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    Airzone — Authorized Installer

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    Equipment installed on this project

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    Case Study 2026

    Ducted Air Conditioning Installation Marbella — Airzone Flexa & Daikin R32, San Pedro de Alcántara

    Case Study: Full Villa Ducted AC Retrofit in San Pedro — Daikin R32 Inverter Outdoor Units, Daikin Concealed Ducted Indoor Units and Airzone Flexa 25 Plus Zoning with Blueface Zero Thermostats

    San Pedro de Alcántara, Marbella
    May 2026
    Airzone Flexa 25+
    eu.bac · F-Gas · REBT
    Prices shown are for this specific completed project. Every installation is different — your costs will depend on your property, access, and system requirements and are confirmed after a free site survey. Contact us for a free quote.
    Airzone Flexa 25 Plus Rectangular (AZC25PCB1MOTU) and Blueface Zero (AZCE6BLUEZER0CB) boxes delivered — Made in Spain, Málaga

    Airzone Flexa 25 Plus Rectangular + Blueface Zero — made in Málaga

    Daikin concealed ducted indoor unit hung in ceiling void on threaded rod — bathroom of San Pedro villa

    Daikin concealed ducted indoor unit hung in bathroom ceiling void

    Two Daikin R32 inverter outdoor units on side wooden terrace — A2L safety label visible

    Two Daikin R32 inverter outdoor units — independent upstairs / downstairs

    Project Overview
    San Pedro de Alcántara, Marbella
    Two-Floor Private Villa (Occupied During Works)
    Daikin Concealed Ducted Indoor Units + Daikin R32 Inverter Outdoors + Airzone Flexa 25 Plus Zoning
    Dedicated REBT 230 V Spurs — Type A 30 mA RCBOs
    R32 — A2L (low-GWP, GWP 675)
    May 2026

    The Challenge: A Lived-In San Pedro Villa Needing Quiet, Zoned, Ducted Comfort

    The owners of this two-floor villa just inland of San Pedro de Alcántara — a few minutes from Guadalmina and Nueva Andalucía — wanted to remove a patchwork of old wall-split AC units that had been added one room at a time over the years, and replace the whole lot with a single, properly designed ducted system. They wanted three things very clearly:

    • Ducted indoor units hidden in the ceiling void — no visible wall splits ruining the interior finishes (curtains, mirrors, classic bathroom tilework all visible in the photos)
    • Independent room-by-room control — the master bedroom should be able to be cool at 22 °C while the guest bathroom sits at 24 °C and the living area at 23 °C, all without overcooling unused rooms
    • The works had to happen with the family living in the house — minimal dust, no overnight shutdowns of water or power, and the bathrooms back in service every evening
    • The existing ceiling void above the bathrooms already held a redundant duct, redundant flexible conduit and dozens of legacy cables (visible in the strip-out photos) — these all had to be safely removed before the new equipment could be hung
    • Two outdoor units had to share one tight side terrace bordered by a tree canopy and a glass pool enclosure — discharge clearances, service access and aesthetic impact were all constrained
    • Refrigerant runs had to climb two floors externally up a rendered white wall and clip neatly under the terracotta roof tiles, with no visible mess from the garden or pool side
    Bathroom ceiling void opened up: old fibreglass-lined duct, flexible conduit and legacy cabling visible

    Before: old fibreglass-lined duct + legacy cabling

    Second bathroom with ceiling opened above shower area — concrete soffit and legacy conduits exposed

    Second bathroom: concrete soffit and legacy services exposed

    Why Airzone Flexa 25 Plus Was the Right Zoning System for This Villa

    Airzone is the European reference brand for HVAC zoning — designed, engineered and built in Málaga (Parque Tecnológico de Andalucía, C/Marie Curie 21, 29590, Málaga, as printed on the boxes delivered to this job). Specifying Airzone on a Marbella villa is not just a technical choice — it is a local-supply-chain choice, with parts and tech support available within hours rather than days. Every claim below is supported by the manufacturer's published datasheet, what is printed on the delivered packaging visible in the photos, or an independent regulatory source:

    Airzone Flexa 25 Plus Rectangular — Purpose-Built for Daikin Concealed Ducted

    The system specified here is the Airzone Flexa 25 Plus Rectangular (Airzone code AZC25PCB1MOTU, clearly visible on the box label in the delivery photo). It is the rectangular-damper variant of the Flexa system — the right architecture for concealed ducted indoor units feeding rectangular galvanised plenums into each room. Each motorised damper opens or closes independently, so any combination of rooms can call for cooling without the others being forced to run

    Airzone Blueface Zero Master Thermostat (AZCE6BLUEZER0CB)

    Every Airzone install needs a master controller. We specified the Airzone Blueface Zero (Airzone code AZCE6BLUEZER0CB, visible on the smaller box in the delivery photo) as the home's master thermostat. Capacitive colour touchscreen, room temperature and humidity sensor, scheduling, eco/comfort modes, and full visibility of every zone's current setpoint and demand from a single wall plate. The Blueface Zero is the entry point for the homeowner — the rest of the rooms can run on lower-cost wired or wireless zone thermostats if budget matters

    Designed and Built in Málaga — Local Tech Support and Spares

    Airzone is headquartered at Parque Tecnológico de Andalucía in Málaga (visible on the box: 'C/Marie Curie, 21 - 29590, Málaga (Spain) — MADE IN SPAIN'). That means short supply chain, Spanish-language documentation, Spanish-speaking tech support and replacement boards available next day rather than next week. For a homeowner calling Agua Therm in August at the height of the cooling season, that local supply chain is the difference between fixed-tomorrow and waiting-three-weeks

    Universal Compatibility — Aidoo / Aidoo Pro Bridges to Daikin Inverter

    Airzone Flexa talks to almost every HVAC manufacturer's inverter platform via the Aidoo and Aidoo Pro range of gateways. On this villa it is paired with Daikin concealed ducted indoor units — the Aidoo / Flexa pairing modulates the Daikin compressor's frequency to match the open-zone demand, instead of just throttling air through closed dampers. That keeps the Daikin running at its sweet-spot efficiency

    eu.bac Certified Control Accuracy

    Airzone's Flexa range carries eu.bac (European Building Automation and Controls Association) certification — independent third-party verification of control accuracy. eu.bac-tested zone controllers deliver setpoint accuracy on the order of ±0.4 °C rather than the ±1.5–2 °C typical of non-certified consumer thermostats. The owner of the villa actually feels the room hold its temperature instead of swinging

    True Room-by-Room Control — Not Just Damper Throttling

    A lot of cheap retrofit zoning systems are just glorified motorised dampers — they choke off airflow to a closed room but the AC unit still runs flat-out, dumping cold air into the rooms that did not ask for it (or worse, freezing the indoor coil). Airzone's Flexa + Aidoo pairing modulates the Daikin compressor itself, so when only one zone is calling, the outdoor unit ramps down to suit. That is what makes zoning actually save electricity rather than just hide the wasted cooling

    Large Daikin concealed ducted indoor unit on floor pre-install — coil visible

    Large Daikin indoor unit — coil visible before hanging

    Side view of the large Daikin indoor unit showing coil depth and chassis

    Coil depth and chassis — size reference

    Underside view of installed Daikin indoor unit in ceiling void — condensate tray levelled

    Underside after hanging — condensate tray pitched to drain

    Why Daikin Inverter Ducted Was the Right Match for the Airzone Front End

    The Airzone Flexa zoning system is brand-agnostic on paper, but in practice it pairs best with manufacturers whose inverter platforms expose proper protocol-level integration. Daikin is one of the strongest of those — and on a Marbella villa that is going to run hard from May to October, you want the inverter to be a known, serviceable, local-spares-stocked brand. Specific to this install:

    • Daikin concealed ducted indoor units sized for the bathrooms / wet rooms and the main living areas — installed inside the ceiling void on threaded-rod hangers with vibration isolators (visible in the in-ceiling install photos), so the only thing visible in the finished room is the supply grille and the return grille
    • Daikin R32 inverter outdoor units (one larger, one smaller — both visible on the side terrace) — R32 is the current European standard refrigerant, with a Global Warming Potential of 675 versus 2,088 for the older R410A it replaces (a 68 % reduction)
    • The internal control board on the larger Daikin outdoor (with cover removed and the 'DAIKIN EUROPE N.V., Oostende, Belgium' identification plate visible) is the manufacturer-original PCB — not a third-party board. That matters for warranty
    • Daikin's inverter compressor modulates continuously rather than cycling — paired with the Airzone Flexa, it sits at low capacity for most of the day instead of slamming on and off the way fixed-speed units do
    • All copper line-sets used on this install carry the EN 12735 marking (visible on the white insulation jacket in the vacuum-test photo) — that is the European standard for seamless copper refrigeration tube, and it is what Daikin requires for warranty
    Daikin concealed ducted indoor unit finally hung in bathroom ceiling void — front view

    Concealed ducted indoor unit in position — ready for plenum connection

    Daikin outdoor unit with cover removed showing manufacturer-original control PCB next to R32 refrigerant cylinder

    Original Daikin Europe N.V. PCB — R32 cylinder visible (A2L class)

    Strip-Out Phase: Removing the Legacy Ducting Without Wrecking the Bathrooms

    The two bathrooms on this villa already had ceiling voids — but they were filled with old, oversized fibreglass-lined duct, redundant flexible conduit, and a tangle of disused cables (visible in the strip-out photos). Before any new equipment could be hung, all of that had to come out. This was the most disruptive part of the job for the family, so it was done in one focused day per bathroom:

    • Bathrooms isolated under temporary dust sheeting; ceiling sections cut back along structural lines rather than ragged-edged, so the plasterer's making-good would be straight
    • Old fibreglass-lined rectangular duct (visible on the strip-out photos hanging from the ceiling void) removed in sections — fibreglass-lined duct sheds particles over its lifetime and is no longer recommended for residential use because of indoor-air-quality concerns
    • Redundant flexible conduit and disused cabling pulled out and either re-terminated safely back at the consumer unit or removed entirely after isolation and testing — nothing left live and abandoned in the ceiling void (one of the most common dangerous findings we see in older Costa del Sol villas)
    • Concrete soffit checked for the location of structural rebar before any new percussion-drilled fixings went in — using a rebar detector, not by feel — so the new threaded rod hangers do not damage the slab reinforcement
    • Bathroom fittings (sinks, glass shower enclosures, towel rails all visible in the photos) covered and protected; floor tiles board-covered for the duration of the works
    • All debris bagged and removed at end of day — bathrooms left usable each evening
    Insulated refrigerant line-set running two floors up rendered white wall and under terracotta tiles

    Refrigerant line-set climbing to upper floor — single clean route

    Upper-floor Daikin outdoor unit with aluminium ladder and refrigerant line clipped under eaves

    Upper-floor outdoor unit position — line clipped under eaves

    Electrical Work — REBT-Compliant, Inverter-Aware

    Ducted AC is not just a refrigeration job — it is a serious electrical job, with multiple inverter loads, condensate pumps and Airzone's low-voltage control bus all sharing the villa's wiring. Our REBT-qualified electricians, with formal certification provided by our preferred Costa del Sol partner LIT Electricians SL, completed:

    • Dedicated 230 V spur per outdoor unit, sized for the full-load amps printed on the Daikin nameplate plus the inrush margin required by REBT for inverter loads — no sharing of circuits with sockets, lighting or appliances
    • Type A 30 mA RCBO on every inverter circuit — Type A is required by REBT for inverter-driven equipment because Type AC will not detect the DC fault current components that an inverter can produce. This is the single most common compliance failure we find when auditing other contractors' AC installs in Marbella
    • Low-voltage Airzone control bus (the proprietary Airzone communication wiring between the central module, the zone dampers and the Blueface Zero thermostat) run separately from the 230 V mains in its own conduit — keeps EMI off the bus and keeps the install REBT-tidy
    • Equipotential bonding extended to the metal chassis of both outdoor units and the indoor unit casings — continuity verified and recorded
    • Insulation resistance and earth-loop impedance tested and recorded; IP-rated isolators within sight of each outdoor unit for safe service and emergency shut-off; REBT install certificate issued
    • Working in tight coordination with LIT Electricians SL for the formal electrical certification — handed over to the homeowner alongside the F-Gas log and the system commissioning sheet

    On a multi-zone Airzone install, getting the Type A RCBOs right is non-negotiable. A standard Type AC will pass an installer's first-pass visual but will not trip on the DC-component fault that an inverter compressor can generate during a partial winding failure — that is the exact failure mode where a Type AC kills people. Type A across the board, every time.

    Pressure Testing and Vacuum — The Detail That Separates a Proper Install from a Future Leak

    Two-thirds of the AC failures we are called out to in Marbella in the first three years of life are not compressor failures — they are slow refrigerant leaks at flares, brazed joints or service ports that were never properly tested at install. Our standard pre-commissioning sequence on every Daikin R32 install — including this San Pedro villa — is:

    • OFN (oxygen-free nitrogen) pressurisation of the entire line-set to the manufacturer's pressure-test value, held for 30 minutes minimum on a calibrated digital manifold — no pressure drop accepted (visible on the photo with the black nitrogen cylinder and the Testo 550 manifold)
    • If the OFN test passes, evacuation down to deep vacuum target (typically ≤500 microns / 0.67 mbar absolute) — this boils off any residual moisture inside the pipework, which is what destroys POE oil-based compressors over time
    • Standing vacuum test — close the vacuum pump valve, walk away for 10–15 minutes, and watch for any rise in the absolute pressure. A rise means residual moisture or a micro-leak that the pressure test missed. No rise accepted
    • F-Gas certified refrigerant release from the factory-charged outdoor unit, top-up weighed in by scale where the line-set length required it, recorded on the F-Gas certificate that is handed to the homeowner
    • Final operational pressure check on the Testo 550 with the system running — recorded on the commissioning sheet
    Testo digital manifold during vacuum test — copper flares with valves and EN 12735 insulated line

    Deep vacuum at flares — copper valves and EN 12735 insulation

    Testo 550 digital manifold in R32 mode with black OFN nitrogen cylinder and regulator for pressure test

    Testo 550 R32 mode + OFN nitrogen — calibrated pressure test

    Why Specifying Airzone on a Marbella Villa Actually Matters — Beyond Comfort

    Most villas in San Pedro, Nueva Andalucía, Guadalmina and Marbella central rely on AC for between five and seven months of the year — and AC is typically the single largest electricity load in a Costa del Sol home. The case for spending the extra on a proper Airzone-zoned ducted system rather than a basic single-zone retrofit is straightforward:

    • Bedrooms are only occupied roughly one-third of the day. With basic zoning they cool overnight whether anyone is in them or not. With Airzone Flexa + Blueface Zero scheduling, the zone is simply asleep during the day and wakes up an hour before bedtime — measurable electricity saving
    • Guest bedrooms in a typical Marbella villa might be used six to ten weeks a year. With Airzone, the zone damper stays closed and the inverter never tries to push cold air into a room nobody is in. With a non-zoned system, every supply grille bleeds cooling 24/7
    • The home office gets cooled while the family is on holiday and the rest of the house can sit warm. That is the kind of granular control you only get with a properly designed Flexa system — and it is invisible at the wall (one Blueface Zero master, plus small Airzone room thermostats per zone)
    • Airzone's eu.bac-certified control accuracy means the rooms actually hold setpoint instead of swinging by 2 °C — owners stop fiddling with the thermostat, which alone reduces electricity consumption noticeably
    • Pairing Airzone Flexa with a Daikin inverter (rather than just damper-throttling a fixed-speed unit) means the compressor itself ramps down when only one zone is calling — that is where the real summer electricity bill saving comes from

    Verified Efficiency Facts — Backed by Independent Sources

    Every efficiency claim about modern ducted AC and zoning in this case study is backed by an independent regulator, manufacturer datasheet or industry body — not marketing copy:

    R32 has 68 % lower GWP than R410A — and is required by F-Gas

    R32 has a Global Warming Potential of 675 versus 2,088 for R410A. EU Regulation (EU) 517/2014 — and its 2024 successor (EU) 2024/573 — drives the phase-down of high-GWP refrigerants. R32 is the long-term standard for new residential AC in Europe, classified A2L (lower flammability, low toxicity)

    Source: EU Regulation (EU) 2024/573 on fluorinated greenhouse gases

    Inverter compressors deliver 30–50 % savings vs fixed-speed AC

    Variable-speed inverter compressors run continuously at part-load instead of cycling on/off at full power. This eliminates the inrush and cool-down losses of fixed-speed units and is the primary efficiency advantage of modern residential AC over the previous generation. Daikin's inverter platform is one of the most refined examples in the European market

    Source: European Heat Pump Association (EHPA)

    Air conditioning is recognised as a heat pump under EU RED II

    Directive (EU) 2018/2001 (Renewable Energy Directive II) recognises reversible AC heat pumps as renewable energy when their Seasonal Coefficient of Performance exceeds the benchmark. A correctly zoned Daikin R32 ducted system comfortably exceeds that threshold across the Costa del Sol climate envelope

    Source: European Commission — Directive (EU) 2018/2001 (RED II)

    eu.bac certification is the European reference for control accuracy

    The European Building Automation and Controls Association (eu.bac) certifies room temperature controllers under EN 15500 — Airzone's Flexa range is among the certified products. eu.bac-certified controllers typically achieve ±0.4 °C setpoint accuracy versus ±1.5–2 °C for non-certified consumer thermostats

    Source: eu.bac — European Building Automation and Controls Association

    EN 12735 copper tube is the European standard for refrigerant pipework

    EN 12735 covers seamless copper tubes for refrigerating and air-conditioning systems. The white insulation jacket visible in our pressure-test photo is printed with the EN 12735 reference — this is what every reputable manufacturer (including Daikin) requires for the long-term joint integrity needed to keep R32 contained over the system's lifetime

    Source: European Committee for Standardization — EN 12735

    Verified specification facts in this case study are taken from what is directly visible on the delivered packaging (Airzone Flexa 25 Plus Rectangular model AZC25PCB1MOTU, Airzone Blueface Zero AZCE6BLUEZER0CB, both with their Málaga manufacturer address printed on the box), the Daikin Europe N.V. identification plate on the outdoor unit, the R32 refrigerant cylinder label, the EN 12735 marking on the copper line-set insulation, and the Testo 550 digital manifold display. We have deliberately not published the specific kW capacity, exact COP or serial numbers of the Daikin units because those plates were not clearly readable in the photographs we used — every claim above is 100 % verifiable from what you can see in the photos.

    Expert Insight: Why Airzone Flexa + Daikin Ducted Is the Right Spec for a Marbella Villa
    "If you are spending the money to retrofit ducted AC into a villa in San Pedro, Nueva Andalucía or anywhere on the western Costa del Sol, the worst thing you can do is hide cheap kit in the ceiling. Once it is in, you do not see it again until something goes wrong — at which point you are pulling down a perfectly good plastered ceiling to get at it. That is the whole reason we standardise on Daikin inverter ducted indoors paired with Airzone Flexa zoning on this kind of job. Daikin's concealed ducted units are designed to be hung once and left alone — the bearings, the fan motor, the heat exchanger are all the long-life parts of the range. The Airzone Flexa 25 Plus Rectangular sat on the floor in the delivery photo (model AZC25PCB1MOTU, you can read it off the box) is the rectangular-damper variant of their best-known zoning system — it is the right architecture for ducted concealed indoors feeding rectangular galvanised plenums. The Blueface Zero is the master thermostat, with the small per-zone thermostats handling the rest of the rooms. And the killer detail people miss is that Airzone is built in Málaga — twenty minutes up the road. If a zone module dies in August at the height of the season, we have it on the van the next morning. With imported zoning systems you can be waiting two or three weeks for a board. On a Marbella villa where the AC is the cooling, the heating and the dehumidification all in one box, three weeks is not an option."
    Rob Greeves

    Rob Greeves

    HVAC Director, Agua Therm

    The Electrical Side: Type A RCBOs, the Airzone Bus and Why Ducted AC Is a Serious Electrical Job
    "People underestimate the electrical side of a ducted AC retrofit. From the consumer unit's point of view, you have just added two inverter compressors, half a dozen low-voltage motorised dampers, condensate pumps, an Airzone central module and at minimum one Blueface Zero touchscreen on the wall — every one of which is talking on its own bus. Two things have to be right or the whole install is non-compliant and, more importantly, unsafe. First: every inverter circuit goes on a Type A 30 mA RCBO. Not Type AC. Type AC is blind to the pulsating DC fault current that an inverter compressor can generate during a winding fault — it will not trip when it should, and that is the exact failure mode where someone gets hurt. We do not install Type AC on inverter loads, ever, regardless of what the previous installer used. Second: the Airzone low-voltage communication bus runs in its own conduit, away from the 230 V mains, on dedicated control cable. Run the Airzone bus alongside a cooker circuit and you will get intermittent zoning faults that nobody can diagnose for months. On this San Pedro villa we did a full insulation resistance test, full earth-loop impedance test, full RCBO trip test, and signed the REBT install certificate in coordination with LIT Electricians SL — the owner has the paperwork, signed, for any future inspection or insurance enquiry."
    Craig Whitham

    Craig Whitham

    Electrical Director, Agua Therm

    Installation Process — From Bare Ceiling to Commissioned System

    Our certified technicians completed the full ducted AC retrofit across the villa over a planned five-day window, around an occupied home with minimal disruption to the family:

    1. 1Site survey: room-by-room heat-load calculation (cooling and heating), measurement of ceiling-void clear depth above each planned indoor unit, route survey for the refrigerant line set up the external wall, electrical capacity check at the existing consumer unit
    2. 2Equipment delivery and unboxing: Airzone Flexa 25 Plus Rectangular zoning kit (AZC25PCB1MOTU), Blueface Zero master thermostat (AZCE6BLUEZER0CB) and Daikin concealed ducted indoor units + outdoor units staged on site
    3. 3Strip-out of legacy ductwork, fibreglass-lined duct, redundant flexible conduit and disused cabling from the bathroom ceiling voids
    4. 4Indoor units hung in the ceiling void on threaded-rod hangers with vibration isolators — checked for level on two axes; condensate tray pitched 1° to drain naturally
    5. 5Galvanised rectangular plenum + insulated flexible final connections sized for the calculated airflow per room; supply and return grilles set out so the cooled air sweeps across the room rather than dumping on one spot
    6. 6External refrigerant line-set run in a single clean route up the rendered white wall, secured with brass-lined clips, clipped under the terracotta roof tiles for the horizontal run, and dressed in a continuous white UV-stable trunking where exposed
    7. 7Outdoor units set on the side terrace on anti-vibration rubber feet, mounted on the original cardboard packaging during the cure of the new pad to keep them off the deck timber, with the larger Daikin and the smaller Daikin paired to feed the upstairs and downstairs zones independently
    8. 8OFN (oxygen-free nitrogen) pressure test to manufacturer's pressure on the full line-set — held for 30 minutes, no pressure drop (visible regulator and digital manifold readings in the pressure-test photos)
    9. 9Deep vacuum on a Testo 550 digital manifold down to the manufacturer's micron target (typically ≤500 microns for Daikin R32 splits) and held under standing vacuum to confirm no residual moisture or micro-leaks before refrigerant release
    10. 10F-Gas-certified refrigerant release from the factory-charged outdoor units; top-up charge weighed in by scale where line-set length required it, recorded on the F-Gas log
    11. 11Dedicated REBT 230 V circuits run from the consumer unit to each outdoor unit on Type A 30 mA RCBOs; IP-rated isolators within sight of each unit
    12. 12Airzone Flexa central module commissioned, every motorised damper individually tested for open / closed / modulating travel, Blueface Zero master thermostat paired with each zone, and the Aidoo / Flexa bridge to the Daikin inverter validated end-to-end
    13. 13Full system commissioning: cooling cycle, heating cycle (heat pumps work both ways), defrost cycle test on the outdoor units, owner walkthrough on Blueface Zero scheduling, eco mode and per-zone setpoints, REBT install certificate issued in coordination with LIT Electricians SL
    Two Daikin outdoor units on upper terrace with refrigerant line climbing cleanly up rendered white wall — San Pedro villa

    Final view: two Daikin outdoors on terrace, refrigerant line dressed and clipped cleanly

    Installation Results

    Airzone Flexa 25+

    Zoning System

    R32 (GWP 675)

    Refrigerant

    ≤500 microns

    Vacuum Target

    ±0.4 °C (eu.bac)

    Control Accuracy

    Airzone Flexa 25 Plus + Daikin R32 Ducted — Verified Technical Facts (from on-site documentation)

    The facts below are taken directly from what is visible on the delivered Airzone packaging, the Daikin Europe N.V. identification plate, the R32 cylinder label, the EN 12735 marking on the copper line-set insulation, and the Testo 550 digital manifold display. We have deliberately omitted any figure (e.g. specific Daikin kW rating, exact serial number) that we cannot read directly from the on-site photographs, in order to keep every entry in this table 100 % verifiable.

    Airzone packaging: Flexa 25 Plus Rectangular AZC25PCB1MOTU + Blueface Zero AZCE6BLUEZER0CB — visible technical reference
    Zoning SystemAirzone Flexa 25 Plus Rectangular
    Airzone Zoning Model CodeAZC25PCB1MOTU (visible on box)
    Airzone Master ThermostatBlueface Zero (capacitive colour touchscreen)
    Airzone Thermostat Model CodeAZCE6BLUEZER0CB (visible on box)
    Airzone Manufacturer AddressParque Tecnológico de Andalucía, C/Marie Curie, 21 — 29590, Málaga (Spain) — MADE IN SPAIN
    Indoor UnitsDaikin concealed ducted (ceiling-void hung on threaded-rod hangers + vibration isolators)
    Outdoor UnitsDaikin R32 inverter — two units serving the upstairs and downstairs zones independently
    Daikin Manufacturer PlateDaikin Europe N.V., Oostende, Belgium (visible on outdoor unit identification plate)
    RefrigerantR32 (HFC, lower-GWP, A2L safety class)
    Refrigerant GWP675 (versus 2,088 for R410A — 68 % lower)
    Copper Line-Set StandardEN 12735 (visible on white insulation jacket in pressure-test photo)
    Pressure Test MediumOFN (oxygen-free nitrogen) — visible black cylinder + regulator
    Vacuum Target≤500 microns / 0.67 mbar absolute (Daikin spec)
    Commissioning ManifoldTesto 550 digital (R32 mode active — visible on display)
    Power Supply230 V single-phase, 50 Hz (dedicated REBT spurs per outdoor unit)
    Electrical Protection (per outdoor unit)Type A 30 mA RCBO + IP-rated isolator in sight
    Control BusProprietary Airzone low-voltage bus in dedicated conduit
    MountingIndoor units on threaded-rod hangers + vibration isolators; outdoor units on anti-vibration rubber feet

    Visible packaging labels (Airzone Flexa 25 Plus Rectangular AZC25PCB1MOTU + Blueface Zero AZCE6BLUEZER0CB), Daikin Europe N.V. identification plate, R32 cylinder label, EN 12735 marking on copper line-set insulation, Testo 550 manifold display and Airzone manufacturer datasheet

    Why Airzone for Ducted Air Conditioning Installation in Marbella

    Airzone is the strongest specialist zoning brand on the western Costa del Sol — and the right fit for villa work in San Pedro de Alcántara, Nueva Andalucía, Guadalmina, Puerto Banús and the rest of Marbella:

    • Designed, engineered and built in Málaga (Parque Tecnológico de Andalucía, C/Marie Curie 21, 29590) — local supply chain, parts within 24–48 hours during the cooling season
    • Full range of compatible architectures — Flexa Standard, Flexa 25 Plus Rectangular (this job), Flexa 4.0 — covering every common ducted AC layout in residential villa work
    • Aidoo and Aidoo Pro gateways for direct integration with the inverter compressor of Daikin, Mitsubishi, LG, Fujitsu, Hitachi, Panasonic, Samsung and most other premium AC brands
    • Blueface Zero capacitive colour touchscreen master thermostat (AZCE6BLUEZER0CB) — visible, premium-feel control surface that matches the finish of a high-end villa
    • eu.bac-certified control accuracy under EN 15500 — independently tested, not self-declared
    • Full scheduling, eco modes, holiday modes, integration with Alexa, Google Home and Apple HomeKit via the Airzone Cloud app — for owners who actually want to use what they have paid for
    Electrical Certification Provided by LIT Electricians SL

    All electrical work for this ducted air conditioning installation in San Pedro de Alcántara was carried out by Agua Therm's REBT-qualified team, with formal electrical certification provided by our preferred Costa del Sol partner, LIT Electricians SL. LIT Electricians SL covers Marbella, Mijas, Alhaurín el Grande and across the Costa del Sol, and specialises in heat-pump and AC electrical infrastructure, consumer-unit upgrades, REBT documentation and Type A RCBO protection for inverter-driven equipment.

    Visit LIT Electricians SL

    Location: San Pedro de Alcántara, Marbella

    Agua Therm provides professional Airzone-zoned ducted air conditioning installation in Marbella and across the Costa del Sol, including San Pedro de Alcántara, Nueva Andalucía, Guadalmina, Puerto Banús, Benahavís, Estepona, Sotogrande, Manilva, Casares, Mijas, La Cala, Fuengirola and Benalmádena.

    Frequently Asked Questions — Ducted Air Conditioning Installation Marbella

    Need Ducted Air Conditioning Installation in Marbella, San Pedro or the Costa del Sol?

    Agua Therm handles the full ducted air conditioning installation package in Marbella and across the Costa del Sol: supply of the Daikin R32 inverter outdoor units and concealed ducted indoor units, full Airzone Flexa zoning with Blueface Zero master thermostat, OFN nitrogen pressure test, deep vacuum to 500 microns, F-Gas commissioning, REBT-compliant electrical work and full install certification — with electrical certification by LIT Electricians SL. Free on-site survey anywhere on the Costa del Sol.

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    Airzone Flexa 4.0 + Daikin

    Also see

    Airzone zoning serviceMarbella HVAC installationsAll case studies

    About the Author

    Ben Hayden

    Ben Hayden

    English-Speaking Electrician & Independent Energy Advisor

    Ben Hayden is an English speaking electrician and independent energy advisor based in Marbella, Spain, with over 15 years of electrical experience across Europe. He provides independent energy and electrical checks for overseas property owners and managers across the Costa del Sol — helping clients cut electricity bills, navigate Spanish regulations, and make confident decisions on solar PV, heat pump, EV charger and battery storage projects.

    Ben advises in plain English on projects where the paperwork is in Spanish and the stakes are high. His writing has appeared in ExpatArrivals, The Olive Press, Euro Weekly News, BuildingTalk and pv magazine.

    ben-hayden.cominfo@ben-hayden.com+34 711 004 350Connect on LinkedInFollow on Facebook