Anything else to do whilst changing Heater Matrix?

[Snels]

At the end of the month I am going to replace the Heater Matrix in my 08 multi-space ,is there anything anyone would recommend checking/replacing whilst the dash is off? 


Thanks

[Civvic]

At the end of the month I am going to replace the Heater Matrix in my 08 multi-space ,is there anything anyone would recommend checking/replacing whilst the dash is off? 


Thanks

Just a couple of O-ring seals for the inlet and outlet.

[Zion]

Cabin filter if fitted?