Pump up the heat, man
This is an oversimplified explanation of how heat pumps work. First, what is a heat pump? A heat pump literally pumps heat from one place to another. You may open your fridge and witness that it’s colder inside than out, but in terms of physics, it’s actually lacking heat. The way that happens, is that the heat inside is pumped outside. When your older fridge hums or makes a motor noise, that’s the motor in the compressor making your room…