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Frequently Asked Questions
What makes these the direction of travel?
Much lower global warming potential.
They behave close enough to what they replace.
Equipment design did not have to start again.
That allowed rapid adoption.
HFC quotas make the move economic as well.
Ranges are now broad across equipment types.
What does A2L mildly flammable actually mean?
A genuine category, not a technicality.
It will burn under the right conditions.
Ignition is harder than with hydrocarbons.
Charge limits apply by room size.
Detection and ventilation may be required.
Design it in rather than discovering it.
Which calculation catches projects out?
Charge against room volume.
Small enclosed rooms are the problem case.
A large charge may not comply without mitigation.
Mitigation means detection, ventilation or redesign.
Find out before positioning indoor units.
Afterwards the options are expensive.
Do technicians need anything different?
Training and appropriate tooling.
Recovery equipment must be rated for A2L.
Leak detection instruments differ.
Hot work procedures change near the plant.
Certification requirements vary by jurisdiction.
Confirm the service provider is equipped.
What does temperature glide require?
Reading the correct pressure-temperature columns.
Blends evaporate across a range, not a point.
Superheat set as for a single substance is wrong.
Charging must be done as liquid.
Vapour charging changes the composition.
That applies to topping up too.
Is the building ready for them?
That is the real question for most buyers.
Room volumes and plant positions matter.
Detection and ventilation provision may be needed.
Maintenance arrangements have to suit.
New buildings design it in easily.
Retrofits need the assessment first.
How do availability and price compare now?
Both have improved as production scaled.
Early premiums have narrowed considerably.
HFC prices have risen to meet them.
Equipment ranges are broad across types.
Regional availability still varies.
Confirm supply where the plant will sit.