Mathieu Balay
Director of Engineering
Sirayooth Co., Ltd.
Performance
The product is a combined PSHE cascade heat exchanger. It has been providing the expected capacity.
Impact report · 2026
Vahterus
Their durable, compact, and custom-made heat exchangers are designed for energy efficiency and demanding conditions.
KALANTI, FINLAND
1.60M
Cumulative tonnes CO₂e avoided
since 2024 · GWP 20
since 2024 · GWP 20
610k
tonnes CO₂e
in 2026 · GWP 20
in 2026 · GWP 20
1t
TFA avoided
in 2026
in 2026
3rd
consecutive year
ATMO Approved
ATMO Approved
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 Vahterus avoided over the lifetime of 2025's equipment.
Stage 1 · Scale check
1 metric ton of CO₂e is an 8-meter cube.
A petrol car emits roughly that much in six months.
In real-world terms
What it adds up to.
82k
homes / year
powered for a year on the same footprint
142k
petrol cars off the road
for one year of driving emissions avoided
2.5B
km not driven
distance equivalent never burned in a tank
03
Hidden pollutant
TFA: the forever chemical you haven't heard of.
Trifluoroacetic acid is an ultra-short-chain PFAS that leaks from synthetic refrigerants and accumulates in rainwater. Natural-refrigerant systems leak zero.
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.
04
Growth
Cumulative avoided CO₂e emissions over the years.
Vahterus has been ATMO Approved since 2024 — 3 consecutive years of independently verified impact.
0
metric tons of CO₂e · GWP 20 years
2023
2024
2025
0
metric tons of CO₂e · GWP 100 years
2023
2024
2025
05
Voices from the field
What operators say after a year on natural refrigerants.
Mathieu Balay
Director of Engineering
Sirayooth Co., Ltd.
Quality & Reliability
We haven't experienced any issues with the product since the system was started.
Mathieu Balay
Director of Engineering
Sirayooth Co., Ltd.
Safety
The product is PED certified. Although it is not a requirement in Thailand, it is accepted here.
Mathieu Balay
Director of Engineering
Sirayooth Co., Ltd.
Service
We have been using Vahterus products for 15 years and always get good technical support and prompt responses. The delivery time for this order was in line with our project schedule and complied with the initial commitments from Vahterus at the time of order.
Mathieu Balay
Director of Engineering
Sirayooth Co., Ltd.
Satisfaction
We will very likely work with this company again. Apart from the good technical and commercial support we get from them, they provide a unique equipment design that fits our requirements for some projects.
Mathieu Balay
Director of Engineering
Sirayooth Co., Ltd.
Training
They shared with us their refrigerant handbooks. Although they did not provide trainings, we meet regularly to discuss their latest product developments and new application opportunities.
Baris Sahin
Managing Director - Ammonia Engineer
Offitec Group AG
Performance
Yes, very clean and professional work by Vahterus. The performance meets expectations and the machines run flawlessly on our end.
Baris Sahin
Managing Director - Ammonia Engineer
Offitec Group AG
Quality & Reliability
The quality is outstanding, there are simply no words for it. The reliability has been excellent from the quotation phase through to delivery, and we have never experienced any issues. A top supplier for plate & shell.
Baris Sahin
Managing Director - Ammonia Engineer
Offitec Group AG
Safety
Yes.
Baris Sahin
Managing Director - Ammonia Engineer
Offitec Group AG
Service
We have not used any service so far. The delivery was organized by us as a company, but Vahterus was very supportive on site.
Baris Sahin
Managing Director - Ammonia Engineer
Offitec Group AG
Satisfaction
We are currently still working with the company and will continue to do so in the future. Transparency and speed are very important to us, and we get both from Vahterus. As a Swiss manufacturer, we rely on high quality, which we also receive from Vahterus. At present, we have no complaints as OffiTec Heating & Cooling.
Baris Sahin
Managing Director - Ammonia Engineer
Offitec Group AG
Training
Yes they have, but we don't need it.
06
The company
Vahterus: company profile.
Their durable, compact, and custom-made heat exchangers are designed for energy efficiency and demanding conditions. Through continuous innovation, automated production, and collaboration with customers, Vahterus holds several global patents and awards for its environmentally friendly products.
Work with Vahterus
Tell us about your project — we'll route the conversation to the right team.
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.