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      4-ton central heat pump · SIDE-DISCHARGE

      VillaTherm VHPSD-UCHA-48HDCSN

      Average cooling efficiency and very good heating efficiency for a 4-ton central heat pump, and certified for cold climates.

      Ranks #117 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,349 a year to run in a mixed climate like Atlanta.

      SEER2
      17.5 Cooling efficiency over a season
      Average · beats 58%
      HSPF2
      9.8 Heating efficiency over a season
      Very good · beats 79%
      EER2
      11.0 Cooling efficiency on a 95°F day
      Below average · beats 23%
      Heat at 5°F
      36,000 BTU/h75% of its 47°F output
      Very good · beats 82%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 36,000 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 79% 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

      Specifications4 ton, R-32
      General
      BrandVillaTherm
      Also sold asMDX
      Outdoor unit modelVHPSD-UCHA-48HDCSN
      SeriesSIDE-DISCHARGE
      TypeCentral heat pump
      Nominal size4 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceAugust 26, 2026
      Last certifiedSeptember 15, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better17.5 (range 17.5)
      EER2Efficiency at 95°F outdoors11.0
      Cooling capacity48,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.8
      Capacity at 47°F48,000 BTU/h
      Capacity at 17°F48,000 BTU/h
      Capacity at 5°F36,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.25
      ENERGY STAR cold climateYes
      Heating output as it gets colder75% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with VAH-UCHA-48SHDCALN2 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.
      VAH-UCHA-48SHDCALN2 · cold climate17.511.09.836,000218731836
      Same unit, other model numbers1

      These model numbers have exactly the same certified ratings and matchups as the VillaTherm VHPSD-UCHA-48HDCSN: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

      • MDX MCHA-48HDCSO2
      Yearly running cost in 10 large cities$1,285-$3,162

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

      Questions6
      What is the SEER2 rating of the VillaTherm VHPSD-UCHA-48HDCSN?
      The VillaTherm VHPSD-UCHA-48HDCSN is rated at up to 17.5 SEER2 and 11.0 EER2 for cooling and up to 9.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the VillaTherm VHPSD-UCHA-48HDCSN good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 36,000 BTU/h at 5°F with a COP of 2.25, so it is still 2.3 times as efficient as electric resistance heat at that temperature.
      How much does the VillaTherm VHPSD-UCHA-48HDCSN cost to run per year?
      At its rated efficiency it costs about $1,285-$3,162 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,546 in Phoenix and $2,612 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      Is the VillaTherm VHPSD-UCHA-48HDCSN the same as the MDX MCHA-48HDCSO2?
      Yes, as far as the certified ratings go. ENERGY STAR lists both 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 VillaTherm VHPSD-UCHA-48HDCSN?
      ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses VAH-UCHA-48SHDCALN2.
      What refrigerant does the VillaTherm VHPSD-UCHA-48HDCSN 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 $1,514/yrYou save $961/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 VillaTherm VHPSD-UCHA-48HDCSN
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,514
      Current system, per year
      $2,475
      You save per year
      $961
      Payback
      18.7 years
      Net after 10 years
      -$8,391

      Cooling $965Heating $549Electricity used: 9,463 kWhSaved vs. a minimum-efficiency heat pump: $384

      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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      See all 319 4 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 15, 2026. How we use the data.