What to Look For in Energy-Efficient Appliances

Why the sticker price is only part of the story

When a fridge, washing machine or dishwasher finally gives up, the instinct is to replace it quickly and cheaply. But a large kitchen appliance is one you will live with for a decade or more, and the purchase price is often the smallest part of what it costs you. A model that is £100 cheaper on the shelf can easily cost £80 to £120 more each year to run, which flips the maths entirely over its lifetime. The trick is to think in terms of total cost: purchase, energy, water, repairs and the years of useful service you actually get.

Reading the energy label properly

Since the UK energy label was revised, the ratings run from A to G, and the scale is deliberately tougher than the old A+++ system. Very few appliances now reach A, so seeing a B or C is not a bad sign — it is simply where the best machines sit. Two numbers matter most:

• Energy consumption per cycle or per year. For fridges and freezers this is usually given in kWh per year; for washing machines, dishwashers and ovens, per 100 cycles. This is the figure to compare directly, because it is measured the same way across brands.
• Water use. On washing machines and dishwashers, water is heated, so litres used per cycle quietly drives much of the energy figure.

Labels also show noise, capacity and, for washing machines, the duration of the eco programme. That last one catches people out. Eco cycles are efficient because they run long and at lower temperatures, often two to four hours. If you habitually choose the quick 30-minute cycle instead, you will not see the running costs the label promises.

Size, capacity and the way you actually cook and wash

Bigger is not automatically worse, but it needs to match your household. A 9 kg washing machine is more efficient per kilogram of laundry than a 6 kg one, yet if you rarely fill it you are heating water and spinning air. The same applies to a large fridge: a half-empty 400-litre model still runs its compressor to hold temperature. As a rough guide, allow around 50 litres of fridge space per person, add a little for a freezer, and think honestly about how often you run a full load.

For ovens, size and insulation matter as much as the rating. A smaller cavity heats faster, and models with good door seals and triple glazing hold heat better. Fan-assisted ovens generally cook faster at a lower temperature than conventional ones, which is a genuine saving if you use it properly.

Also consider whether you need the features you are paying for. Wi-Fi connectivity, ice makers and plumbed water dispensers all add standby consumption and extra things to break. A simple appliance with fewer electronics is often the more sensible long-term buy.

Doing the running-cost maths

Running costs are simple arithmetic once you have two pieces of information: the energy figure on the label and your unit price for electricity, which is printed on your bill in pence per kWh. Multiply the annual kWh by your rate and you have a decent estimate.

• A fridge using 150 kWh a year at 26p per kWh costs roughly £39 annually.
• A fridge using 250 kWh a year costs about £65.
• A washing machine at 0.6 kWh per cycle, run 200 times a year, uses 120 kWh — around £31.

Suddenly the gap between a mid-range and a top-rated appliance looks meaningful. Spread the difference over ten years and it can comfortably exceed the price difference at the till. If you have a smart meter or an in-home display, watch it for a week to see which appliance is really doing the damage.

Repairability and how long it will last

This is the part most buyers overlook, and it is where a slightly higher price often pays off. Appliances fail in predictable ways: door seals perish, drum bearings wear, heating elements scale up, and control boards give out. The question is whether a repair makes financial sense.

• Spare parts availability. Ask how long parts will be made available — good manufacturers offer seven to ten years for common components.
• Accessibility. Models where the filter, seal or element can be reached without dismantling the whole machine are far cheaper to fix.
• Standard parts. Generic hoses, seals and shelves are easier and cheaper to replace than bespoke ones.
• Design life. A machine with a brushless motor or an inverter compressor typically lasts longer and runs more quietly.

It is also worth checking whether the appliance can be repaired by a local engineer rather than requiring a proprietary diagnostic tool. Simple, well-documented machines tend to stay alive longer.

Practical habits that beat any label

Even the best appliance performs poorly if it is used badly. A few habits make a real difference:

• Run washing machines at 30°C and full loads; most modern detergents work perfectly well at low temperatures.
• Keep fridge and freezer coils clear of dust, and leave a gap at the back for airflow.
• Do not overfill the fridge — cold air needs to circulate — but do keep it reasonably full, as the contents help hold the temperature.
• Use the dishwasher's eco programme and scrape rather than rinse plates.
• Defrost freezers before ice builds up, and check door seals by trapping a piece of paper in the door.

Buying well is really about buying once. Match the size to your household, read the label for the numbers that matter, check that spare parts exist, and expect to keep the appliance for a decade. Do that, and the cheapest sticker on the shop floor is rarely the cheapest machine in your kitchen.