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      2-ton central heat pump · 4HP18V SERIES

      ALLIED 4HP18V36P

      Very good cooling efficiency and below average heating efficiency for a 2-ton central heat pump, but not rated for cold climates.

      Ranks #60 of 331 2 ton central heat pumps for cooling efficiency, and costs about $704 a year to run in a mixed climate like Atlanta.

      SEER2
      19.0 Cooling efficiency over a season
      Very good · beats 85%
      HSPF2
      8.5 Heating efficiency over a season
      Below average · beats 38%
      EER2
      12.3 Cooling efficiency on a 95°F day
      Very good · beats 76%
      Heat at 5°F
      20,000 BTU/h64% of its 47°F output
      Very good · beats 71%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 85% of central heat pumps.
      • You want steady temperatures and quiet running - the compressor varies its speed.
      • You want a choice of indoor units - 770 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.
      • You want the newest refrigerant - it uses R-410A, which is being phased down.

      Calculate my running cost

      Details

      Specifications2 ton, R-410A
      General
      BrandALLIED
      Also sold asAC Pro, Concord, Ducane, XAAE
      Outdoor unit model4HP18V36P
      Series4HP18V SERIES
      TypeCentral heat pump
      Nominal size2 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceJuly 1, 2021
      Last certifiedJune 3, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better19.0 (range 16.0-19.0)
      EER2Efficiency at 95°F outdoors11.0-12.3
      Cooling capacity22,000-34,800 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8-8.5
      Capacity at 47°F22,000-34,800 BTU/h
      Capacity at 17°F14,900-24,800 BTU/h
      Capacity at 5°F14,100-20,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.78-2.18
      ENERGY STAR cold climateNo
      Heating output as it gets colder64% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with EAH1P30B+H4TXV01 at the standard test temperatures, in BTU/h:

      Certified matchups770 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 770 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      EAH1P30B+H4TXV0196G2UH045BV1219.012.38.515,000206903262
      EAH1P30B+H4TXV0196G2UH070BV1219.012.38.514,900206903263
      EAH1P30B+H4TXV0192G1UH045BE1219.012.38.515,200206903269
      EAH1P30B+H4TXV0192G1UH045BE1219.012.38.515,200206905712
      EAH1P30B+H4TXV0196G2UH045BV1219.012.38.515,000206905720
      EAH1P30B+H4TXV0196G2UH070BV1219.012.38.514,900206905721
      EAH1P30B+H4TXV0192G1UH070BE1219.012.38.515,100206905713
      EAH1P30B+H4TXV0192G1UH070BE1219.012.38.515,100206903270
      BCE5V36M-19.011.78.518,100206905446
      BCE5V36M-19.011.78.518,100206905445
      BCE5V36M-19.011.78.518,100206905447
      BCE5V36M-19.011.78.518,100206902818
      BCE7E18M-19.012.38.514,600206903145
      BCE7E30M-19.012.38.515,500206903147
      BCE7E30M-19.012.38.515,500206905464
      BCE7E18M-19.012.38.514,600206905462
      BCE7E18M-19.012.38.514,600206906232
      BCE7E30M-19.012.38.515,500206906234
      EAH1P30B+H4TXV0192G1UH045BE1219.012.38.515,200206906482
      EAH1P30B+H4TXV0192G1UH070BE1219.012.38.515,100206906483
      EAH1P30B+H4TXV0196G2UH070BV1219.012.38.514,900206906491
      EAH1P30B+H4TXV0196G2UH045BV1219.012.38.515,000206906490
      BCE5V36M-19.011.78.518,100207698289
      EAH1P30B+H4TXV0192G1UH045BE1219.012.38.515,200206906097
      EAH1P30B+H4TXV0192G1UH070BE1219.012.38.515,100206906098
      EAH1P30B+H4TXV0196G2UH045BV1219.012.38.515,000206906105
      EAH1P30B+H4TXV0196G2UH070BV1219.012.38.514,900206906106
      BCE7E18M-19.012.38.514,600206905847
      BCE7E30M-19.012.38.515,500206905849
      7EH30BX-0*+TDR92G1UH045BE1219.012.38.515,200214730489
      7EH30BX-0*+TDR92G1UH070BE1219.012.38.515,100214730490
      7EH30BX-0*+TDR96G2UH045BV1219.012.38.515,000214730564
      7EH30BX-0*+TDR96G2UH070BV1219.012.38.514,900214730566
      7EH30BX-0*+TDR92G1UH045BE1219.012.38.515,200214729039
      7EH30BX-0*+TDR92G1UH070BE1219.012.38.515,100214729040
      7EH30BX-0*+TDR96G2UH045BV1219.012.38.515,000214729046
      7EH30BX-0*+TDR96G2UH070BV1219.012.38.514,900214729048
      7EH30BX-0*+TDR92G1UH045BE1219.012.38.515,200214730795
      7EH30BX-0*+TDR92G1UH070BE1219.012.38.515,100214730796
      7EH30BX-0*+TDR96G2UH045BV1219.012.38.515,000214730802
      7EH30BX-0*+TDR96G2UH070BV1219.012.38.514,900214730804
      7EH30BX-0*+TDR92G1UH045BE1219.012.38.515,200214729690
      7EH30BX-0*+TDR92G1UH070BE1219.012.38.515,100214729691
      7EH30BX-0*+TDR96G2UH045BV1219.012.38.515,000214729697
      7EH30BX-0*+TDR96G2UH070BV1219.012.38.514,900214729699
      7AH2AE18PX-0-19.012.38.514,600215218993
      7AH2AE18PX-0-19.012.38.514,600215218994
      7AH2AE18PX-0-19.012.38.514,600215218995
      7AH2AE18PX-0-19.012.38.514,600215218996
      7AH2AE30PX-0-19.012.38.515,500215219001
      7AH2AE30PX-0-19.012.38.515,500215219002
      7AH2AE30PX-0-19.012.38.515,500215219003
      7AH2AE30PX-0-19.012.38.515,500215219004
      7AH1AV36PX-0-19.011.78.518,100215219071
      7AH1AV36PX-0-19.011.78.518,100215219072
      7AH1AV36PX-0-19.011.78.518,100215219073
      7AH1AV36PX-0-19.011.78.518,100215219075
      7AH1AV36PX-0-19.011.78.518,100215219074
      EAH1P48C+TDR+TXV97G2UH090CV1219.011.08.518,300214100192
      EAH1P48C+TDR+TXV97G2UH090CV1219.011.08.518,300214100205
      Yearly running cost in 10 large cities$586-$1,717

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

      Questions5
      What is the SEER2 rating of the ALLIED 4HP18V36P?
      The ALLIED 4HP18V36P is rated at up to 19.0 SEER2 and 12.3 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 770 certified matchups SEER2 ranges from 16.0-19.0.
      Is the ALLIED 4HP18V36P 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 2-ton model.
      How much does the ALLIED 4HP18V36P cost to run per year?
      At its rated efficiency it costs about $586-$1,717 a year in electricity in large U.S. cities, depending on climate and local rates - for example $743 in Phoenix and $1,450 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 ALLIED 4HP18V36P?
      ENERGY STAR lists 770 certified combinations for this outdoor unit. The highest-rated ones use EAH1P30B+H4TXV01, BCE5V36M, BCE7E18M.
      What refrigerant does the ALLIED 4HP18V36P use?
      It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

      Running cost and savings

      Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

      Heat pump $748/yrYou save $469/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 ALLIED 4HP18V36P
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $748
      Current system, per year
      $1,217
      You save per year
      $469
      Payback
      19.2 years
      Net after 10 years
      -$4,313

      Cooling $437Heating $311Electricity used: 4,676 kWhSaved vs. a minimum-efficiency heat pump: $185

      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 2 ton models

      See all 331 2 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 3, 2026. How we use the data.