The heater on my Renault Laguna only blows warm when on 'hot' although the engine runs at normal temperature. Also my air con only blows cool. The fan blows as expected so I don't think I have a loose hose Are the two related or separate problems ? . I am thinking that I may need the air con 're-filling' as it is now 7 yrs old, so how much would I expect to pay.
Is the heater problem a DIY job or not.
TIA