Commercial, Residential, Residential
One of the main considerations for anyone evaluating the purchase and installation of an air conditioning system with no outdoor unit is certainly the choice between a monobloc system and a split system. The two configurations meet many different needs, but they share one element in common: the absence of the outdoor motor on the building’s façade.
The entire Parkair product range is identified as air conditioning systems with no outdoor unit, whether monobloc or split systems. The monobloc integrates everything into a single unit; the split system, on the other hand, consists of an indoor motor connected to fan units. The choice depends on the available space, the number of rooms to be conditioned and any architectural constraints.
One of the main considerations for anyone evaluating the purchase and installation of a air conditioning system with no outdoor unit is certainly the choice between a monobloc system and a split system. The two configurations meet many different needs, but they share one element in common: the absence of the outdoor motor on the building’s façade.
The monobloc houses all components, compressor included, in a single unit. There are two variants, designed for different needs: a room unit, installed directly in the room to be conditioned, and a ducted version, installed in a plant room or false ceiling and connected to multiple rooms through hidden ducting.
The room-unit variant, AiROCK Acqua and AiROCK Aria, comes pre-charged with refrigerant gas from the factory: for this reason, neither model requires F-Gas certification for installation. What does change is what needs to be connected to make them work: AiROCK Acqua connects to the water mains and the power supply, with no work needed on the wall; AiROCK Aria, on the other hand, must be fixed to a wall that leads to the outside, since it requires two openings for the air exchange grilles, in addition to the electrical connection.
The ducted variant, MCWD SLIM, follows a different logic: it is installed in a plant room or false ceiling, and distributes air to multiple rooms through hidden ducting. Thanks to its compact structure, only 30 cm high, it is the ideal choice where installation space is particularly limited, designed for residential settings.
The split system, on the other hand, is closer to the classic structure of traditional air conditioners, separating the indoor fan unit from the condensing unit and connecting the two parts with refrigerant pipework. The key difference is that the condensing unit is still positioned inside the building: this is the case for MCW 2.0 and MCA 2.0. In neither architecture, monobloc or split, does a component appear on the façade as it would with traditional air conditioners.
The condensing unit of Parkair split systems is installed in a plant room, false ceiling, under-stairs space, cabinet or built into furniture, depending on the range. The only real distinction concerns the type of technology, Water/Air or Air/Air: in the first case, the unit can be positioned anywhere a water connection is available; in the second, a connection to the outside of the building must be provided, an operation comparable to that required for installing AiROCK Aria.
| Room monobloc (AiROCK Acqua, AiROCK Aria) | Ducted monobloc (MCWD SLIM) | Split (MCW 2.0, MCA 2.0) | |
|---|---|---|---|
| Components | All integrated into a single wall-mounted unit | All integrated into a single unit, with air ducting | Split between fan unit and condensing unit, both indoors |
| Connections required | AiROCK Acqua: water and electrical mains, no work on the wall. AiROCK Aria: electrical mains and two 180 mm openings in the wall facing outside | Water and electrical mains; no opening in the façade | MCW 2.0: water mains, condensing unit can be positioned anywhere a water connection is available. MCA 2.0: electrical mains and a connection to the outside, comparable to that of AiROCK Aria |
| Installation | Wall-mounted, in the room to be conditioned | Plant room or false ceiling, minimum height 30 cm | Plant room, false ceiling, under-stairs space or cabinet |
| Typical uses | Single room, limited space | Multiple rooms from a single ducting system, commercial or hospitality settings | Multi-zone or single-zone systems |
| Maximum number of rooms | 1 per unit | Multiple rooms via ducting and linear diffusers | Up to 5 (MCW 2.0 Multisplit) or up to 3 (MCA 2.0 Multisplit) |
The room monobloc is the natural choice for a single room with a strict aesthetic constraint: AiROCK Acqua has a sealed refrigerant circuit, connects with a simple Schuko plug and requires no F-Gas certification for either installation or maintenance; AiROCK Aria requires only two 180 mm openings in the façade for the exchange grilles.
The ducted monobloc comes into play when multiple rooms need to be covered while still using a single unit: MCWD SLIM, only 30 cm high, fits into false ceilings even where space is limited, with output from 3.7 to 5.2 kW and energy class A++/A+, designed for residential use, retrofits and renovations.
The split system, in its monosplit and multisplit versions, remains the choice when several rooms need to be conditioned with independent zone control from a single indoor unit: MCW 2.0 Multisplit connects up to 5 indoor units to the same water circuit, with energy class up to A+++/A++; MCA 2.0 Multisplit reaches up to 3 indoor units on the air circuit, with the condensing unit installable in cabinets, plant rooms, lofts or basements.
A: No, performance depends on the model and the energy class, not on the configuration itself. AiROCK Acqua reaches class A+++/A++, the same as the MCW 2.0 split range.
A: With a room monobloc (AiROCK Acqua or AiROCK Aria), no: they cover a single room. With a ducted monobloc such as MCWD or MCWD SLIM, yes: the ducting distributes air to multiple rooms from a single unit.
A: No. In the Parkair range, no-outdoor-unit monoblocs and splits never involve a condensing unit visible on the façade as with traditional air conditioners. Even for MCA 2.0, the installation proposed is always indoors, in a plant room, loft, basement or cabinet.
A: Not necessarily: it depends on the model, the output and the specific complexity of the installation.
Whether you choose a monobloc or a split, with Parkair your building’s façade stays untouched. Find out which solution fits your project: Catalogue 2026
Edited with AI support
ASSOCIATIONS
Company
Solutions
Products
Assistance and Warranty
Copyright © 2024 - Parkair Srl - P.IVA / C.F. / N. Iscr. Al Reg. Imprese IT03755100967 | REA MI-1700813 | Cap.Soc. 10.400 € Sede Legale Via Paolo Sarpi 21 Milano 20154
