What Is Refrigerant?
Refrigerant is the chemical compound that circulates between the indoor and outdoor units of an AC or heat pump, absorbing heat indoors and releasing it outdoors as it changes between liquid and gas states. It's the working fluid that makes the whole cooling cycle possible.
Why It Matters to You
The refrigerant type used in new equipment is changing industry-wide under the EPA's AIM Act phasedown, which can affect what's available when you replace an aging system.
Practical Guidance
A refrigerant leak is a repair job for a licensed technician — never a DIY task, both for safety and because handling refrigerant requires EPA certification.
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