Interactive · How cooling works
Every fridge, freezer, AC unit and heat pump on Earth runs on one beautiful loop of physics. Scroll to follow the refrigerant on its journey — from scorching hot to ice cold and back again.
The compressor squeezes low-pressure refrigerant gas hard. Squashing it rockets its pressure — and its temperature soars to around 85°C. Hot, energised gas is pumped onward.
In the outdoor coil, a fan blows fresh air over the hot gas. It dumps its heat outside and condenses into a warm, high-pressure liquid — like steam turning back to water.
The liquid is forced through a tiny valve. On the far side the pressure collapses — and so does the temperature, flash-freezing the refrigerant into an icy cold mist.
Inside your room, the freezing mist soaks up heat from the air and boils back into a gas. Your space gets colder — and the gas heads back to the compressor to go again. Forever.
Fault finder · What servicing prevents
A refrigeration system only works as a loop — weaken one link and the whole chain suffers. Flip the switch and watch what neglect does to the exact same cycle.
A clean condenser sheds heat freely and a strong compressor keeps pressures exactly where the engineers intended. Maximum cooling, minimum running cost.
Keep your cycle healthy
A yearly service keeps coils clean, pressures right and running costs down - and catches small problems while they are still small.