH24BX-**+TDRGUH92C045B3MP*16.013.87.88,300216372649
      7EH24BX-**+TDRGUH92C070B3MP*16.013.87.88,300216372650
      HMA18VX1*--16.013.67.88,100216372534
      HMA18VX1*--16.013.67.88,100216372640
      7EH24AX-**+TDRGUH80C070A3MP*16.013.87.88,000216372541
      7EH24AX-**+TDRGUH80C045A3MP*16.013.87.87,900216372540
      7EH24BX-**+TDRGUH80C070B3MP*16.013.87.88,200216372542
      7EH24BX-**+TDRGUH92C070B3MP*16.013.87.88,300216372544
      7EH24BX-**+TDRGUH92C045B3MP*16.013.87.88,300216372543
      7EH24AX-**+TDRGUH80C045A3MP*16.013.87.87,900216372646
      HMA24VX1*--16.013.87.88,400216372537
      7EH24BX-**+TDRGUH97T045B3MP*16.013.67.88,200216498813
      7EH24BX-**+TDRGUH97T045B3MP*16.013.67.88,200216498782
      7EH24BX-**+TDRGUH97T070B3MP16.013.87.88,200216801497
      7EH24BX-**+TDRGUH97T070B3MP16.013.87.88,200216801527
      HMA24CX1*--16.013.87.88,200217662726
      HMA24CX1*--16.013.87.88,200217662732
      7EH24AX-**+TDRGUH80X040A3MP*15.513.67.88,000216372644
      7ED30/36BX-**+TDRGDD96C045B3MP*15.513.27.88,400216372550
      7EH24AX-**+TDRGUH80X040A3MP*15.513.67.88,000216372538
      7EH24AX-**+TDRGUH80X060A3MP*15.513.67.88,000216372539
      7ED30/36BX-**+TDRGDD92C045B3MP*15.513.27.88,400216372654
      7ED30/36BX-**+TDRGDD92C070B3MP*15.513.27.88,400216372655
      7ED30/36BX-**+TDRGDD96C045B3MP*15.513.27.88,400216372656
      7EH24AX-**+TDRGUH80X060A3MP*15.513.67.88,000216372645
      7ED30/36BX-**+TDRGDD92C045B3MP*15.513.27.88,400216372548
      7ED30/36BX-**+TDRGDD92C070B3MP*15.513.27.88,400216372549
      7ED30/36BX-**+TDRGDD80C070B3MP*15.213.07.88,400216372547
      HMA24PX1*--15.213.27.88,400216372535
      HMA24PX1*--15.213.27.88,400216372641
      7ED30/36BX-**+TDRGDD80C070B3MP*15.213.07.88,400216372653
      7ED30/36BX-**+TDRGDD96C070B4MP*15.213.07.88,500216372657
      7ED30/36BX-**+TDRGDD96C070B4MP*15.213.07.88,500216372551
      Yearly running cost in 10 large cities$514-$1,428

      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 HSA1418S1-**A?
      The Comfort-Aire HSA1418S1-**A is rated at up to 16.5 SEER2 and 14.0 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 40 certified matchups SEER2 ranges from 15.2-16.5.
      Is the Comfort-Aire HSA1418S1-**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 1.5-ton model.
      How much does the Comfort-Aire HSA1418S1-**A cost to run per year?
      At its rated efficiency it costs about $514-$1,428 a year in electricity in large U.S. cities, depending on climate and local rates - for example $641 in Phoenix and $1,199 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 HSA1418S1-**A?
      ENERGY STAR lists 40 certified combinations for this outdoor unit. The highest-rated ones use 7EH30AX-**+TDR, HMA24VX1*-, 7EH24AX-**+TDR.
      What refrigerant does the Comfort-Aire HSA1418S1-**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 $640/yrYou save $285/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 HSA1418S1-**A
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $640
      Current system, per year
      $925
      You save per year
      $285
      Payback
      24.5 years
      Net after 10 years
      -$4,147

      Cooling $384Heating $256Electricity used: 3,997 kWhSaved vs. a minimum-efficiency heat pump: $69

      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 1.5 ton models

      See all 170 1.5 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 30, 2026. How we use the data.