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      5-ton central heat pump · 2-STAGE 18 SEER HP

      Grandaire W5H8T60*K*AAA

      Average cooling efficiency and below average heating efficiency for a 5-ton central heat pump, but not rated for cold climates.

      Ranks #30 of 100 5 ton central heat pumps for cooling efficiency, and costs about $1,737 a year to run in a mixed climate like Atlanta.

      SEER2
      17.5 Cooling efficiency over a season
      Average · beats 58%
      HSPF2
      8.5 Heating efficiency over a season
      Below average · beats 38%
      EER2
      13.0 Cooling efficiency on a 95°F day
      Very good · beats 89%
      Heat at 5°F
      31,600 BTU/h53% of its 47°F output
      Excellent · beats 92%

      A good fit if…

      • You want a choice of indoor units - 70 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.

      Calculate my running cost

      Details

      Specifications5 ton, R-454B
      General
      BrandGrandaire
      Also sold asECOTEMP
      Outdoor unit modelW5H8T60*K*AAA
      Series2-STAGE 18 SEER HP
      TypeCentral heat pump
      Nominal size5 ton
      CompressorVariable-speed units run longer at low powerTwo-stage
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceNovember 4, 2024
      Last certifiedSeptember 15, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better17.5 (range 16.0-17.5)
      EER2Efficiency at 95°F outdoors11.7-13.0
      Cooling capacity54,000-58,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.0-8.5
      Capacity at 47°F56,500-61,500 BTU/h
      Capacity at 17°F36,200-38,500 BTU/h
      Capacity at 5°F29,600-31,600 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.14-2.34
      ENERGY STAR cold climateNo
      Heating output as it gets colder53% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with WCGL605*D at the standard test temperatures, in BTU/h:

      Certified matchups70 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 70 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      WCGL605*D-17.513.08.130,200215560754
      WCGL605*D-17.513.08.130,200215560755
      QFVA5D6021X-17.512.08.131,400218695472
      QFVA5D6021X-17.512.08.131,400218695471
      W5A*61M24XAWFET110C066A*16.512.08.130,000215630172
      W5A*61M24XAWFET110C066A*16.512.08.130,000215630171
      W5A*60M24XAWFEU080C060B*16.512.08.029,600215629103
      W5A*60M24XAWFEU080C060B*16.512.08.029,600215629102
      W5A*61M24XAWFEU080C060B*16.512.08.029,800215630062
      W5A*61M24XAWFEU080C060B*16.512.08.029,800215630063
      W5A*61M24XAWFEU100C060B*16.512.08.030,200215630082
      W5A*61M24XAWFEU100C060B*16.512.08.030,200215630081
      W5A*61M21XAWFEU080C060B*16.512.08.029,800215629623
      W5A*61M21XAWFEU080C060B*16.512.08.029,800215629624
      W5A*61M21XAWFET110C066A*16.512.08.030,000215629733
      W5A*61M21XAWFET110C066A*16.512.08.030,000215629732
      W5VM61M24XAWFEU080C060B*16.011.78.531,600215626554
      W5VM61M24XAWFEU080C060B*16.011.78.531,600215626553
      W5VC61M24XAWFEU080C060B*16.011.78.531,600215628184
      W5VC61M24XAWFEU080C060B*16.011.78.531,600215628185
      W5VC60M21XAWFEU060B048B*16.011.78.130,600215627027
      W5VC60M21XAWFEU060B048B*16.011.78.130,600215627028
      W5VC60M21XAWFEU080C060B*16.011.78.130,400215627046
      W5VC60M21XAWFEU080C060B*16.011.78.130,400215627047
      W5VC60M21XAWFEU100C060B*16.011.78.130,400215627065
      W5VC60M21XAWFEU100C060B*16.011.78.130,400215627066
      W5VC60M21XAWFET110C066A*16.011.78.130,400215627142
      W5VC60M21XAWFET110C066A*16.011.78.130,400215627141
      W5VM60M21XAWFEU060B048B*16.011.78.130,000215625836
      W5VM60M21XAWFEU060B048B*16.011.78.130,000215625837
      W5VM60M21XAWFEU080C060B*16.012.08.129,800215625855
      W5VM60M21XAWFEU080C060B*16.012.08.129,800215625856
      W5VM60M21XAWFEU100C060B*16.011.78.130,400215625874
      W5VM60M21XAWFEU100C060B*16.011.78.130,400215625875
      W5VM60M21XAWFET110C066A*16.011.78.130,000215625964
      W5VM60M21XAWFET110C066A*16.011.78.130,000215625965
      W5VM60M21XAWFSU100C060B*16.011.78.130,200215626118
      W5VM60M21XAWFSU100C060B*16.011.78.130,200215626117
      W5VC61M21XAWFEU080C060B*16.012.08.130,600215627793
      W5VC61M21XAWFEU080C060B*16.012.08.130,600215627792
      W5VC61M21XAWFEU100C060B*16.011.78.131,000215627811
      W5VC61M21XAWFEU100C060B*16.011.78.131,000215627812
      W5VC61M21XAWFSU100C060B*16.011.78.131,400215628021
      W5VC61M21XAWFSU100C060B*16.011.78.131,400215628022
      W5A*60M24XAWFET110C066A*16.011.78.029,800215629212
      W5A*60M24XAWFET110C066A*16.011.78.029,800215629211
      W5A*60M24XAWFEU100C060B*16.011.78.029,600215629122
      W5A*60M24XAWFEU100C060B*16.011.78.029,600215629121
      W5A*61M21XAWFSU080C060B*16.011.78.030,200215629867
      W5A*61M21XAWFSU080C060B*16.011.78.030,200215629866
      W5A*61M21XAWFSU100C060B*16.011.78.030,200215629886
      W5A*61M21XAWFSU100C060B*16.011.78.030,200215629885
      W5A*61M21XAWFST100C060A*16.012.08.030,200215629963
      W5A*60M24XAWFSU080C060B*16.011.78.030,000215629361
      W5A*60M24XAWFSU080C060B*16.011.78.030,000215629362
      W5A*61M21XAWFST100C060A*16.012.08.030,200215629964
      W5A*60M24XAWFSU100C060B*16.011.78.030,000215629381
      W5A*60M24XAWFSU100C060B*16.011.78.030,000215629380
      W5A*60M24XAWFST100C060A*16.011.78.029,800215629472
      W5A*60M24XAWFST100C060A*16.011.78.029,800215629473
      Yearly running cost in 10 large cities$1,481-$4,211

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

      Questions5
      What is the SEER2 rating of the Grandaire W5H8T60*K*AAA?
      The Grandaire W5H8T60*K*AAA is rated at up to 17.5 SEER2 and 13.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 70 certified matchups SEER2 ranges from 16.0-17.5.
      Is the Grandaire W5H8T60*K*AAA 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 5-ton model.
      How much does the Grandaire W5H8T60*K*AAA cost to run per year?
      At its rated efficiency it costs about $1,481-$4,211 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,860 in Phoenix and $3,545 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 Grandaire W5H8T60*K*AAA?
      ENERGY STAR lists 70 certified combinations for this outdoor unit. The highest-rated ones use WCGL605*D, QFVA5D6021X, W5A*61M24XA.
      What refrigerant does the Grandaire W5H8T60*K*AAA 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 $1,864/yrYou save $1,013/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 Grandaire W5H8T60*K*AAA
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,864
      Current system, per year
      $2,877
      You save per year
      $1,013
      Payback
      20.2 years
      Net after 10 years
      -$10,371

      Cooling $1,106Heating $758Electricity used: 11,650 kWhSaved vs. a minimum-efficiency heat pump: $349

      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 5 ton models

      See all 100 5 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 15, 2026. How we use the data.