Ideally yes, as then the service centre can ensure the inflatable bladder / lifejacket can be refilled correctly after service.
For SOLAS life jackets they must serviced at an independent approved service centre approved by both the manufacturer and the National Administration. E.g. In the UK this would be the MCA (Maritime & Coastguard Agency). They must be serviced at intervals of 12 months maximum.
For CE life jackets there is no legal requirement for servicing but it is strongly recommended that they are also serviced by an independent approved service centre or an annual basis.
All the approved MULLION Service stations are listed on our website. You can also find this on the MCA website: www.mcga.gov.uk
The same rules apply here as for lifejackets above.
These are essential life-saving products for the protection of your life and should be treated with the appropriate care & respect. Having your lifejacket / floatation garment serviced on a regular basis may cost you money but it is a small price to pay against the value of your life.