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      3-ton central heat pump · ESi Decades Extreme

      ECOER EODA18H-2436BAA

      Very good cooling efficiency and average heating efficiency for a 3-ton central heat pump, and certified for cold climates.

      Ranks #70 of 302 3 ton central heat pumps for cooling efficiency, and costs about $1,000 a year to run in a mixed climate like Atlanta.

      SEER2
      18.5 Cooling efficiency over a season
      Very good · beats 77%
      HSPF2
      9.0 Heating efficiency over a season
      Average · beats 54%
      EER2
      11.7 Cooling efficiency on a 95°F day
      Average · beats 43%
      Heat at 5°F
      24,600 BTU/h83% of its 47°F output
      Below average · beats 27%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 77% of central heat pumps.
      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 24,600 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • You want the newest refrigerant - it uses R-410A, which is being phased down.

      Calculate my running cost

      Details

      Specifications3 ton, R-410A
      General
      BrandECOER
      Outdoor unit modelEODA18H-2436BAA
      SeriesESi Decades Extreme
      TypeCentral heat pump
      Nominal size3 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceApril 10, 2024
      Last certifiedAugust 5, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better18.5 (range 17.2-18.5)
      EER2Efficiency at 95°F outdoors10.8-11.7
      Cooling capacity23,000-33,600 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.8-9.0
      Capacity at 47°F23,000-35,000 BTU/h
      Capacity at 17°F21,400-27,000 BTU/h
      Capacity at 5°F19,000-24,600 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.90-1.95
      ENERGY STAR cold climateYes
      Heating output as it gets colder83% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with EAHAEC-24 at the standard test temperatures, in BTU/h:

      Certified matchups2 indoor units

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

      Indoor unitSEER2EER2HSPF2Heat @5°FAHRI ref.
      EAHAEC-24 · cold climate18.511.78.819,000215722679
      EAHAEC-36 · cold climate17.210.89.024,600215722680
      Yearly running cost in 10 large cities$856-$2,423

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

      Questions5
      What is the SEER2 rating of the ECOER EODA18H-2436BAA?
      The ECOER EODA18H-2436BAA is rated at up to 18.5 SEER2 and 11.7 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2 certified matchups SEER2 ranges from 17.2-18.5.
      Is the ECOER EODA18H-2436BAA good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 24,600 BTU/h at 5°F with a COP of 1.95, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
      How much does the ECOER EODA18H-2436BAA cost to run per year?
      At its rated efficiency it costs about $856-$2,423 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,073 in Phoenix and $2,039 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 ECOER EODA18H-2436BAA?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use EAHAEC-24, EAHAEC-36.
      What refrigerant does the ECOER EODA18H-2436BAA 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 $1,075/yrYou save $681/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 ECOER EODA18H-2436BAA
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,075
      Current system, per year
      $1,755
      You save per year
      $681
      Payback
      18.4 years
      Net after 10 years
      -$5,695

      Cooling $639Heating $436Electricity used: 6,718 kWhSaved vs. a minimum-efficiency heat pump: $275

      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.

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      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of August 5, 2026. How we use the data.