Best energy-efficient washing machines UK 2026 — budget
The most energy-efficient washing machines under £400 — ranked by kWh per 100 cycles, not by energy label alone. All A-rated. Running costs calculated at the July 2026 Ofgem price cap of 26.11p per kWh.
The most energy-efficient freestanding washing machine under £400 is the Hoover HGD 4910C-80 at £300 — 30 kWh per 100 cycles, about 7.8p a wash. But it is the value paradox in a single machine: it wins on running cost while scoring just 78 on the WAC Score. For roughly the same electricity, the Candy GD 410B9B-80 (£299) scores 85 — the efficient buy most people should actually make.
There is a particular trap waiting in any list ranked purely by energy use, and this guide walks you straight up to it before pulling you back. The machine at the very top — the one with the lowest number in the kWh column — is almost never the machine you should buy. Efficiency guides sort by a single figure, and a single figure can be won by a hair: shave one kilowatt-hour off the annual total and you leap to first place, even if you are dearer to buy, thinner on features and worse value than everything beneath you. The washing machine that runs cheapest is not automatically the washing machine that costs least to own.
So read this list the way you would read a spec sheet with a sceptical friend. The top of the table tells you which machine sips the least electricity; the WAC Score column tells you which machine is actually worth your money once running cost, reliability, features and price are weighed together. Where those two disagree — and here they disagree sharply — the WAC Score is the one to trust. The genuinely efficient and sensible machines sit a rung or two down, and we point straight at them.
Every machine here is A-rated, freestanding and under £400, with kWh and cost-per-wash calculated at the July 2026 Ofgem rate of 26.11p per kWh across roughly 220 washes a year. We cap each brand at two machines so one name cannot fill the list.
Running cost formula: kWh per 100 cycles × 26.11p ÷ 100 = cost per wash. At 5 loads per week, multiply by 260 for the annual figure. All kWh figures are measured on the eco programme.
At a glance — budget machines ranked by energy use
| Machine | kWh / 100 cycles | Cost / wash | WAC Score | Price |
|---|---|---|---|---|
| Hoover HGD 4910C-80 | 30 kWh | 7.8p | 78 | £300 |
| Gorenje WG2P84A32/UK | 33 kWh | 8.6p | 80 | £229 |
| Candy GD 49B10B-80 | 33 kWh | 8.6p | 83 | £269 |
| Candy GD 410B9B-80 | 33 kWh | 8.6p | 85 | £299 |
| Beko BM5WT6843TW | 33 kWh | 8.6p | 73 | £349 |
Our top picks in detail
Hoover HGD 4910C-80
9.0kg · 1400rpm · A rated · White
The only machine under £400 to dip below 33 kWh — 30 kWh per 100 cycles, about 7.8p a wash — so on pure efficiency it tops the guide. Read the small print first. Its WAC Score is 78, held down by the lowest value score here, because it uses barely 3 kWh less than the pack behind it: a saving worth well under £5 a year. It leads the kWh column, not the kitchen. Almost everyone should read on.
Gorenje WG2P84A32/UK
8.0kg · 1400rpm · A rated · White
The one to actually buy if the electricity bill is the point. At £229 the Gorenje is the cheapest machine in the guide and among the most efficient at 33 kWh (8.6p a wash), which is why it posts a WAC Score of 80 despite a lean feature set. Lowest total cost of ownership on the page, full stop.
Candy GD 49B10B-80
9.0kg · 1400rpm · A rated · Black
The value Candy of the pair. Same 33 kWh running cost as the machines around it, at £269, for a WAC Score of 83. If you want a keenly-priced, efficient all-rounder and can live without steam or an app, it does the job with no fuss.
Candy GD 410B9B-80
10.0kg · 1400rpm · A rated · Black
The smart buy of this guide. It gives up just a whisker of efficiency to the leader — 33 kWh, 8.6p a wash — while posting the highest WAC Score of any machine here at 85. For £299 you get the best-rounded machine that is still genuinely efficient: efficiency wins the ranking above, but this wins the kitchen.
Beko BM5WT6843TW
8.0kg · 1400rpm · A rated · White
Efficient on paper, but the guide's clearest lesson in why kWh is not the whole story. At 33 kWh it matches the pack, yet at £349 it is the dearest here and its WAC Score of 73 is the lowest of the five. You are paying more for the same running cost and less machine. Included because it is genuinely efficient; ranked last because efficiency is all it brings.
The bottom line
Here is the whole guide in one line: the Hoover HGD 4910C-80 wins the kilowatt-hour column, and the Candy GD 410B9B-80 wins your money. The gap in running cost between the most and least efficient machine here is a few pounds a year; the gap in what they are like to own is far wider. Buy on the WAC Score, treat efficiency as the tie-breaker it is, and you will not go wrong. If you want the fuller picture across the whole budget band, our best budget guide ranks the same price bracket on overall value rather than energy alone.
Frequently asked questions
What is the most energy-efficient washing machine under £400?
The Hoover HGD 4910C-80 is the most efficient in our current data at 30 kWh per 100 cycles (about 7.8p a wash) for £300. But it uses only marginally less electricity than machines behind it while costing more overall, so its WAC Score is 78. For the best balance of efficiency and value we would point most buyers at the Candy GD 410B9B-80 (WAC Score 85).
How much does energy efficiency actually save on a washing machine?
Less than most people expect. At the July 2026 Ofgem rate of 26.11p per kWh, the difference between the most and least efficient machine in this guide is only a few kilowatt-hours per 100 cycles — roughly a few pounds a year for a typical household. Over a decade that adds up, but it rarely justifies paying a large premium up front. Buy price and overall quality usually matter more than the last kilowatt-hour.
What does kWh per 100 cycles mean?
It is the energy label's standard measure: the electricity a machine uses across 100 wash cycles on the standard eco 40–60 programme, in kilowatt-hours. Lower is better. To turn it into a running cost, multiply by your electricity rate (26.11p per kWh as of July 2026) and divide by 100 to get the cost per wash. Every figure in this guide is calculated that way.
Is an A-rated machine always cheaper to run?
Not necessarily cheaper than every other A-rated machine — the A grade is a band, and machines within it still vary by a few kWh. It will, however, be meaningfully cheaper to run than an older B- or C-rated machine. Every machine in this guide is A-rated under the current (post-2021) label, so differences here come down to the exact kWh figure, which is what we rank on.
Are these washing machines freestanding?
Yes — every machine in this guide is freestanding, a standalone unit you can plumb in anywhere. We do not include integrated (built-in) machines, which need a fitted kitchen cabinet and a cupboard door and are a separate category.
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