CO₂ FILTRATION FOR BUILDINGS

Healthier indoor air. Up to 15% lower total building energy use. Using the HVAC you already have.

Maxairea removes CO₂ directly from building air using regenerative filtration and intelligent heating, ventilation and air conditioning control (HVAC), helping commercial buildings maintain high indoor air quality while reducing unnecessary energy demand.

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Diagram: outdoor and recirculated air pass through an air-handling unit with a Maxairea CO₂ filtration stage, CO₂ is captured and regenerated, and supply air returns to the building with reduced HVAC load
Up to 15%
Lower total building energy use
Up to 50%
Less outdoor air to heat, cool and move
24 m³
Fresh air per person per hour, always kept
OFFICES · HOTELS · SCHOOLS · THEATRES · CINEMAS · SHOPPING CENTRES · RESIDENTIAL TOWERS
The problem

Why ventilation costs so much energy

It happens in four simple steps.

  1. 01

    People breathe out CO₂

    Every person in the building adds CO₂ to the air, all day long.

  2. 02

    Outdoor air is pulled in

    The only way to get the CO₂ down is to dilute it with fresh outdoor air.

  3. 03

    That air must be conditioned

    All that outdoor air has to be heated, cooled and pushed around by fans.

  4. 04

    The energy bill goes up

    Conditioning ventilation air can be up to a quarter of a building's energy bill.

Ventilate less and people notice. Ventilate more and the bill grows. That is the trade-off we remove.

What you gain

Remove the CO₂, and the trade-off disappears.

One change at the air-handling unit, four things you get back.

Fresher air

CO₂ stays low all day, so meeting rooms and busy floors stay comfortable.

Class A air at TEMA Fine Food

Less energy used

Less outdoor air means less heating, less cooling and less fan power.

Up to 15% lower energy use

Keep your HVAC

We add the unit to your existing air handler in the technical room. No new ducts.

Retrofitted at SPIE, Elsloo

Nothing to replace

The CO₂ filter cleans itself while it runs, so there is no cartridge to swap.

Regenerative by design
How one change flows through the building
CO₂ filtered out
Less outdoor air needed
Lower heating, cooling & fan load
Lower energy cost and CO₂ footprint
How it works

Air in. CO₂ out. Filter restored. Less outdoor air to condition.

Conventional ventilation

Full outdoor-air volume heated, cooled and moved to dilute CO₂.

With Clever Air Care

Up to 50% less outdoor air to condition, with 24 m³ of fresh air per person per hour always retained.

See how it worksMEASURED
Next step

See what your building could save.

Run your numbers in the savings calculator and get a first estimate in minutes.

See what your building could save.Calculate Your Savings
The evidence

Measured in real buildings — and labelled honestly.

We separate what has been measured from what has been calculated. Every figure below carries its evidence level.

Up to 15%
Lower total building energy use
MEASURED
Up to 50%
Less outdoor air to heat, cool and move
MEASURED
24 m³
Fresh air per person per hour, always retained
Measured
Existing HVAC
Integrated into your current installation
Measured
TEMA Fine Food Office — Cuijk, the Netherlands
001 / CUIJK

TEMA Fine Food Office

Cuijk, the Netherlands · Live Deployment
Indoor Air Quality
Class A
Energy Label
TBA
Total Energy
TBA
SPIE Office — Elsloo, the Netherlands
002 / ELSLOO

SPIE Office

Elsloo, the Netherlands · Optimizing Phase
Indoor Air Quality
Class A
Energy Label
TBA
Total Energy Saving
TBA
The Green Village — Delft, the Netherlands
003 / DELFT

The Green Village

Delft, the Netherlands · Demonstration
Installation
October 2026
Bisonspoor Police Station — Maarssen, the Netherlands
004 / MAASSEN

Bisonspoor Police Station

Maarssen, the Netherlands · Demonstration
Design airflow reduction
~33%
Heating + cooling capacity reduction
~20 kW
How to read our numbers
  • MeasuredMetered result from an operating building.
  • Independently validatedReviewed or verified by a third party.
  • LaboratoryResult from controlled test conditions.
  • MEASUREDEngineering calculation based on building inputs. Actual results vary by building.
  • Screening estimateIndicative only. Confirmed during the building assessment.
View project resultsResearch & validation
What happens next

Three steps, and you know where you stand.

  1. 1
    Assess your building

    You share building type, occupancy, operating hours, ventilation design and current energy use. We establish a measured baseline.

    About 30 minutes of your time
  2. 2
    See the opportunity

    You receive a building-specific view of achievable outdoor-air reduction, energy saving, indoor air quality impact and installation approach.

    Within two weeks
  3. 3
    Install and verify

    We integrate the system into your air-handling unit around your operating schedule, commission it, and measure performance against the baseline.

    Planned around your building
Where it fits

Buildings with high occupancy and long operating hours.

Offices

Dense meeting rooms and peak-hour occupancy driving oversized ventilation.

Hotels

Guests pay for comfort — savings cannot come from running the system less.

Schools & universities

CO₂ levels affect concentration; Frisse Scholen sets clear IAQ expectations.

Theatres & cinemas

Very high occupancy in short bursts, with large ventilation swings.

Shopping centres

Long operating hours and large conditioned volumes.

Public & healthcare buildings

Strict air-quality requirements alongside energy-performance obligations.

Solutions by building type

Latest

All updates
Before you get started

Questions building owners ask

Will Maxairea replace my current HVAC system?+

No. Clever Air Care is added to a suitable existing air-handling installation. The building assessment confirms how it integrates with your specific system.

How much energy will my building actually save?+

Engineering calculations indicate up to 15% of total building energy use in high-occupancy buildings with long operating hours. Your result depends on occupancy, operating hours, climate, ventilation demand and the current efficiency of your HVAC. We will not quote a figure for your building before the assessment.

Does less outdoor air mean worse indoor air?+

No. CO₂ is removed rather than diluted, and the controller enforces a minimum of 24 m³ of fresh air per person per hour at all times. IAQ is measured continuously and reported.

Will installation disrupt operations or add maintenance?+

Installation takes place in the technical room and is planned around your building's operating schedule. The filter is regenerative, so there is no consumable media to replace as part of routine HVAC maintenance, subject to the final system design and service agreement.

Can the result be defended to an auditor or asset manager?+

Yes. Every project uses a pre-installation measured baseline and post-installation verification of CO₂, airflow and HVAC energy consumption, so the improvement is documented rather than asserted.

Next step

Find out what your building could save

A building assessment shows whether maxairea Clever Air Care product suits your property, what outdoor-air reduction is realistic, and what the installation involves — before you commit to anything.

Request a building assessmentSee how it works
See what your building could save.Calculate Your Savings