Occasional breakdown of an HVAC unit is quite normal but when the frequency of these breakdowns increase and you need to call in HVAC technician quite often, at least a number of times in a year then you must know for sure that it is time for you to replace your old heat pump and opt for a new heat pump. This is because it might so happen that the repair cost of the heat pumps might become as high as the cost of a new heat pump. Thus, it is better to opt for a new heat pump.
Another obvious sign that your heat pump needs replacement is when you have high energy bills consistently. However, you must find out whether the cause of high electricity bills is your heat pump or any other device. In case, there is no other device that contributes to your high energy bills it is better that you think of replacing your heat pump.
Inconsistent heating and cooling could be another factor that may call for heat pump replacement. If you observe that some rooms in your home are consistently too cold or too hot, then it is certain that something is wrong with the replacement. The same rule is applicable for relative humidity which means if you find certain rooms too dry or too moist the reason could be your malfunctioning heat pump. However, that does not mean you will have to replace your heat pump immediately rather, even after checks and parts replacement if the same problem persists then it is a better idea to opt for heat pump replacement.