Another method that can be used to change the state of a material is to put it under pressures that are too extreme for it, forcing it to change state. Pressure can also be used to lower the temperature thresholds which the material requires to change state.
This is because pressure facilitates heat transfer as heat tends to travel form high pressure to low pressure (keep this in mind when we explain the refrigeration cycle).
Under high pressures for example, water is being pushed to solidify and so if you were trying to evaporate water under high pressures, more energy (more heat) would be needed. Whereas water would be much easier to evaporate under lower pressures.
With that being said, you would have an easier time boiling water up on a mountain where air pressures are lower than you would at sea level.
Within a household appliance that uses the refrigeration cycle, pressure is manipulated to alter the temperature threshold of the refrigerant.