Never assume that a new electric kettle will deliver fresh-out-of-the-box performance from its first boil.
Electric kettles should be cleaned and descaled with an acidic wash and repeated rinse/boil cycles before use to remove lingering odors, according to multiple cleaning guides.
Cleaning a new kettle
The goal of first-use kettle cleaning is to wash away 3 categories of residue:
1. 2.
- Dust, dirt and other external contaminants picked up during assembly and packing.
Some of the excesses disappear as the kettle operates out of the box, but
The cleaning sequence
The most reliable way to rid the kettle of the plastic taste that new kettles get is a simple rinse/boil cycle with a forced sit-in between.
A published guide on new kettle odor MizaanHome recommends a basic 3-stage cycle to get rid of the smell left by the factory:
- Fill the kettle with water, bring it to a boil, and discard the boiled water.
- Repeat that process for a second and third cycle
- On the fourth fill, add the acidic solution, bring it to a boil, then discard
When cleaning a new kettle, an acidic solution of equal parts vinegar and water is the usual choice.
Some prefer the opposite – boiling the acidic water three times, then using plain water for a bunch of cycles.
After that, giving the vinegar or lemon juice an hour in the kettle before discard. Lemon juice is sometimes described as antibacterial, though this is not verified in the sources.
The same guide to removing plastic taste uses baking soda as a secondary pass.
Lemon juice is not necessarily equivalent to citric acid, a claim that requires verification.
REDAPRO says citric acid works with steel, glass and plastic kettles. Not quite as simple as 4 plain boils.
Who is at risk
Limescale is a conductor with a lower thermal profile than water, so scale on the element or the heating tube will insulate the element. Formed calcium carbonate lowers the effectiveness, increases heating time, and even breaks down the element. Noola.
Harsher scaling conditions increase the risk, but kettle cleaning is needed everywhere.
The REDAPRO guide mentions that citric acid cleans tea oils from the kettle –
What still needs verification
The sources detail cleaning sequences and add some reasons, but provide little in the way of outlining the causes of new kettle plastic taste:
The sources also do not suggest what constitutes persistent failure in an electric kettle:
No source laid out how often to perform kettle cleaning or address ingress of impurities:
What if the taste persists?