If your heat pump runs all the time it may or may not be normal depending on a couple of factors. For example if the heat pump is meeting your temperature setting and the external temperature is less than 30 degrees then your heat pump system is likely functioning properly.
An HVAC Inspection provides you with a system analysis which will let you know how well your system is operating. Often you can discover an issue and get it fixed before it fails. It is an advantage allowing you to make plans to repair or replace equipment before a complete failure.