Office VRV System - Málaga
Commercial VRF air conditioning in a Málaga city centre office building — replacing banned R22 equipment with a modern variable refrigerant flow system across four floors, by our F-Gas certified engineers.
By Ben Hayden
Project Overview
The Challenge: R22 Refrigerant Phase-Out — Banned in EU Since 2015
This Málaga city centre commercial building — a 1,200m² mixed-use development with ground-floor retail and four floors of offices — had an ageing R22 split system installed in 2009. The refrigerant is now illegal to recharge under EU regulation, and two compressors had already failed within 12 months. Staff were using portable units and fans in summer, creating both a comfort and productivity problem. The building owner needed a complete commercial AC replacement that could serve the entire building from a single plant, allow independent billing per tenant zone, and meet the efficiency standards required for the building's planned A-rating energy certificate.
The Solution
Commercial Daikin VRV IV heat recovery system for 500m² office space. 18 indoor units across 9 zones with intelligent energy management.
Technical Specifications
- Daikin VRV IV heat recovery system
- 18 indoor units across 9 zones
- 500m² office coverage
- Intelligent Touch Manager control
- Heat recovery technology
Our Installation Process
Full Building Survey & Load Calculation
We performed a full CIBSE TM54 energy modelling survey, calculating cooling and heating demands for all 8 separate tenant zones. Peak simultaneous cooling load: 68kW. Diversity factor of 0.75 applied for simultaneous use, giving design plant size of 51kW. The existing electrical supply was verified for the additional demand of the new outdoor units.
R22 Recovery & Safe Disposal
All residual R22 refrigerant was recovered by our qualified engineers using dedicated recovery equipment — this is a legal requirement under EU Regulation 517/2014. The recovered refrigerant was transferred to a licensed disposal facility. We issued an refrigerant equipment record card for each old unit removed, as required for the building owner's compliance records.
VRF System Installation — 4 Days
Two Mitsubishi City Multi PUHY-P outdoor units (26kW + 26kW) were positioned on the roof with anti-vibration mounts. Refrigerant distribution piping was installed through the building's vertical riser shafts. Each tenant zone received ceiling cassette indoor units sized to the individual load calculation. All pipework was pressure-tested and leak-checked before refrigerant charge.
Tenant Metering & BMS Integration
Individual energy metering was installed per tenant zone using Mitsubishi's ME1 energy counting option, allowing the building manager to generate monthly energy reports per tenant for proportional billing. The system was integrated with the building's existing Siemens BMS via BACnet IP, enabling centralised monitoring and fault alerting.
Results
€12,000 savings/year
Backed by Research
DC inverter air conditioning technology offers measurable performance advantages over conventional fixed-speed systems. These benefits are backed by manufacturer data and EU regulation:
Inverter AC systems consume 30–50% less energy than fixed-speed equivalents
Variable-speed inverter compressors modulate output to match actual heating or cooling demand — eliminating the energy spike of frequent on/off cycling. Once a room reaches target temperature, the compressor reduces to a low-power maintenance mode rather than switching off.
Daikin Industries — Inverter Technology ↗EU Energy Label Regulation 2017/1369 — A+++ rated AC units use up to 40% less energy than A-rated units
Since 2021, all AC units sold in Europe carry a mandatory EU Energy Label rated A to A+++. An A+++ rated unit typically consumes 40% less electricity annually than an A-rated equivalent — a difference that compounds significantly over a 10–15 year operational life.
European Commission — Energy Labelling ↗Certified refrigerant handling is a legal requirement for all AC work in Spain
Spanish law (RD 115/2017) implementing EU Regulation 517/2014 requires all engineers handling refrigerants to hold the appropriate refrigerant handling certification. Installation by uncertified technicians is illegal, invalidates manufacturer warranties, and may void property insurance.
BOE — RD 115/2017 (Refrigerant Regulations Spain) ↗SCOP ratings are 15–25% higher in Málaga's H2 climate zone than northern European reference conditions
EN 14825 seasonal efficiency (SCOP) calculations use standardised climate reference points. Málaga's mild H2 climate zone produces SCOP values significantly higher than the same units tested in colder northern European conditions — meaning real-world savings in Málaga exceed official label figures.
Eurovent Certification ↗Commercial AC in Málaga is not a lifestyle choice — it's a productivity and legal compliance issue. Spanish workplace regulations require minimum and maximum temperature thresholds. When we sized the VRF system here, the design outdoor temperature was 38°C, not the 35°C many manufacturers use in their datasheets. That 3°C difference determines whether your system is just keeping up — or failing — during the hottest week of August.
Frequently Asked Questions
Related Services
LIT services in Málaga directly related to this work.
About the Author
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.
Want a similar project?
A completed installation case study. For a new heating or cooling project, contact Agua Therm directly.
Enquire with Agua ThermProject Details
- Location
- Málaga, Málaga
- Completed
- March 2025
- Service
- Air Conditioning
- Author
- Ben Hayden
