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Ducted Mini Split Heat Pumps

Ducted Mini Split Heat Pumps

Ducted quad zone mini split heat pumps pair one multi-zone outdoor unit with four concealed low static and mid static ducted air handlers that hide above the ceiling, in a soffit or in an attic and feed short duct runs. Every system here provides heating and cooling, with a separate setpoint in each of the four rooms.

Ducted indoor units keep the equipment out of sight and can serve one large room or two or three small adjoining rooms from a single zone through short runs of ductwork.

Ducted Indoor Units in Heating Mode

Ducted units deliver warm air through ceiling or floor registers, which gives a look similar to a central system while keeping room-by-room control on the other zones. With an inverter outdoor unit, each zone receives only the heat it needs, so lightly used rooms do not drive up operating cost. For cold climates, look for Hyper-Heat or other cold-climate outdoor units and compare the heating capacity at 5°F and 17°F on each listing.

Buying Tips

  • Size each room separately. Use a room-by-room load calculation and match each ducted unit to the room it serves.
  • Use approved combinations. Indoor and outdoor units must appear on the manufacturer's combination list. The quad zone systems in this category are built from approved matchups.
  • Check the details on each listing. Compare SEER2, HSPF2, heating capacity, sound level, dimensions and electrical requirements before ordering.
  • Plan accessories. Line sets, condensate pumps, wall brackets or stands, disconnects and controllers are usually ordered separately.

Installation Considerations

Ducted units need space above the ceiling or in an attic, a return air path, properly sized supply ducts within the unit's rated static pressure, and a condensate drain or pump. Some multi-zone systems limit how many ducted units can share a branch box. A four-zone system also needs a line set for each indoor unit, a dedicated circuit for the outdoor unit and, where required, branch boxes. R-454B equipment must be installed by technicians trained in A2L refrigerant handling. Professional installation is recommended, and a permit is usually required.

Ducted Quad Zone Heat Pump FAQ

Q: Can a ducted indoor unit be mixed with wall mounted heads on the same system?

A: Often yes, but it depends on the outdoor unit. Check the manufacturer's approved combination list, the total connected capacity limits and any limits on ducted units per branch box before ordering. The system listings in this category already follow those limits.

Q: Can I mix ducted units with other indoor styles on a quad zone system?

A: Many outdoor units allow mixed indoor styles, but the combination has to be approved by the manufacturer. This category groups systems where all four indoor units are ducted units. Mixed systems are listed in the other indoor style categories where applicable.

Q: Will a ducted quad zone heat pump work in cold weather?

A: Yes. Heat pumps keep heating well below freezing, and cold-climate models are built for very low temperatures. Check the low ambient heating limit and the 5°F capacity on each listing.

Q: What is included with each system?

A: Each listing shows the outdoor unit, all four indoor units and any branch boxes by model number. Line sets and other installation accessories are sold separately unless noted.

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