Hi fellow members. This is my first car with air conditioning. One thing, how do you know when the air conditioning needs servicing/re gassing. When I first turn it on it gives out like a damp musty smell. Is thisn a sign. Any advice would be much appreciated. Thank you

Welcome to the forum Dan :) 

You'll find the members on here are a friendly and helpful bunch :)

it should say in your service history when your Ac was last serviced. It should be every two years. From the sounds of it yours is probably due for a service. 

Cheers

steve :)

Hi Dan...welcome to the Forum

Usually, the musty smell is the bacteria in the heating & ventilation system and it needs eradicating by using an 'air cond bomb' which is like a smoke grenade which you put the air con on full (recirculation), windows up and let it rip. The smoke/gas works it way through the pipes and tubes killing all bacteria and hey presto, smells nice again

Cheers,  Trevor