Establish whether the glass is induction or radiant ceramic before choosing a product, because Whirlpool sells both. Parts cross-reference under Ariston, Indesit, Hotpoint and IKEA, which is worth knowing before concluding a component is unavailable.
Whirlpool hobs reach Australian kitchens under their own badge and, in engineering terms, under several others.
Parts under four other names
Whirlpool owns Ariston, Indesit and Hotpoint and builds IKEA's appliances, so hob components frequently appear under more than one label. A burner cap, a trivet or a control knob that seems unobtainable under Whirlpool has a genuine chance of being stocked under a sibling brand.
Measure the part and cross-reference rather than searching one name, particularly on an appliance more than a few years old. See how to clean an Ariston cooktop and how to clean an IKEA cooktop.
Both kinds of glass
Whirlpool sells induction and radiant ceramic, and the two look identical and behave in opposite ways. Establishing which you have decides your timing more than your product, and our cooktop cleaning guide covers how to tell them apart.
The distinction matters here more than on brands that sell only one, because a household that replaced a Whirlpool with another Whirlpool may well have swapped one type for the other without realising it, and then found their usual cleaning habit no longer works.
Gas models
Where a Whirlpool is gas, the standard approach applies: photograph the layout, lift trivets, caps and crowns, soak the enamelled parts flat, clear ports with something wooden, dry cast iron by hand.
The knobs, on the models that have them
Where a Whirlpool hob is gas or older ceramic, the control knobs pull straight off, and behind each is a spindle passing through the fascia with a ring of grease around it.
It is invisible with the knobs on, which is why it survives every clean the appliance has had, including every clean by every previous occupant of the flat. On a developer-fitted kitchen that has passed through several owners, that ring may represent the entire history of the appliance.
Wash the knobs in warm soapy water, dry them, clean the fascia with a cloth rather than a spray so nothing runs down the spindle, and push them back on square. Five minutes, and it is the difference between a hob that looks clean and one that is.
What actually goes wrong
A ceramic hob treated as induction, so spills are left to cool and then will not shift.
A parts search under one badge when the component is listed under another.
A burner cap on the wrong crown, so one burner will not simmer.
Should you do it yourself?
Do it yourself, once you know which surface you have.
Get someone in if a ceramic top has months of baked film, or alongside the Whirlpool oven below.