The answer to 'why is my heat pump not working' is that there could be several common causes, including a tripped circuit breaker, a frozen outdoor unit, a malfunctioning thermostat, or a problem with the refrigerant. Heat pumps are complex systems that rely on multiple components working together, so a failure in any one part can prevent the entire system from functioning properly.
Some common symptoms of a malfunctioning heat pump include the unit not turning on at all, the air blowing but not heating or cooling, or strange noises or smells coming from the equipment. If you're experiencing any of these issues, it's important to troubleshoot the problem quickly to avoid further damage or discomfort in your home.