Accelerating Clean Cooling & Heating

Contact UsNewsletter
01

Why this matters

Most refrigeration runs on chemicals that warm the planet, or quietly poison it.

HFCs warm the atmosphere up to 14,000× more than CO₂. Their HFO replacements break down into TFA, a forever chemical now detectable in rain, ice, and human blood.

The answer

CO₂, ammonia, hydrocarbons. Proven for over a century. They don't warm the planet, and they don't leave a forever chemical behind.

Natural refrigerants avoid both.

02
Primary metric

A year of avoided emissions, made visible.

GHG emissions UNIC-AIR avoided over the lifetime of 2025's equipment placed in the market.

UNIC-AIR · 2025

18,000metric tons of CO₂e avoided.

Over the lifetime of 2025's equipment placed in the market. The comparisons that follow show what that volume actually looks like.

03
In real-world terms

What it adds up to.

2.4k
homes / year
powered for a year on the same footprint
4.2k
petrol cars off the road
for one year of driving emissions avoided
73M
km not driven
distance equivalent never burned in a tank
0.6%
of Odense Metropolitan Region (2020)'s
annual emissions in 2020
04
Hidden pollutant

TFA: the forever chemical you haven't heard of.

Trifluoroacetic acid is an ultra-short-chain PFAS that forms as a breakdown product of synthetic refrigerants and accumulates in rainwater. Natural refrigerants don't break down into TFA.

Stage 1 · Emission

HFCs and HFOs leak from refrigeration systems.

Synthetic refrigerants escape over the lifetime of every system: installation, service, end-of-life. The leaks are small, but they add up across millions of installations worldwide.

Refrigerant gas leaking from cooling equipment
05
Founder

In the words of the people who built it.

At Unic Air, our commitment to the green transition is more than an obligation. We develop ventilation units that meet today's requirements while shaping tomorrow's solutions — combining natural refrigerants like CO₂ with high energy efficiency to cut climate impact and operating costs without compromising comfort or quality. Our vision is to be the preferred partner for environmentally conscious customers who want sustainable solutions with documented effects. Future-proof ventilation BLUE CO₂ uses a natural refrigerant, placing it outside the EU's F-gas regulation, which is phasing out HFC and HFO refrigerants from 2027. Switching now is economically smart, as demand for compliant solutions is set to grow. Another significant advantage of CO₂ as a refrigerant is that it is PFAS-free. Denmark is already leading EU efforts toward a total PFAS ban.

Henrik Hejlemann Jensen (CEO)
06
Voices from the field

What operators say after a year on natural refrigerants.

Mads Williams
Technical Area Manager
COOP
Service
How was the level of service and technical support?

Yes, we have an ongoing cooperation that we are very satisfied with.

Mads Williams
Technical Area Manager
COOP
Satisfaction
Would you work with this company again?

We are very committed to our cooperation with Unic Air. In our perspective, they are the only company capable of delivering the product we expect.

Mads Williams
Technical Area Manager
COOP
Training
Did the training prepare your team to run the system?

Yes, they often ask us if we want education regarding their products, and they also provide educational sessions for our other service suppliers.

Jesper Thorsgaard
Head of Group Engineering
Salling Group
Performance
How has the system performed over the past year?

Yes, so far, the systems have handled the cold winter conditions well — and we’re hopeful they will perform just as reliably during the summer season.

Jesper Thorsgaard
Head of Group Engineering
Salling Group
Quality & Reliability
How has the build quality and reliability held up?

No breakdowns so far.

Jesper Thorsgaard
Head of Group Engineering
Salling Group
Service
How was the level of service and technical support?

Yes, the startup has gone as planned, and we hope the upcoming service will as well.

Jesper Thorsgaard
Head of Group Engineering
Salling Group
Satisfaction
Would you work with this company again?

We have already ordered the next HAVC units to be installed in 2026.

Jesper Thorsgaard
Head of Group Engineering
Salling Group
Training
Did the training prepare your team to run the system?

No, we do not handle the refrigerant ourselves.

Keld Juul
CEO
Dansk Klimateknik
Performance
How has the system performed over the past year?

The product fulfills our expectations with good performance.

Keld Juul
CEO
Dansk Klimateknik
Quality & Reliability
How has the build quality and reliability held up?

The product demonstrates high reliability and strong performance, with only a few minor issues experienced during the initial start-up phase.

Keld Juul
CEO
Dansk Klimateknik
Safety
How has safety been operating natural refrigerants?

Yes, all applicable safety requirements are fully integrated into the unit.

Keld Juul
CEO
Dansk Klimateknik
Service
How was the level of service and technical support?

Yes, the initial start-up issues were handled very efficiently.

Keld Juul
CEO
Dansk Klimateknik
Satisfaction
Would you work with this company again?

Yes, we have already placed orders for future projects — they are the only supplier of CO₂ units in Denmark.

Keld Juul
CEO
Dansk Klimateknik
Training
Did the training prepare your team to run the system?

We have a collaboration with the supplier regarding the management and operation of natural refrigerant-based equipment.

Mads Williams
Technical Area Manager
COOP
Performance
How has the system performed over the past year?

The product has exceed our expectations.

Mads Williams
Technical Area Manager
COOP
Quality & Reliability
How has the build quality and reliability held up?

The product’s reliability has been excellent overall. We have experienced a few breakdowns, but none occurred within the warranty period and none happened when the product had received the required service.

Mads Williams
Technical Area Manager
COOP
Safety
How has safety been operating natural refrigerants?

Yes. We are absolutely convinced that all safety standards and regulations have been met to the letter.

07
The company

UNIC-AIR: company profile.

Unic Air is a Danish manufacturer that develops, manufactures, and sells customized air handling units (AHUs) for industrial ventilation, comfort ventilation, and retail/food environments. The company provides tailored unit design, integrated heating/cooling configurations, and built-in automation/controls to match project requirements. A core sustainability offering is integrating natural-refrigerant CO₂ (R-744) cooling and heat-pump technology directly into ventilation units.

Work with UNIC-AIR

Tell us about your project. We'll route the conversation to the right team.

Get in touch

Become ATMO Approved

Does your company use natural refrigerants?

The ATMO Approved label is independently verified. Not self-declared, not marketing. If your equipment runs on CO₂, ammonia, hydrocarbons, or water, you may qualify.

Apply for the labelLearn how the process works