Refrigerant flowing through the system. Focused on the expansion device at the start of the evaporator coil.
To make a humming or hissing sound, like an arrow or ball flying through the air; to fly or move swiftly with a sharp hissing or whistling sound., A hissing and humming sound.
the air is depleting from your lungs
A hissing firework is commonly referred to as a "whistle" or "whistling firework." These fireworks produce a high-pitched sound as they ascend into the air, often accompanied by colorful effects when they explode. The hissing sound is created by the rapid release of air or gases as they burn.
The hissing sound when opening a can of soda is caused by the release of pressurized carbon dioxide gas. The pressure inside the can is higher than the surrounding air, so when you open it, the gas rushes out, creating the hissing noise.
The hissing sound of the blue flame on a Bunsen burner is due to the rapid movement of gas molecules as they mix with air and combust. This turbulence creates vibrations and generates sound waves, resulting in the hissing noise.
A ferret that make a hissing sound means they are annoyed or irritated
A hissing sound coming from a chest wound can indicate that air is being sucked into the chest cavity through the wound. This is known as pneumothorax.
Geese make a hissing sound.
maybe clogged air filter or carburettar is sucking air and needs repairing
A water bottle has air pressure because the air inside is compressed due to the volume of the bottle decreasing as you drink from it. When you open the bottle cap, the compressed air rushes out quickly, causing a hissing sound as it equalizes with the surrounding air pressure.
The Walnut Spinx Moth (Amorpha Juglandis) makes a hissing sound by forcing air out of it's spiracles.
it makes hissing vocalizations