The core difference isn’t the extinguisher hardware so much as the inspection and documentation requirements, which apply to commercial properties in a way they generally don’t for a private residence.
A homeowner isn’t required to have an annual licensed inspection of a kitchen extinguisher the way a commercial kitchen is. The unit itself might be functionally similar, but the compliance obligation around it is different.
Commercial spaces involve more people, more variable hazards, and fire marshal oversight that a private home simply isn’t subject to in the same way.
That’s the underlying reason behind the annual inspection, tagging, and documentation requirements: verifying compliance for spaces where more people are potentially at risk and where enforcement authority actually applies.
If a space is used for any commercial purpose, even a home-based business with client visits, it’s worth confirming whether commercial requirements apply rather than assuming residential rules cover it.
This comes up more than people expect with home-based businesses, small studios, or converted spaces that blur the line between residential and commercial use.
Residential and commercial service, sized and scheduled for your specific situation.