Google adds developer guides for Google Assistant to support smart bathtubs and faucets, such as those by Kohler and Delta
Kyle Bradshaw / 9to5Google :
Context & Ripple Effects
This is the latest step in a category-by-category expansion Google has run since 2017, when it first brought Assistant compatibility to General Electric smart appliances and added Home support for Belkin's WeMo and Honeywell devices. By mid-2018 the platform claimed native control of [[a:929394|blinds, kettles, ovens, refrigerators, air purifiers, fans, air conditioners, coffee makers, and sprinklers]], and vendors gained the ability to define custom Assistant commands for their own devices.
What changes with this story is the target: instead of adding another appliance category itself, Google is publishing developer guides so fixture makers like Kohler and Delta can build bathtub and faucet support directly — pushing integration work downstream to manufacturers and extending Assistant into plumbing, a part of the home no prior coverage had touched.
First-order effects
- Kohler and Delta gain a documented path to ship voice-controlled bathtubs and faucets without negotiating bespoke integrations with Google, lowering their engineering cost per connected product.
- Smart-home developers get official templates for water-fixture device types, meaning new categories reach the Assistant catalog at the vendor's pace rather than Google's release cadence.
Second-order effects
- Amazon's rival smart-home platform faces pressure to match category-for-category coverage, since a fixture maker choosing between ecosystems will favor whichever certifies more device types faster.
- For Kohler and Delta, voice compatibility becomes table stakes rather than differentiation, shifting competition toward which ecosystem their fixtures integrate with most deeply.
Third-order effects
- If the guide-driven model holds, the boundary of the 'smart home' keeps expanding from electronics into building infrastructure — plumbing, and by extension whatever category gets guides next — until voice support is an expected feature across all residential fixtures.
- Platform power consolidates around whoever maintains the certification catalogs: Google's role shifts from building integrations to gatekeeping which device classes exist, a structural position competitors must replicate to stay relevant.
The trend: Smart-home platforms are competing on the breadth of certified device categories, with Google outsourcing category expansion to manufacturers through developer guides as the catalog stretches from appliances into plumbing.