We used the COSORI 1.7-litre glass kettle for a week and would recommend it. It heated water reliably in our use, was quiet enough that noise barely registered as an issue, poured as expected and switched itself off when the water boiled. Plastic-free water contact is a key reason to consider it: COSORI says no plastic touches the water, although the whole appliance is not plastic-free. In one timed test, a one-litre fill reached the boil in 2 minutes 40 seconds. That’s our observed result, not a guaranteed time for every kitchen or fill.
How we tested it
Our assessment comes from a week of household use and photographs of the kettle before, during and after boiling. We timed one one-litre boil. We did not record the starting water temperature, measure noise with a meter, run a controlled comparison against other kettles or test long-term durability.
Boiling performance
The kettle brought one litre of water to the boil in 2 minutes 40 seconds in our timed test. Across the week, we found it worked well in normal use. We haven’t measured electrical consumption, so we can’t claim that it uses less energy than another kettle. Boil time can change with starting water temperature, fill volume and supply conditions; the 2:40 figure is a useful reference for our test, not a promise printed on the box.
The transparent body lets you see the water heating. A blue light is visible while it is on, and the photos show a vigorous rolling boil. The level markings run from a 0.5-litre minimum to a 1.7-litre maximum, with intermediate marks. That makes it easier to judge how much water to add than guessing through an opaque kettle.
If your main priority is dispensing hot water for single drinks without lifting a kettle, our kettle versus hot-water dispenser guide explains that different purchase. This review is about the kettle we actually used.
Plastic-free water contact
COSORI describes this glass model as having no plastic in contact with the water. That is a meaningful distinction from a kettle with plastic in its water path, and it is a recurring reason buyers mention for choosing this design. It does not mean every part of the kettle is plastic-free: the handle and exterior fittings are different from the water-contact surfaces. We have not independently audited every internal component, and we would not claim a health or taste advantage from the material alone.
Noise, pouring and shut-off
Noise was minimal in our week of use. We did not measure decibels, so this is a household impression rather than a claim that it is quieter than a named competitor. The kettle poured as expected, without a problem worth flagging in normal use. It also switched itself off when the water boiled, as expected. We did not test the shut-off mechanism under abnormal conditions.
What other owners report: Customer-review excerpts grouped with this product repeatedly mention the appeal of keeping plastic out of the water path, and several praise the appearance and pouring. Feedback on noise and the lid is less consistent: some owners report a louder boil or a stiff lid, while others have no issue. Reviews on a product page can include other variants, so we would not treat those comments as a measured finding for this exact glass kettle. In our own week with it, noise was minimal and the lid worked as expected.
The hinged lid opens to expose the inside for filling. Its clear glass body and blue heating light make its operating state easy to see. The glass also shows condensation immediately after boiling, visible in our photographs; anyone who wants an opaque exterior may prefer a different finish. We have not used it long enough to judge how the glass looks after months of limescale and cleaning. For general care rather than a claim about this kettle’s durability, see our kitchen appliance cleaning guide.
What we liked — and what we cannot yet judge
- What worked well: reliable boiling, minimal perceived noise, normal pouring and automatic shut-off over our week of use.
- Useful design details: clear water-level marks, 1.7-litre maximum fill and a visible blue heating light. COSORI says no plastic contacts the water; the kettle itself is not entirely plastic-free.
- Trade-off: condensation is visible on the glass and lid just after boiling.
- Not yet tested: long-term reliability, limescale build-up, controlled energy use and performance against rival kettles.
Verdict
We would highly recommend this COSORI to someone who wants a generous-capacity glass kettle that handles the basics well, especially if avoiding plastic in contact with the water matters to you. The one-litre boil took 2 minutes 40 seconds in our test; during the rest of our week with it, noise was minimal, pouring was as expected and the shut-off worked normally. The recommendation is grounded in that use, with the caveat that one week cannot tell us how it will wear over years.
Frequently asked questions
How long did one litre take to boil?
One litre took 2 minutes 40 seconds in our timed test. We have not claimed this is an average or a guaranteed result.
Was the COSORI kettle noisy?
Noise was minimal in our week of use. We did not measure it with a sound meter or compare it under controlled conditions.
Did it pour and switch off properly?
Yes. In our household use, pouring and automatic shut-off worked as expected.
How much water does it hold?
The marks on our kettle show a 0.5-litre minimum and 1.7-litre maximum.
What is the main drawback?
Condensation is visible on the glass and inside the lid after boiling. We cannot yet judge long-term limescale build-up or durability from one week of use.