Is the Cosori Electric Kettle (1.7L Glass) Worth Buying in 2026?
Short answer: Yes, for most people who just want fast, plastic-free boiling water. Skip it if you brew green tea or pour-over and need set temperatures.
Cosori 1.7L Glass Kettle
✓ Worth buyingAmazon rating 4.5★ from 49,950 ratings · checked October 27, 2026
Check current price on Amazon →Buy it if…
- You want boiling water fast for tea bags, French press, oatmeal or instant noodles
- You care that the water only touches glass and steel, not plastic
- You like being able to see the water level and the boil
Skip it if…
- You need specific temperatures for green, white or oolong tea
- You do pour-over coffee and want a gooseneck spout
- You only ever boil one mug, where a 1L kettle wastes less counter space
There is a reason this kettle sits at #1 in Amazon’s Coffee, Tea & Espresso Appliances best-seller list. It does the one job most people buy a kettle for, boiling water quickly, and it does it without letting the water touch plastic.
That second part matters more than it sounds. Plenty of cheap kettles have a plastic body or a plastic window strip, and some people taste it. Cosori builds this one as a borosilicate glass jug with a stainless steel lid, spout and heating plate, so you get a clean-tasting boil and, as a small bonus, you can watch the bubbles build and spot limescale before it becomes a crust.
What it does well
Speed. At 1500 W it’s as powerful as a plug-in kettle gets in the US. Cosori says it heats 0.5 L, about two cups, in under three minutes. Owners mostly agree: of roughly 2,670 reviews that talk about heating speed, 94% are positive.
Cleaning. The mouth is wide and the lid swings far open. That sounds trivial until you live somewhere with hard water and find yourself descaling every few weeks, fishing around a narrow opening with a bottle brush; here you can simply get a sponge to the bottom.
Safety basics. It switches off within 30 seconds of reaching a boil and won’t heat when empty. Standard stuff, but not universal at the cheap end.
The catch: reliability
The weak score in our breakdown is build and reliability, a 6.5. Two things drag it down.
First, the auto shut-off. It’s the feature owners argue about most. Out of about 790 reviews that mention it, around 450 are happy and 340 are not. That’s a 43% complaint rate on the one feature that should never fail.
Second, longevity. Amazon’s own review summary flags durability as a concern, with some owners saying their unit stopped working within about four months. A 4.5★ average from nearly 50,000 ratings tells you that most units are fine, but it can’t promise that yours will be, so keep the box until the return window closes. Cheap insurance.
Who should get something else
If you drink green or white tea, a boil-only kettle is the wrong tool. Boiling water scalds delicate leaves. The Cosori Gooseneck 0.8L has five temperature presets and holds a temperature for up to an hour within about ±5°F. It’s also the better pick for pour-over coffee because of its narrow spout.
If you only boil one mug at a time, the Amazon Basics 1L Glass Kettle is smaller. It uses the same 1500 W power and a Strix thermostat, the control part used in many premium kettles. Of about 1,730 reviews that mention its speed, 96% are positive.
Bottom line
The Cosori 1.7L is worth buying if you want fast, plastic-free boiling water and you don’t need temperature control. Just test the auto shut-off in the first week, and don’t hesitate to swap a unit that misbehaves.
What we like
- No plastic touches the water: glass body, steel lid and base
- Fast. Cosori claims 2 cups in under 3 minutes, and 94% of owners who mention speed agree
- Wide mouth makes descaling and wiping easy
- Shuts itself off within 30 seconds of boiling, with boil-dry protection
What we don’t
- No temperature presets or keep-warm
- Auto shut-off is the most-criticised feature: 43% of mentions are negative
- A steady stream of owners report units dying within months
What owners say about the Cosori 1.7L Glass Kettle
Topics mentioned most in Amazon reviews, split into positive and negative mentions. Snapshot taken October 27, 2026.
Owners love how fast it boils and how it looks. The recurring complaints are an auto shut-off that sometimes fails and units that die within months.
Key specs
| Spec | Cosori 1.7L Glass Kettle |
|---|---|
| Amazon rating | 4.5★ (49,950) |
| Capacity | 1.7 L |
| Power | 1500 W |
| Body | Borosilicate glass + stainless steel |
| Water touches plastic | No |
| Temperature presets | None (boil only) |
| Speed claim | 0.5 L in under 3 min |
| Auto shut-off | Yes, within 30 s of boiling |
| Boil-dry protection | Yes |
| Price | Check price |
Alternatives worth a look
Cosori Gooseneck 0.8L
Amazon Basics 1L Glass Kettle
FAQ
Does the Cosori kettle have any plastic inside?
According to Cosori's listing, no plastic contacts the water. The body is borosilicate glass and the parts the water touches are stainless steel.
Can I set a temperature on this kettle?
No. This model only boils. For tea or pour-over at specific temperatures, look at the Cosori Gooseneck (5 presets, 1-hour hold) instead.
How big is it?
It holds 1.7 liters, about 7 standard mugs, and draws 1500 W, the usual maximum for a US kitchen outlet kettle.
Is the auto shut-off reliable?
Most owners say yes. But of roughly 790 reviews that talk about the shut-off, about 340 are complaints. If it fails to click off, use the warranty rather than living with it.
Ready to buy?
- Cosori 1.7L Glass Kettle4.5★ · 49,950 ratingsCheck price on Amazon
Prices and stock change often, so the button shows today’s price on Amazon.com.
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How we put this together
We compared manufacturer specs and Amazon listing details, read the patterns in Amazon owner reviews (we refresh this snapshot regularly), and scored each product with our published rubric. We have not tested these units hands-on. When we do, the page will say so. Prices change constantly, so we link to the live price instead of quoting one.
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