There’s no one reason to go about doing this. If you own an air source heat pump, there are many reasons to service them. Since air source heat pumps can be found at homes and commercial properties, their servicing requirements vary depending on their usage. When you are using an air source heat pump at home, it only requires annual maintenance. Heavy usage may also lead to maintaining the system twice a year. However, if they are used heavily or regularly for commercial purposes, the servicing must be done between three to six months.