For decades R-22 was the standard refrigerant in commercial and industrial refrigeration, and plenty of cold rooms in operation still run on it. Today it is being phased out in Brazil, under the country's commitment to the Montreal Protocol: supply shrinks, the price rises and every leak becomes a replenishment problem. There is no obligation to shut down a system that works, but there is an economic expiry date. This guide explains what weighs in the decision between living with R-22, adapting the system to a current refrigerant or replacing it in stages.
What weighs in the decision
-
Where R-22 stands
It is an HCFC, being phased out under an international agreement Brazil is part of. Use in existing equipment remains allowed, but imports and production fall in stages, and the refrigerant gets more expensive and harder to find every year.
-
The cost of every leak
In an older system, a leak is a matter of when. With R-22 scarce, recharging costs more and can take time; a system that needed frequent top-ups is already paying the bill for a replacement without having replaced anything.
-
Age and condition of the compressor
A compressor near the end of its life changes the math: adapting the refrigerant on a tired compressor buys little time. A compressor in good condition, with a clean history, is a candidate for adaptation.
-
Compatibility of refrigerant, oil and components
Not every alternative refrigerant suits every system: capacity, pressures, discharge temperature, lubricating oil, elastomers and the expansion valve have to be assessed together. The choice is technical, made in the diagnosis, not from a catalogue.
-
Capacity after the adaptation
Some alternative refrigerants deliver less capacity or efficiency than R-22 in the same equipment. If the room already runs at its limit, adapting may not be enough, and replacing components enters the math.
-
Energy use
Older systems usually use more energy: high condensing temperature, old controls, components outside their ideal conditions. The retrofit measures energy use before and after each stage; the energy saving can pay for part of the modernisation.
-
Criticality and shutdown windows
A room that cannot stop calls for a staged plan and an agreed window; a full replacement requires product logistics. What a shutdown costs defines how much it is worth bringing forward.
-
The refrigerants that come next
A good share of the first-generation alternatives is also being phased down for its high global warming potential. In a long-term decision, look at the trajectory of the chosen refrigerant, not only today's availability.
The three paths
Live with it: keep R-22 while the system is stable, with rigorous preventive maintenance and leak control, accepting the risk of expensive recharges. Adapt: change the refrigerant to a compatible alternative, with the oil, component and setting adjustments the diagnosis indicates, keeping the equipment. Replace: change the system, at once or in stages, when the set is at the end of its life, the capacity no longer meets demand or the energy use does not pay. The technical audit assesses the system, indicates the path and documents the assumptions; after each stage, energy use is measured before and after.
When to call Frio Ideal for an assessment
- An R-22 system that needed a refrigerant top-up more than once
- A compressor or condenser more than a decade old with no history
- An energy bill high for the size of the operation
- A room that does not reach temperature at peak times
- A planned expansion or change of product
- Doubt whether the available refrigerant suits your system
Frio Ideal's retrofit starts with a technical audit of the system, for equipment from any manufacturer, with a staged plan prioritised by criticality and estimated return, documented assumptions and energy use measured before and after. For a failure in progress, the corrective on-call service runs 24/7.
How to prepare without rushing
Build the refrigerant inventory of your fleet and record every top-up with quantity and cause. Prioritise what combines three things: R-22, high criticality and a history of leaks. Ask for the plan to come with assumptions and with energy use measured before and after, so the next decision has numbers. And do not wait for the big leak: the best time to decide is while the system is running.
FAQ
Is R-22 banned?
Not for anyone who already has the system: use in existing equipment remains allowed. What is being phased out is the supply, in stages, and that makes recharging more expensive and harder.
Can I just change the gas and carry on?
Sometimes. It depends on the alternative refrigerant's compatibility with the compressor, the oil and the components, and on the capacity the room needs. The diagnosis says; swapping from a catalogue can cost you the compressor.
Do I have to stop the operation for the retrofit?
The plan is staged, with agreed windows and priority by criticality, to minimise interruptions. Whatever requires a shutdown is announced beforehand, with the product logistics.
Let's assess modernisation
Tell us the city and state, current issues and, if known, the system's age and capacity.
- 24/7 emergency service
- In-house engineering in the field
- Over 15 years in operation
- Smart Cold authorized service provider