I'm paranoid, so check a lot of the Hab Check items on almost every trip ['What's fell off since last trip?']. I've had a couple of electrical upgrades carried out by David of Wildebus fame, so that has given me peace of mind, since the work was deeper than a visual check/meter readings exercise. The refillable gas was installed in July 2021, and I had the fridge flu emptied and cleaned in September 2022. I sterilised the Fresh Water Tank shortly afterwards and bought a new Stopper and Seal for the Tank [still to be fitted] in October. Descaled the Water Heater and Shower + Taps in October, in anticipation of a trip to Spain that Jury Service, hospital appointments/operations and Flat flooding have buggered up to date, so the 'Annual Hab Check' has become a Monthly Instalment Plan operation, but it eases the cashflow and leaves time for the work until the weather improves!
Steve