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      2.5-ton central heat pump · RU Series

      Mitsutomo RU-UZ30-LA-Q

      Excellent cooling efficiency and average heating efficiency for a 2.5-ton central heat pump, but not rated for cold climates.

      Ranks #2 of 199 2.5 ton central heat pumps for cooling efficiency, and costs about $816 a year to run in a mixed climate like Atlanta.

      SEER2
      22.3 Cooling efficiency over a season
      Excellent · beats 99%
      HSPF2
      9.0 Heating efficiency over a season
      Average · beats 54%
      EER2
      12.0 Cooling efficiency on a 95°F day
      Average · beats 64%
      Heat at 5°F
      20,400 BTU/h67% of its 47°F output
      Average · beats 58%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 99% 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.

      Calculate my running cost

      Details

      Specifications2.5 ton, R-454B
      General
      BrandMitsutomo
      Outdoor unit modelRU-UZ30-LA-Q
      SeriesRU Series
      TypeCentral heat pump
      Nominal size2.5 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceMay 20, 2024
      Last certifiedNovember 24, 2025
      Cooling
      SEER2Seasonal efficiency, higher is better22.3 (range 17.0-22.3)
      EER2Efficiency at 95°F outdoors11.0-12.0
      Cooling capacity30,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.7-9.0
      Capacity at 47°F30,000 BTU/h
      Capacity at 17°F19,400-20,000 BTU/h
      Capacity at 5°F20,000-20,400 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.94-2.10
      ENERGY STAR cold climateNo
      Heating output as it gets colder67% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with HW-UZ30-LA-Q 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.
      HW-UZ30-LA-Q22.312.09.020,000217162536
      HV-UZ30-LA-Q17.011.08.720,400217162441
      Yearly running cost in 10 large cities$637-$2,026

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

      Questions5
      What is the SEER2 rating of the Mitsutomo RU-UZ30-LA-Q?
      The Mitsutomo RU-UZ30-LA-Q is rated at up to 22.3 SEER2 and 12.0 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 17.0-22.3.
      Is the Mitsutomo RU-UZ30-LA-Q 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 2.5-ton model.
      How much does the Mitsutomo RU-UZ30-LA-Q cost to run per year?
      At its rated efficiency it costs about $637-$2,026 a year in electricity in large U.S. cities, depending on climate and local rates - for example $830 in Phoenix and $1,727 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 Mitsutomo RU-UZ30-LA-Q?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use HW-UZ30-LA-Q, HV-UZ30-LA-Q.
      What refrigerant does the Mitsutomo RU-UZ30-LA-Q 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 $847/yrYou save $700/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 Mitsutomo RU-UZ30-LA-Q
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $847
      Current system, per year
      $1,547
      You save per year
      $700
      Payback
      16.4 years
      Net after 10 years
      -$4,500

      Cooling $474Heating $373Electricity used: 5,293 kWhSaved vs. a minimum-efficiency heat pump: $340

      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 2.5 ton models

      See all 199 2.5 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of November 24, 2025. How we use the data.