Cosori Electric Kettle Review: 1.7L Glass Pros and Cons

The Cosori 1.7 L glass electric kettle is a plain, fast, plastic-free-water kettle for people who boil water for tea, instant noodles, oatmeal and French press and do not need temperature presets. It does the one job well, it is easy to fill and clean, and it is quiet for a 1500 W kettle. If you brew pour-over or green tea, step up to a Cosori model with presets instead. This review covers what the listing and published reviews say, who should buy it, who should skip it, and which rivals are worth a look.

Disclosure: this page contains affiliate links, and we may earn a small commission on qualifying purchases at no extra cost to you. Specs below come from the product listing and published reviews, and anything not stated is marked “not listed”.

Quick Verdict

• Buy it if: you want a simple 1.7 L boiler with a wide opening, a glass body and no plastic touching the water.
• Skip it if: you need temperature presets, a keep-warm mode, or a gooseneck spout for pour-over.
• Closest upgrade: the same-size Cosori with temperature control and a tea infuser.
• Biggest drawback in published reviews: a relatively high energy figure per boil and no heat-holding.

What This Kettle Is

The listing describes a Cosori electric kettle with a 1.7 L capacity, 1500 W heating, a borosilicate glass body, a wide opening, auto shut-off and boil-dry protection. The headline feature is “no plastic contact with water”: the underside of the lid is stainless steel, so hot water and steam do not touch plastic as they do in many glass kettles.

Cosori Electric Kettle, No Plastic Contact with Water, 1.7L, Black | Wide Opening, Easy to Clean, Auto Shut-Off, Boil-Dry Protection, Tea Kettle, Hot Water Boiler, Borosilicate Glass, 1500W

One of the home product options compared in this guide.

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The model code is not shown in the listing text we have. A detailed published review covers the Cosori 1.7 L glass kettle under the code GK172-CO, and the specs match the listing (1.7 L, 1500 W, glass body, steel lid underside). Check the model code on the page before you order if the code matters to you.

Variants: What Changes and What Does Not

The same listing family appears in black, white and green with identical headline specs: 1.7 L, 1500 W, glass body, auto shut-off. Only the colour of the base and trim differs. Do not confuse it with the other Cosori kettles, which are different products:

• Stainless steel 1.7 L: an all-steel body with the same 1500 W and no temperature control.
• 1.7 L with temperature control and infuser: 6 presets, a 60-minute keep-warm mode and a removable tea infuser.
• Gooseneck 0.8 L: a small pour-over kettle with 5 presets and 1200 W.

If you are comparing prices across these, you are comparing different tools, not different colours of one kettle.

Key Specs at a Glance

Performance: Boil Time, Noise and Energy

Boil time

One detailed review timed 1.5 L at about 6 minutes 42 seconds. Another review of the same kettle puts a typical boil at roughly 3 to 7 minutes depending on how much water is inside. A cup or two for tea is on the fast end of that range. A full 1.7 L is on the slow end. Both are normal for a 1500 W kettle in a 120 V home, because the wattage limit is set by the outlet, not by the brand.

Noise

The same lab-style review measured a peak of about 66 dB. That is audible but not harsh, and it is quieter than many all-steel kettles that rattle as they heat. The glass body does not ping or tick much as it warms. If you boil water in an open-plan flat at night, this is one of its better traits.

Energy use and heat retention

The published review recorded about 151 Wh for a boil and called that high compared with similar kettles. Glass has no insulating wall, so it also loses heat quickly: about 11 degrees F in five minutes. If you pour half a kettle and come back an hour later, the water will be lukewarm. There is no keep-warm function to cover for it.

In practice, energy cost is a few pennies per boil, so this is a minor point unless you boil many litres a day. The better habit is to fill only what you need, which also speeds the boil.

Design and Daily Use

The kettle is lightweight even when full, which helps if you have wrist strain or small hands. The opening is wide enough to put a hand or a sponge inside, which is the most practical feature for cleaning. A blue LED ring lights while it heats, and the kettle shuts off by itself when the water boils. A single switch on the handle does the job, with no menu to learn.

Two reviewer criticisms are worth noting. First, the flat power cord does not wrap neatly in the base, and it sticks out of the storage area a few inches. Second, the spout is a standard pitcher style. It pours quickly and is not designed for slow, controlled pours over coffee grounds. One review describes the spout as a fantastic pitch-style design, but that is a strength for filling mugs and pots, not for a V60.

The glass lets you see the water level and scale, which many people prefer. The downside is fragility: it is borosilicate glass, so it handles heat well, but a hard knock or a drop onto tile can break it.

Cleaning and Maintenance

Wide opening, smooth interior, no hidden crevices. Most households only need a monthly descale if the water is hard. Our step-by-step kettle descaling guide covers the vinegar routine, and the hard-water stain guide helps when the base has a thicker crust.

1. Unplug and let the kettle cool completely.
2. Fill to the line with a mix of equal parts white vinegar and water.
3. Boil once, then let it sit for 20 to 30 minutes.
4. Empty, rinse twice, then boil plain water once and discard it.
5. Wipe the outside with a damp cloth. Never submerge the base.

Do not put the kettle or base in the dishwasher. Rinsing the lid by hand is enough.

Who Should Buy It, Who Should Skip It

• Tea drinker (black or herbal): Yes. Full boil is right for these teas.
• Green or white tea drinker: No. Needs lower temperatures; no presets.
• Pour-over coffee brewer: No. Standard spout; gooseneck preferred.
• Instant noodles, oatmeal, French press: Yes. Fast, simple, large capacity.
• Household with small children: Maybe. Glass is fragile; the body gets hot outside.
• Shared office kitchen: Maybe. No keep-warm; easy to wipe.
• Anyone who dislikes plastic near hot water: Yes. Steel lid underside, glass body.

If you are still choosing between materials, read glass vs stainless steel electric kettles. If you are on the fence about presets, is a variable temperature kettle worth it gives a plain answer.

Pros and Cons

Pros

• No plastic contact with the water in the main path.
• Large 1.7 L capacity for families and mug rounds.
• Wide opening makes filling and cleaning easy.
• Quiet operation for a 1500 W kettle.
• Auto shut-off and boil-dry protection.
• Light enough to lift when full.

Cons

• Boil-only; no presets or keep-warm.
• Glass loses heat quickly and can break if dropped.
• Energy per boil is on the high side in one published test.
• Cord does not store neatly.
• Pitcher spout is not suited to pour-over.

Real-Life Uses: What Water Temperature Do You Need?

The big question with any boil-only kettle is whether your drinks actually need a boil. This table shows common uses and whether the plain Cosori glass kettle covers them.

If more than half of your daily drinks are in the green, white or pour-over rows, a preset kettle will pay for itself in better flavour. Our guide on what to look for when buying an electric kettle explains the presets in more detail.

Filling Guide: How Much Water to Boil

A 1.7 L kettle is large for one person. Boiling the right amount saves time and energy and also stops the water tasting stale from sitting.

• One mug (about 8 to 10 oz): fill to the minimum line only. This boils fastest.
• Two mugs or a small teapot: around the half mark.
• French press (about 34 oz): nearly the full kettle, which makes this the slow end of the 3 to 7 minute range.
• Pot of pasta water: boil the kettle first, pour into the pot, then bring the pot to a boil. This saves several minutes on the stove.

Always stay below the max line. Because the kettle is clear glass, you can see the level from the side without lifting the lid.

Common Problems and Quick Fixes

• White flakes in the water: Limescale from hard water. Descale with vinegar, then rinse twice.
• Kettle shuts off early: Heavy scale on the element. Descale; make sure the kettle sits flat on the base.
• Water tastes stale: Old water left in the kettle. Empty after use and refill fresh.
• Plastic or new-appliance smell: Manufacturing residue. Boil and discard one or two full kettles before first use.
• Does not start: Base not aligned or no power. Reseat on the base, test the outlet, check the cord.
• Lid drips when pouring: Overfilled kettle. Stay below the max line and tilt slowly.

If the kettle sparks, smells burnt, or has a cracked body or damaged cord, stop using it and contact the seller about the warranty. Do not try to repair the base yourself.

Closest Rivals

These are the kettles most worth comparing. Each is a separate product with its own listing.

Cosori Stainless Steel 1.7 L

Cosori Stainless Steel Electric Kettle, No Plastic Contact with Water, 1.7L | Easy to Clean, Auto Shut-Off, Boil-Dry Protection, Tea Kettle, Hot Water Boiler, 1500W

One of the home product options compared in this guide.

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The same size and 1500 W as the glass model, in a steel body. It is the safer pick for kids and busy kitchens because it will not shatter. You lose the see-through view of water level and limescale.

Cosori 1.7 L With Temperature Control and Tea Infuser

Cosori Electric Kettle with Tea Infuser & Temperature Control, 1.7L | No Plastic Contact with Water, 6 Presets, 60-Min Keep Warm, Removable Tea Infuser & Lid, Auto Shut-Off, Boil-Dry Protection

One of the home product options compared in this guide.

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This is the upgrade if you drink more than black tea. The listing shows 6 presets, a 60-minute keep-warm mode and a removable infuser and lid. It costs more than the plain glass model, but it removes the need for a thermometer or cooling-down wait for green tea.

Cosori Gooseneck 0.8 L

Cosori Gooseneck Electric Kettle with Temperature Control, 0.8L, Black | No Plastic Contact with Water, 5 Presets, 60-Min Keep Warm, Pour Over Coffee & Tea, Stainless Steel Interior, 1200W

One of the home product options compared in this guide.

Check Price on Amazon →

A different tool. The 0.8 L gooseneck has 5 presets, a 60-minute hold and a stainless interior. A published review of the same line found temperatures ran about 5 degrees F under the label and noted a 2-year warranty. Another review found the pour less balanced than premium gooseneck kettles. It suits a single pour-over cup better than a family jug.

Chefman 1.8 L Glass Kettle

Chefman Electric Kettle, 1.8L 1500W, Hot Water Boiler, Removable Lid for Easy Cleaning, Auto Shut Off, Boil-Dry Protection, Stainless Steel Filter, BPA Free, Borosilicate Glass Electric Tea Kettle

One of the home product options compared in this guide.

Check Price on Amazon →

The listing shows a 1.8 L borosilicate glass kettle at 1500 W with a removable lid and a stainless filter. It is the most direct glass-for-glass alternative. We cannot confirm whether the lid underside is steel from the listing, so check the product details if “no plastic contact” is your priority.

MEGAWISE 1.8 L Glass Kettle

MEGAWISE 1.8L Electric Glass Kettle with Auto Shut-Off and Blue LED

One of the home product options compared in this guide.

Check Price on Amazon →

A glass kettle with auto shut-off and a blue LED. The listing title does not give wattage or lid details, so treat it as a budget option with fewer confirmed features.

Breville Soft Top Pure

Breville BKE700BSS Soft Top Pure Hot Water Kettle, Brushed Stainless Steel | Quickly heat water for tea, coffee and instant meals with electric kettle featuring a soft-opening lid | 7 cup capacity

One of the home product options compared in this guide.

Check Price on Amazon →

A premium stainless kettle with a soft-opening lid and a 7-cup capacity. Pick it if build quality matters more than price, and you do not need presets. It is not a glass kettle, so there is no see-through view.

Cost of Ownership

For a broader checklist on what to look for before buying any kettle, see what to look for when buying an electric kettle. If you want a premium rival from another brand, see best De’Longhi electric kettles.

Safety Notes

• Never run the kettle dry, even though boil-dry protection is built in.
• Do not fill past the max line. Boiling water can splash out of the spout.
• The glass and the lid get hot. Use the handle and keep the kettle away from the counter edge.
• Do not pour cold water into a hot glass kettle to cool it quickly.
• Stop using it if the glass has a crack or the cord is damaged.
• Use a dedicated outlet. A 1500 W kettle on a shared strip can trip a breaker.

FAQ

Is the Cosori glass kettle really free of plastic contact?

The listing says no plastic contact with water. The lid underside is stainless steel and the body is glass. The handle and base are plastic but sit outside the water path.

How long does it take to boil?

Expect roughly 3 to 7 minutes depending on the water volume. A published review timed 1.5 L at about 6 minutes 42 seconds.

Does it have temperature control?

No. This model boils only. For presets, choose the Cosori with temperature control or the gooseneck.

Can I keep the water hot?

No. There is no keep-warm function, and glass loses about 11 degrees F in five minutes in one review.

Is it noisy?

A published review recorded a peak near 66 dB, which is comparable to normal conversation. Many users find it quiet for its class.

How do I descale it?

Boil a half vinegar, half water mix, let it sit 20 to 30 minutes, rinse well and boil plain water once. Repeat monthly in hard-water areas.

What is the warranty?

A published review lists 2 years. Verify the term on the listing or the included card, because it can vary by seller.

Is glass or steel better?

Glass shows scale and has no metallic taste. Steel holds heat longer and survives drops. See our glass vs steel comparison linked above.

Which One Should You Buy?

Choose the Cosori 1.7 L glass kettle if you want a simple boil-only kettle with a wide opening and a plastic-free water path. Choose the Cosori with temperature control if you drink green tea, brew coffee at set temperatures or want a keep-warm mode. Choose the gooseneck if pour-over is the priority and you only need one or two cups. Choose steel if breakage is your main worry.

Last updated: October 2026