An unserviced system quietly spreads dust and mould every time it runs — and the air inside your home can be more polluted than the air outside. Most families never know, because nobody's ever measured it.
And when a system does get 'looked at', it's usually the reactive scramble — it's stopped cooling, dripping, or smells — and by then you're often paying to replace what a bit of care would have saved.
For homeowners who'd rather look after their system than replace it — and want to know the air their family breathes is actually clean.