Smeg KLF03 Kettle Review: Do You Get More Than the Look?
The Smeg 50’s Style kettle costs four or five times as much as a supermarket kettle and boils water at the same 3 kW. So the real questions are whether it lasts, whether it is a pain to live with, and how much it really costs. One editorial test, two big retailer rating blocks and a sceptical Mumsnet crowd answer most of that.
Where the reviews line up
Our evidence comes from three places. Trusted Reviews timed it. Buyers have rated it thousands of times at AO and John Lewis. And owners argue about it on Mumsnet. All three agree on the looks and the pour. They disagree on how long it lasts.
It is not slow. Trusted Reviews boiled a full 1.7 litres from cold in 3 minutes 44 seconds and one litre in 2 minutes 18 seconds. That is quicker than Smeg’s own claim of “around 4–5 minutes” for a full kettle. Testers and buyers also like the soft-opening lid, the drip-free spout and the washable steel limescale filter.
It is heavy. Trusted Reviews calls it heavy, especially when full, and puts a full kettle at about 2.9 kg. A Mumsnet owner says she always thinks it is full when it isn’t.
Reliability is the open question. AO buyers give it 4.7 out of 5 from 3,051 ratings. At John Lewis it gets 4.1 from 752, which is a noticeably cooler score. On Mumsnet, several owners say theirs failed within months or just after the guarantee ran out. The guarantee is two years. If you buy one, keep the receipt.
The three reviews this summary is built from
- Trusted ReviewsEditorial test with timed boils from cold. The only measured UK figures we found.
- MumsnetTwo owner threads, 66 and 50 replies. The most critical source, especially on how long it lasts.
- AO & John Lewis4.7/5 from 3,051 and 4.1/5 from 752, checked 8 October 2026. They sell it, so read them as buyer ratings, not tests.
Before the review: which Smeg kettle is this?
The KLF03 is Smeg’s standard 1.7-litre 50’s Style kettle. It boils only. There is no temperature dial. The KLF04 looks almost the same but lets you choose the temperature, and some reviews mix the two up. Homes & Gardens’ widely shared review lists temperature presets, so it covers the KLF04, not this kettle. The model is current: Smeg’s own shop sells it in 16 colours. Note that Smeg’s separate UK catalogue pages showed “out of stock” for every colour we checked on 8 October 2026, while AO showed it available.
Specification at a glance
| Spec | Figure | Confidence |
|---|---|---|
| Capacity | 1.7 litres (7 cups) | Smeg, AO, John Lewis agree |
| Minimum fill | 500 ml | Trusted Reviews. Smeg’s manual marks a minimum but gives no figure |
| Element | 3,000 W, concealed | Smeg, AO, John Lewis. PriceSpy lists 2,400 W, which is the continental rating |
| Boil time, full 1.7 l | 3 min 44 s measured · “around 4–5 minutes” claimed | Trusted Reviews timed it · Smeg’s shop FAQ |
| Boil time, 1 litre | 2 min 18 s | Trusted Reviews |
| Boil time, 1–2 cups | “Typically under 1 minute” | Smeg’s claim. Nobody independent has timed it |
| Weight, empty | 1.6 kg (Smeg) · 1.5 kg (John Lewis) · 1.65 kg (PriceSpy) · “over 1.2 kg” without the base (Trusted Reviews) | Sources disagree. Probably measured with and without the base |
| Weight, full | About 2.9 kg | Trusted Reviews |
| Dimensions | 248 × 226 × 171 mm (H × W × D) | Smeg and AO. John Lewis swaps width and depth |
| Cord | 1 m (Smeg) · 99 cm (John Lewis), wraps under the 360° base | Agree |
| Limescale filter | Removable, washable stainless-steel mesh behind the spout | Smeg manual, Trusted Reviews |
| Safety | Boil-dry cut-out, auto switch-off, anti-slip feet | Smeg manual, AO |
| Energy per boil (ours) | Full kettle about 0.187 kWh = 4.9p · 1 litre about 0.115 kWh = 3.0p | Our arithmetic: 3 kW × Trusted Reviews’ times × 26.32p/kWh (Ofgem cap, October 2026) |
| Noise | Not published for the KLF03 | See the caveat box |
| Guarantee | 2 years | Smeg shop FAQ, AO, John Lewis |
| Price | RRP £159.95 (gloss) / £189.95 (matte) · Smeg shop £129.95 / £159.95 · John Lewis £129.95 · AO from £129 | Checked 8 October 2026. See the price note below |
Trusted Reviews
Who they are: Trusted Reviews is a UK tech and home review site whose editors use each product and pair that with industry-standard tests in equipped facilities; it says manufacturers don’t vet its reviews and it never takes money to test, so it is a strong hands-on source.
This is the source that tells you whether the kettle is quick, because the reviewer timed it from cold. One litre took 2 minutes 18 seconds and the full 1.7 litres took 3 minutes 44 seconds. That is a little faster than Smeg’s own claim of four to five minutes for a full kettle. The minimum fill is 500 ml, which is more than many kettles and worth knowing if you usually make one cup. Trusted Reviews does not report a one-cup time.
The reviewer likes the matte finish, which does not show fingerprints, and the soft-opening lid, which lets steam out gently instead of in one burst. The spout does not drip and the steel limescale filter lifts out to wash. There are two cons, and they are the ones you would expect: it is expensive, and it is heavy. It weighs over 1.2 kg empty without the base and about 2.9 kg full. If you want to choose the temperature, the reviewer points you to the KLF04.
T3 also rates the KLF03 highly and gave it a Platinum Award in February 2025. It praises the lid, which has not stuck in hard water. But T3 quotes a boil time of “30 to 50 seconds” without saying it timed anything. That can only mean a cup or two, so we have not used it.
Watch: SMEG 50's Retro Electric Kettle Review: Is It Worth the Price & Perfect for Your Kitchen?
A review asking the same value question Trusted Reviews raises. The listing does not say which market’s model it shows, and we have not checked any times it gives.
Watch on YouTube ↗ Independent YouTube video — not made by or for Shopbam.Mumsnet
Who they are: Mumsnet Talk is the site’s open discussion forum, where parents post their own experience of products; posts are unverified owner opinion, so the value lies in patterns repeated across many threads rather than in any single post.
These threads are the counterweight to the star ratings. People who post in a thread called “style over substance” are mostly unhappy owners, so do not read them as a fair sample. On the first page of the 2021 thread, eight of the ten posts about the kettle are negative. The complaint that keeps coming back is how long it lasts. One owner says the base “went on it 2 days past the warranty”. Another says the kettle “lasted 18 months”. A third says the thermostat went after about two months. Others mention the lid getting hot on their knuckles when pouring the last of the water, a worn hinge, and a badge that fell off.
The 2024 thread is more balanced. One owner calls it “quite noisy”. Another thinks the base looks “cheap and flimsy”. One says their kettle and toaster have faded. On the other side, one poster says their Smeg kettles “have lasted reasonably well” and bought another. Another bought a refurbished one and is impressed. Two caveats. Neither thread is limited to the KLF03, and one critic is clearly describing the temperature-control KLF04. And none of these posts are verified purchases.
Watch: Product Review: Smeg KLF03BLAU 50s Retro Style Aesthetic Electric Kettle
An owner-style review of the Australian KLF03BLAU. It is the same design, but sold for a different market, so the power rating may not match the UK 3 kW model.
Watch on YouTube ↗ Independent YouTube video — not made by or for Shopbam.AO and John Lewis
Who they are: AO gathers customer feedback through automated Trustpilot invitations and its policy page could not be read; John Lewis’ ratings are moderated by PowerReviews and include labelled free-product reviews and a £100 prize-draw entry — both are buyer satisfaction scores, not tests.
Both shops sell the kettle, so treat these as buyer ratings, not tests. The two scores are interesting side by side. AO’s 4.7 from more than three thousand ratings is about as high as kettles get. John Lewis’s 4.1 from 752 is good, but it is clearly cooler. The text of the individual reviews did not load on either page, so we cannot tell you what is behind the gap. It fits with Mumsnet, though: plenty of very happy owners, and a minority whose kettle failed. PriceSpy’s own rating is 1.9 out of 5, but that is from only seven reviews, which is too few to mean much.
The retailer listings are useful for the details. AO lists a concealed element, boil-dry protection, a water gauge, a 360° base, a soft-open lid, a non-drip spout, anti-slip feet and a two-year manufacturer guarantee for domestic use. John Lewis adds the 99 cm cord and a 1.5 kg weight. Smeg’s own shop says 1.6 kg.
Prices, checked 8 October 2026. Smeg’s own shop sells the gloss colours (cream, red, pastels, black and others) at £129.95 and the matte and steel colours at £159.95. Both are shown as £30 off, which puts the full prices at £159.95 and £189.95. John Lewis has it at £129.95, down from £159.95. PriceSpy lists AO’s grey at £129, down from £159, and finds the lowest price at £119 from Harvey Norman. It is discounted so often that we would not pay full price.
Watch: Smeg Retro Style Kettle KLF03BLUK
A short clip of the UK gloss-black KLF03BLUK. It is the closest UK match to the kettle these buyers are rating.
Watch on YouTube ↗ Independent YouTube video — not made by or for Shopbam.What it costs to run
Kettles do not have energy labels, so we worked the running cost out ourselves. We multiplied 3 kW by Trusted Reviews’ boil times and charged it at the October 2026 Ofgem cap of 26.32p per kWh. On that basis, a full 1.7 litres costs about 4.9p and one litre about 3.0p. If you boil a litre four times a day, that comes to roughly £44 a year. These are our sums, not Smeg’s. They assume the element draws its full rated power the whole time it is on. Any 3 kW kettle costs much the same to boil the same amount of water. The way to save money is to boil less. The 500 ml minimum fill makes that harder than on kettles with a one-cup line.
Strengths and weak points
What holds up
- Quicker than Smeg claims: a full kettle in 3 min 44 s, as timed by Trusted Reviews.
- The soft-opening lid lets steam out gently, and T3 found it does not stick in hard water.
- The spout does not drip, and the washable steel limescale filter lifts out.
- A 360° base with the cord wrapping underneath, plus anti-slip feet and boil-dry protection.
- 4.7/5 from 3,051 AO ratings, one of the largest buyer samples for any kettle.
- Comes in 16 colours, so it can match a Smeg toaster or a kitchen scheme.
What people complain about
- Price: £129.95 or more for a boil-only kettle with no temperature control.
- Heavy: about 2.9 kg full, by Trusted Reviews’ figure.
- A 500 ml minimum fill is more water than one mug needs.
- Mumsnet owners report failures within months or just after the guarantee ends.
- The guarantee is two years, which is average and not generous at this price.
- One owner says it is noisy and another finds the lid hot on the knuckles when pouring.
Who it actually suits
Buy it if the look matters to you, you want it to match a Smeg toaster, and you can get it at the usual discounted £120–£130 rather than full price. It boils as fast as any 3 kW kettle, and you can register it, keep the receipt and hold Smeg to the two-year guarantee if it fails. It looks the part next to a Sage Bambino Plus or a De’Longhi Dedica, or in a kitchen already built around a KitchenAid Artisan mixer.
Look elsewhere if you mostly boil one mug, if you need to choose the temperature for green tea or formula (that is the KLF04), or if your wrists will not like lifting nearly 3 kg. If you just want a good-looking 3 kW kettle for much less, see our Russell Hobbs Inspire review. If coffee is the point, a pod machine like the Nespresso Vertuo Pop does without a kettle altogether.
What we could not check
- Noise. We found no decibel figure for the KLF03. Homes & Gardens measured 57–65 dB, but on the KLF04 temperature-control model. One Mumsnet owner calls the KLF03 “quite noisy”.
- One-cup boil time. Smeg claims under a minute for one or two cups. Trusted Reviews timed only one litre and a full kettle, and T3’s 30–50 seconds is not described as a measurement.
- Long-term reliability. Mumsnet’s failure stories are anecdotes from a self-selected thread. No source has published failure rates, and we could not read the review text behind John Lewis’s lower 4.1 score.
- Weight. Four published figures range from “over 1.2 kg” to 1.65 kg. We think the difference is whether the base was included, but no source says so.
- Extended guarantee. Smeg UK offers a 5-year warranty on “eligible” products if you register within 90 days. The eligibility list and Smeg’s help pages would not load, so we cannot confirm that kettles qualify. Assume two years.
- Smeg’s stock status. Smeg’s UK catalogue pages showed “out of stock” for every colour we tried. Its separate shop and AO were selling it. Check stock before you order.
- Which? results. We did not find a public Which? figure for this kettle.
- The videos. We confirmed all three by finding the exact watch link and title in two differently worded searches, not by opening them. The listings did not show channel names, and we have not checked any times the videos show. One video shows the Australian model.
Sources and prices last checked 8 October 2026. Smeg kettle prices change often. Check the price in front of you against the £159.95 and £189.95 full prices before you treat it as a deal.