Buying guidance

1 Ton Water Source Heat Pump Package Unit

1 Ton Water Source Heat Pump Package Unit
Mitsubishi Electric outdoor unit with two wall-mounted indoor units Clearance Center Mitsubishi R-410A Close-Outs Remaining stock of Mitsubishi Electric R-410A ductless systems, priced to clear while quantities last. Shop Mitsubishi Clearance
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Show: 12 24 48
Mitsubishi Electric outdoor unit with two wall-mounted indoor units Clearance Center Mitsubishi R-410A Close-Outs Remaining stock of Mitsubishi Electric R-410A ductless systems, priced to clear while quantities last. Shop Mitsubishi Clearance

1 Ton Water Source Heat Pump Package Unit

1 ton water source heat pump package units are self-contained systems that cool and heat by exchanging energy with a water loop, a well or a closed geothermal ground loop. Each unit holds the compressor, water-to-refrigerant heat exchanger, blower and controls in one cabinet, so there is no outdoor condensing unit. They are a strong fit for bedrooms, studio apartments, hotel and dorm rooms, small offices and individual zones in condos and multifamily buildings.

With a nominal capacity of about 12,000 BTU per hour, 1 ton units handle a single room or small zone efficiently, and several can share one building water loop so each space gets its own thermostat.

What you’ll find here

  • 1 ton water source and geothermal heat pump package units
  • Compact vertical and horizontal configurations with left or right return air
  • Low-GWP R-454B refrigerant models
  • 208/230V single-phase models
  • Cupronickel and copper water coil options for open-loop and closed-loop systems

How to choose

  • Size the unit to a load calculation for the space, not to the old equipment
  • Confirm the application: boiler/tower water loop, ground water (open loop) or ground loop (closed loop)
  • Compare EER for cooling and COP for heating at your expected entering water temperature
  • Pick the return air side (left or right) that matches your duct layout and service access
  • Match the electrical supply (208/230V 1-phase) to the building service
  • Check the required water flow (GPM) and pressure drop against your pump and loop
  • Choose a cupronickel water coil for well water or other aggressive water conditions

1 Ton Water Source Heat Pump vs Other Sizes

  • 0.5–0.75 ton: Single rooms, small offices and hotel guest rooms
  • 1 ton: Bedrooms, studio apartments, small offices and individual zones
  • 1.5–2 ton: Small homes, condos and larger single zones
  • 3–5 ton: Full homes and light commercial suites

FAQ

How much space does a 1 ton water source heat pump cover?
Typically a single room or small zone of roughly 400–600 square feet, depending on insulation, windows and climate.

Can these units be used for geothermal?
Yes. Most are rated for water loop, ground water and ground loop applications. Check each unit's ratings for your loop type.

Do these systems need ductwork?
Yes. Water source heat pumps distribute conditioned air through ducts, though short duct runs are common on small units.

Do they provide both heating and cooling?
Yes. A reversing valve lets the same unit heat or cool year-round.

Do they need professional installation?
Yes. Installation includes the water loop connections, electrical work, airflow setup and refrigerant checks, and should be done by a licensed HVAC professional.

HVAC365 offers transparent pricing, expert guidance and reliable 1 ton water source heat pump package units for efficient, dependable zone comfort.