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      3-ton central heat pump · Redwood

      Electric Air EA-RW36DCU

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

      Ranks #21 of 302 3 ton central heat pumps for cooling efficiency, and costs about $888 a year to run in a mixed climate like Atlanta.

      SEER2
      20.2 Cooling efficiency over a season
      Excellent · beats 95%
      HSPF2
      10.2 Heating efficiency over a season
      Excellent · beats 91%
      EER2
      11.5 Cooling efficiency on a 95°F day
      Below average · beats 31%
      Heat at 5°F
      25,000 BTU/h73% of its 47°F output
      Average · beats 58%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 95% of central heat pumps.
      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 25,000 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 91% of central heat pumps.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • Nothing stands out - its ratings have no weak spot for its class.

      Calculate my running cost

      Details

      Specifications3 ton, R-32
      General
      BrandElectric Air
      Outdoor unit modelEA-RW36DCU
      SeriesRedwood
      TypeCentral heat pump
      Nominal size3 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceDecember 10, 2025
      Last certifiedJune 3, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better20.2 (range 20.2)
      EER2Efficiency at 95°F outdoors11.5
      Cooling capacity34,200 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better10.2
      Capacity at 47°F34,200 BTU/h
      Capacity at 17°F26,200 BTU/h
      Capacity at 5°F25,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.10
      ENERGY STAR cold climateYes
      Heating output as it gets colder73% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with EA-RW36DAH at the standard test temperatures, in BTU/h:

      Certified matchups1 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.
      EA-RW36DAH · cold climate20.211.510.225,000218361405
      Yearly running cost in 10 large cities$795-$2,120

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

      Questions5
      What is the SEER2 rating of the Electric Air EA-RW36DCU?
      The Electric Air EA-RW36DCU is rated at up to 20.2 SEER2 and 11.5 EER2 for cooling and up to 10.2 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the Electric Air EA-RW36DCU good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 25,000 BTU/h at 5°F with a COP of 2.10, so it is still 2.1 times as efficient as electric resistance heat at that temperature.
      How much does the Electric Air EA-RW36DCU cost to run per year?
      At its rated efficiency it costs about $795-$2,120 a year in electricity in large U.S. cities, depending on climate and local rates - for example $980 in Phoenix and $1,770 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 Electric Air EA-RW36DCU?
      ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses EA-RW36DAH.
      What refrigerant does the Electric Air EA-RW36DCU use?
      It uses 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 $971/yrYou save $792/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 Electric Air EA-RW36DCU
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $971
      Current system, per year
      $1,763
      You save per year
      $792
      Payback
      16.4 years
      Net after 10 years
      -$5,081

      Cooling $596Heating $376Electricity used: 6,072 kWhSaved vs. a minimum-efficiency heat pump: $381

      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 3, 2026. How we use the data.