Yes and no. HVAC systems tend to leak over time due to the normal wear and tear on a system. Leaks can also occur for other reasons. But, you should not have to regularly add refrigerant to a system. If your system is low on refrigerant, a technician can check the system for leaks and their source. It may be repairable, or it may signal the need to replace a component of your system, which we can help you determine.