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      2-ton central heat pump · G Series

      TOSOT TU30W-GDU

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

      Ranks #131 of 331 2 ton central heat pumps for cooling efficiency, and costs about $850 a year to run in a mixed climate like Atlanta.

      SEER2
      18.2 Cooling efficiency over a season
      Very good · beats 73%
      HSPF2
      8.3 Heating efficiency over a season
      Below average · beats 30%
      EER2
      11.2 Cooling efficiency on a 95°F day
      Below average · beats 28%
      Heat at 5°F
      19,500 BTU/h79% of its 47°F output
      Average · beats 67%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 73% of central heat pumps.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      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

      Specifications2 ton, R-32
      General
      BrandTOSOT
      Outdoor unit modelTU30W-GDU
      SeriesG Series
      TypeCentral heat pump
      Nominal size2 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceDecember 18, 2024
      Last certifiedSeptember 1, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better18.2 (range 18.0-18.2)
      EER2Efficiency at 95°F outdoors11.2-11.5
      Cooling capacity24,000-27,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.3
      Capacity at 47°F24,000-28,000 BTU/h
      Capacity at 17°F19,600-23,000 BTU/h
      Capacity at 5°F19,000-19,500 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.75-2.14
      ENERGY STAR cold climateNo
      Heating output as it gets colder79% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with TUD24AH2-GDU 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.
      TUD24AH2-GDU18.211.28.319,000216626000
      TUD30AH2-GDU18.011.58.319,500216626001
      Same unit, other model numbers2

      These model numbers have exactly the same certified ratings and matchups as the TOSOT TU30W-GDU: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

      Yearly running cost in 10 large cities$700-$2,080

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

      Questions6
      What is the SEER2 rating of the TOSOT TU30W-GDU?
      The TOSOT TU30W-GDU is rated at up to 18.2 SEER2 and 11.2 EER2 for cooling and up to 8.3 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2 certified matchups SEER2 ranges from 18.0-18.2.
      Is the TOSOT TU30W-GDU 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 TOSOT TU30W-GDU cost to run per year?
      At its rated efficiency it costs about $700-$2,080 a year in electricity in large U.S. cities, depending on climate and local rates - for example $892 in Phoenix and $1,760 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      Is the TOSOT TU30W-GDU the same as the TOSOT TU30-R32GDU?
      Yes, as far as the certified ratings go. ENERGY STAR lists 3 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
      Which indoor units work with the TOSOT TU30W-GDU?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use TUD24AH2-GDU, TUD30AH2-GDU.
      What refrigerant does the TOSOT TU30W-GDU 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 $900/yrYou save $509/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 TOSOT TU30W-GDU
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $900
      Current system, per year
      $1,409
      You save per year
      $509
      Payback
      19.7 years
      Net after 10 years
      -$4,915

      Cooling $522Heating $378Electricity used: 5,625 kWhSaved vs. a minimum-efficiency heat pump: $183

      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 September 1, 2026. How we use the data.