Cooling Energy Production & Air Conditioning

Modern cooling and air conditioning systems - split, VRV, chillers, bioclimatic

Managing temperature during the summer months is not just a matter of comfort, but an essential sustainability requirement for every modern building. In this section, we decode all available cooling technologies.

Whether you are looking for the ideal residential air conditioner for your living room, or planning a central concealed duct system (VRV/VRF) for your commercial space, you will find the answers here. Meanwhile, we explore bioclimatic design principles and shading, demonstrating how the right architectural approach can minimise - or even eliminate - the need for mechanical cooling.

Direct Expansion: Residential Air Conditioning (Split & Multi)

The classic air conditioner is the number one cooling choice in Greece. However, technology has evolved rapidly. Learn how to choose the right unit, decode energy labels and ensure ideal temperatures without excessive electricity bills.

AC BTU Calculator: Find the right size.

Discover why calculating based solely on square metres is wrong. How insulation, windows and room orientation determine the actual capacity you need.

SEER & SCOP: How to read the energy label.

What seasonal efficiency ratings mean. Learn how these numbers translate into real money savings during annual air conditioner use.

Residential AC infographic - BTU, SEER, Inverter, multi-split

Multi-Split Systems: One outdoor unit for multiple rooms.

When is it worth avoiding multiple outdoor units on the balcony. Pros, cons and technical limitations of Multi system installations.

Inverter Technology in Air Conditioning: The end of start-stop.

Understand how variable compressor speed delivers completely silent operation, stable room temperature and massive electricity savings.

The ideal position for your Air Conditioner in the room.

The secret to comfort. Where the indoor and outdoor units should be placed to avoid cold drafts on your neck and noise.

Air Quality & AC: Ionisers, UV-C lamps and HEPA filters.

Do modern air conditioners actually clean the air? A realistic, technical look at how these atmosphere purification systems work.

Central & Commercial Air Conditioning (VRF / VRV / Ducted)

When architectural demands increase (luxury homes, offices, hotels), simple wall-mounted units give way to central systems. Concealed installations, premium aesthetics and absolute temperature control in every zone.

VRV / VRF Systems: What they are and how they work.

Variable Refrigerant Flow technology. An in-depth analysis for engineers and professionals on the leading central air conditioning solution.

Heat Recovery VRF (3-Pipe Systems).

The technological marvel that allows simultaneous cooling in one room (e.g. Server Room) and heating in the adjacent office, recycling the energy.

Central AC infographic - VRV/VRF, ducted systems, ductwork

Ducted Air Conditioning: Design Guide.

Aesthetics and engineering guide. How concealed ductwork is integrated into false ceilings, diffuser selection and avoiding air noise.

Fresh Air Introduction in Ducted Systems.

Cooling a commercial space is not enough. See how we ensure clean, oxygenated air through the AC networks without losing energy.

AC for Server Rooms & Data Centres (Close Control Units).

The strict requirements for uninterrupted 24/7 cooling for IT equipment and the critical management of latent loads (humidity) in computer rooms.

Water Chillers & Hydronic Cooling Systems

In heavy industry and large hotel complexes, refrigerant gives way to water as the cooling transfer medium. Explore the world of large chiller plants and pump stations.

Air-Cooled vs Water-Cooled Chillers.

Selection guide for large-scale projects. When to prefer the flexibility of air-cooled technology and when the high efficiency of water-cooled is the only option.

Cooling Towers: Operation & Management.

How open and closed loop systems work in industry, legislative installation requirements and the critical chemical treatment of water.

Water chillers infographic - air-cooled, water-cooled, cooling towers

Chillers with Heat Recovery (Desuperheaters).

How large buildings exploit the "waste" rejected heat from chillers in summer to produce completely free Domestic Hot Water (DHW).

Scroll, Screw and Centrifugal Compressors.

Technical guide for engineers. Dive into the "heart" of large chillers and learn which compressor type performs best depending on the load.

Energy Upgrade of AC Pump Stations.

Modernising old networks. How adding variable speed drives and creating primary-secondary loops reduces consumption.

Passive Cooling, Shading & Bioclimatic Solutions

The cheapest and most ecological air conditioning is the one that never needed to turn on. This is where architecture enters the game. Discover how design, shading and materials can keep the heat outside your building envelope.

Bioclimatic Design & Correct Orientation.

How to exploit the sun's position to warm your home in winter and how to "block" its radiation during the scorching summer afternoons.

External vs Internal Shading: The curtain myth.

We analyse thermal gains. See why interior curtains do not effectively protect you from heat, since the energy has already passed through the glass.

Passive cooling infographic - shading, cool roofs, night ventilation

External Shading Systems (Pergolas & Louvres).

The building's shield. Comparative guide for movable aluminium louvres, perforated fabrics, modern pergolas and architectural Brise-Soleil.

Night Purge Ventilation & Thermal Mass.

The technique of natural cooling. How to "charge" heavy walls and slabs with the coolness of the night, keeping the house cool during the day.

Cool Materials (Cool Roofs) and Green Roofs.

The solution for scorching rooftops. How reflective coatings and planted roofs reduce the roof surface temperature by up to 20°C.

Earth-to-Air Heat Exchangers.

An advanced (but extremely efficient) bioclimatic solution, where the constantly cool subsoil pre-cools the air before it enters the building.

Main HVAC Guide

Return to the full heating-cooling guide for thermal energy production, hydraulic networks, ventilation, automation and energy design.

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Need help choosing?

Planning an air conditioning installation or cooling system upgrade - contact us for expert guidance.