Decentralised Ventilation

At ECS, we believe that a truly sustainable home doesn’t just save energy—it promotes a healthy, breathable environment. That is why we integrate AIRUNIT Decentralised Residential Ventilation Systems by MFH Systems into our green building and historic restoration projects.

Designed for both modern off-grid eco-homes and retrofitted historic buildings, the AIRUNIT series provides a continuous supply of fresh, filtered air without sacrificing your home’s heating efficiency.

Why Choose AIRUNIT Decentralised Ventilation?

Traditional ventilation often means letting valuable winter heat escape through the window. AIRUNIT systems utilise regenerative heat recovery (up to 99%) to keep your home’s climate perfectly balanced, reducing heating costs and completely eliminating the need for complex, space-consuming ductwork.

  • Maximum Energy Efficiency: Heat exchangers capture the heat from outgoing stale air and use it to preheat incoming fresh air.

  • Health & VOC-Free Air: Integrated filters (including optional F7 pollen filters) block dust, allergens, and pollutants, maintaining a pure indoor climate.

  • Summer Night Cooling: Capable of reversing cycles to bring in cooler night air during the hot summer months.

  • Non-Invasive Installation: Ideal for the historic restorations ECS specialises in. Installation requires minimal effort via an insulated NEOPOR® wall duct, avoiding heavy structural alterations.

Systems

AIRUNIT SOLUS 2.0

The perfect all-rounder for high-efficiency renovations and new eco-builds.

  • How it Works: It operates in a continuous two-phase cycle. Phase one extracts stale room air and transfers its warmth to the ceramic heat accumulator. Phase two reverses the airflow, drawing in fresh outdoor air that is preheated by stored energy before entering your living space.

  • Best For: Living rooms, offices, guest rooms, and continuous air quality control with nearly zero heat loss.

AIRUNIT GEMINI

A compact, highly effective system designed for areas with intensive moisture or odour generation.

  • Best For: Bathrooms, kitchens, and smaller, enclosed spaces (such as Tiny Houses or compact eco-pods).

Seamlessly Integrated into Your Eco-Home

Because AIRUNIT systems do not require complex ceiling ducting, they pair beautifully with our natural finishes—like clayworks, cork renders, and traditional lime plasters—without disrupting the architectural integrity of your space. Whether controlled via smart KNX building automation or standalone thermostats, AIRUNIT ensures your home breathes naturally.

Why is Spain Still Using Non-Breathable Insulation?

Why Spanish architects still favour synthetic foam over breathable insulation. Learn about damp, CTE regulations, and the shift to sustainable building in Spain.

Under the Skin: An Exclusive Look at Our Historic Retrofit

Under the Skin: An Exclusive Look at Our Historic Retrofit

The “Free” Insulation Trap: Why Modern Grants Can Ruin Historic Spanish Homes

The “Free” Insulation Trap

From Damp Walls to Dry Homes: Unmasking the True Causes of Damp

From Damp Walls to Dry Homes: Unmasking the True Causes of Damp

The “Lazy Architect” Trap

The “Lazy Architect” Trap

The Real Cost of Restoring a Mountain Ruin

Buying a pile of stones? Don’t underestimate the budget. ECS breaks down the real costs of mountain ruin restoration, from structural shells at 800€/m² to full finishes.

Solar Energy in Asturias: Is an Off-Grid System Worth It?

Can 4 solar panels power an Asturias home? Learn why high-performance arrays and 16kWh batteries are the secrets to energy independence in Northern Spain.

ECS Land Rehabilitation

Just bought a property in Western Asturias? ECS provides professional land clearing, flail mowing, and excavation for historic properties to help you start your renovation.

Beyond Drywall: The Future of Healthy European Homes

Descubre por qué las placas de cáñamo están sustituyendo al yeso tradicional en Europa. Mejora el confort térmico, elimina el moho de forma natural y crea un hogar sano.

Spray Foam & Combustible Insulation in Spain: 2026 Insurance

Is spray foam a risk for home insurance in Spain? Learn about the 2024 Valencia fire impact, pan-European insurer trends, and how to protect your payout in 2026.

MFH systems: Advanced Heating, Cooling & Ventilation | ECS

Discover how MFH systems’ E-NERGY CARBON, AIRUNIT, and IDEAL solutions offer energy-efficient heating, cooling, and ventilation for any building project.

The Real Cost of Building Walls in Europe: From Bare Minimums to Premium Upgrades

Compare the real cost per sqm to build and insulate house walls in Europe. We break down timber frames, solid stone retrofits, EWI, and premium hemp blocks.

How to build a Steico & Huum sauna

Master the art of the “breathable” sauna. Learn how to integrate Steico Flex and Duo Dry panels with HUUM heaters for a high-thermal-mass, eco-friendly sauna build.

The Spanish Solar Revolution: Finding the Perfect Kronoterm Heat Pump for Your Family

Discover how combining Solar PV with Kronoterm heat pumps can cut your Spanish home’s energy bills by 75%. Tailored aerothermia solutions for families of 2 to 6.