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Ducted Split Quad Air Conditioners

A single outdoor unit and four ducted indoor units hidden in the false ceilings: you air-condition four zones with an invisible, quiet and tidy system. Find Haier and Hisense ready to ship, from 2.218 euros.
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What is a quad split ducted air conditioner?

The quad split ducted system connects four ducted indoor units to a single outdoor unit. The indoor units are concealed in the false ceilings or in dedicated chases, while the air enters and leaves the rooms through discreet vents and grilles. It is the right solution when you want to air-condition four different rooms while keeping walls and ceilings completely clear, with no visible split units.

Why choose the ducted version

Ducting makes the system practically invisible: you see only the supply and return grilles, while the whole machine stays above the false ceiling. This translates into a clean look, a more even air distribution and high acoustic comfort, because the noise of the ventilation stays away from the living area. With a single outdoor unit you also reduce clutter on balconies and façades.

Four zones, a single unit

Having four units on a single outdoor unit lets you manage four rooms independently, for example the living room, the kitchen and two bedrooms. Each zone can run at its own temperature and on its own schedule, while the inverter modulates the power delivered according to the rooms actually in use. If you only need fewer rooms, you can consider a tri split wall-mounted system or a tailored setup with the multisplit configurator.

How many BTU do you need for four rooms?

In a quad split, each indoor unit has its own power, expressed in BTU, chosen according to the square metres of the individual room. The outdoor unit must then support the sum of the four units. As a general rule:

  • Bedrooms and studies up to about 25 m²: count on around 9000 BTU.
  • Living rooms and spaces from 25 to 35 m²: count on around 12000 BTU.
  • Open spaces and large living areas: count on from 18000 BTU upwards.

The correct combination of the four units avoids both undersizing and waste, because the system always works close to its point of maximum efficiency.

The available brands

For quad split ducted systems we offer solutions from Haier and Hisense, with official warranty and available spare parts. Prices range from about 2.218 euros to 3.690 euros, depending on the power of the outdoor unit and the size of the four indoor units. All catalogue models are ready to ship.

Installation and design

A ducted system requires a minimum of design work, because the false ceilings and the duct routes must be planned before installation. For this reason it is best to define from the outset the position of the vents, the air paths and the space for the outdoor unit. If you prefer a simpler, visible installation, consider instead the floor console version or the recessed cassette units.

Tax incentives and reduced VAT

The purchase and installation of a heat pump air conditioner may qualify for tax incentives where applicable, such as reduced VAT for renovation work. The conditions depend on the type of work, so it is best to check the current requirements before purchase. Find all the active promotions on the offers page and the full range in the air conditioners section.

Frequently asked questions

What is the difference between a quad split ducted and a wall-mounted one?
In the ducted version the four indoor units are hidden in the false ceilings and the air comes from the vents, so the system stays invisible. In the wall-mounted version the units are in view. For the same comfort, the ducted version offers a cleaner look but requires a more structured installation.
Can I set different temperatures in the four rooms?
Yes. Each indoor unit works independently, so you can have different temperatures and schedules in each of the four zones connected to the same outdoor unit, switching on only the rooms you need.
How much space is needed for the ducted units?
The ducted units must be housed in a false ceiling or in a chase with enough height for the air flow and for maintenance. For this reason it is best to plan the routes already at the design stage, especially if renovation work is under way.
How many BTU should the outdoor unit of a quad split have?
The outdoor unit must support the sum of the four indoor units, each sized in BTU on the square metres of its room. Correct sizing avoids both undersizing and waste and keeps efficiency high.
Are the ducted units quiet?
Yes, because the noisy part of the ventilation stays above the false ceiling, away from the living area. Only the air flow comes out of the vents, so acoustic comfort in the rooms is high.
Can I get reduced VAT?
In many cases yes, when the installation is part of renovation work. The application of reduced VAT and incentives depends on the type of work and the documentation, so it is best to check the current requirements.