Why choose a natural refrigerant?

Name: Green chillers · Natural refrigerants
Brand: FRIMONT

Because it does not deplete the ozone layer, its GWP is zero or near zero and it does not depend on the HFC phase-down schedule, which limits the supply of those refrigerants over the years. The unit you install today is not tied to an increasingly restricted gas.

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Chillers and liquid chillers

Green chillers · Natural refrigerants

Chillers with ammonia, CO₂ or hydrocarbons: natural refrigerants with no impact on the ozone layer and zero or near-zero GWP.

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Technical documentation

FRIMONT ammonia chiller with screw compressor and vessels — Ammonia chiller.

Applications

What it solves.

Natural refrigerants (ammonia, CO₂ and hydrocarbons) do not deplete the ozone layer, have zero or near-zero GWP and are not covered by the HFC phase-down. We design our green chillers with the natural refrigerant that best suits each process and with the safety criteria each one requires.

Meat plants, food factories and logistics centers with ammonia machine rooms.
Low-temperature processes with CO₂ or ammonia/CO₂ cascade systems.
Companies with decarbonization targets looking for refrigerants outside the HFC phase-down.

Meat processing plants Food and beverage Cold logistics centers

Configurations

A configuration tailored to your application.

Technical selection defines the equipment and its integration with the process.

Ammonia · R-717

The natural refrigerant with the longest track record in industry: GWP 0 and very good efficiency. It is toxic, so we design with reduced charge, machine room, ventilation and detection.

CO₂ · R-744

GWP 1, non-flammable and lower toxicity (class A1). It runs at high pressures, so it is used mainly at low temperature, in cascade with ammonia and for heat recovery.

Hydrocarbons · R-290 and R-1270

Propane and propylene: near-zero GWP and good efficiency, but highly flammable (class A3). They are used in compact chillers with a small refrigerant charge, installed outdoors.

Standards we work to

We design, install and maintain natural refrigerant systems to internationally recognized safety standards.

Standards

ANSI/IIAR 2: safe design of closed-circuit ammonia refrigeration systems.
ANSI/IIAR 6: inspection, testing and maintenance.
ANSI/IIAR 7: operating procedures.
ANSI/IIAR 9: minimum safety requirements for existing systems.
ANSI/IIAR CO2: safety of closed-circuit CO₂ refrigeration systems.

Technical data

Reference values.

Natural refrigerants

ASHRAE 34 safety class and 100-year global warming potential (GWP).

Refrigerant	ASHRAE 34 class	GWP	Strength	Main precaution
R-717 · Ammonia	B2L	0	Efficiency at large capacities	Toxicity
R-744 · CO₂	A1	1	Non-flammable, low temperature	High working pressures
R-290 · Propane	A3	3	Efficiency in compact units	Flammability
R-1270 · Propylene	A3	2	Medium and low temperature	Flammability

None of these refrigerants is covered by the Kigali Amendment HFC phase-down. 100-year GWP: U.S. EPA Technology Transitions GWP Reference Table, rounded; ammonia, 0 (the EPA assigns it 1).

Selection

How we define the solution for your process.

We start from what you need to achieve and your facility conditions. We guide you through defining requirements and selecting an appropriate configuration. You do not need to have all this data to start the conversation.

What we evaluate during technical definition

Refrigerant and temperature: Fluid temperature, capacity and whether the site already has an ammonia or CO₂ installation.
Safety and location: Refrigerant charge, machine room, ventilation, detection and distance to people and public areas.
Operation and maintenance: Trained staff, operating procedures and periodic inspections.

Documentation

Technical documentation.

Request technical documentation for the configuration required by your process. Tell us about your application and operating conditions to guide the inquiry.

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Engineering and integration

Scope is defined with you.

From equipment selection to integration, installation, and commissioning, we agree on what the project needs and how it connects to your facility. Control systems and after-sales service are integral parts of that conversation.

What we can undertake