Requirements · Energy efficiency
Reading energy labels before replacing a major appliance
Last updated 25 October 2026 · 2 sources listed · Reading time about 3 minutes
Short answer
Energy labels summarise a product's consumption under standard test conditions and let you compare similar products. Check the rating class, the annual energy figure, capacity, programme used for testing and extra data such as noise and water use. Label systems differ by region and are periodically rescaled, so compare only products rated under the same scheme, and match capacity to household size.
Who this is for: A household replacing a fridge, washing machine, dryer or similar appliance and trying to use energy labels sensibly.
What to evaluate
Label scheme and scale
Different regions use different scales, and rescaling changes what a given class means.
How to check: Read the label's scheme and check your regulator's guide to interpreting it.
Annual consumption figure
This number is more useful than the letter for comparing similar products.
How to check: Compare kilowatt-hours per year across products of the same capacity.
Capacity versus household size
An oversized unit wastes energy; an undersized one is used more often.
How to check: Match drum size or volume to real usage.
Test programme
Labels assume a standard programme that may not be what you use.
How to check: Look at which programme the label refers to and how it relates to your habits.
Water and noise data
Washing machines and dishwashers also use water, and noise matters in open plans.
How to check: Check those entries on the label.
Repairability and lifespan
A longer-lived appliance reduces overall footprint.
How to check: Ask about spare parts availability and warranty.
Comparison
| Appliance | Good when | Watch out for |
|---|---|---|
| Refrigerator | Size matches household and sits away from heat | Oversizing and placing near ovens |
| Washing machine | Eco programme suits your loads | Label programme differs from daily use |
| Heat-pump dryer | Dry regularly indoors with space | Longer cycle times |
| Dishwasher | Run full loads | Half-loads waste water and energy |
Decision worksheet
Rate up to three options against this guide’s own criteria. It runs in your browser and saves only on this device. It is a thinking aid, not a recommendation.
1. Have you checked each criterion?
0 of 6 criteria checked.
2. Compare options (0 = fails or unknown, 3 = meets it well)
| Criterion | |||
|---|---|---|---|
| Label scheme and scale | |||
| Annual consumption figure | |||
| Capacity versus household size | |||
| Test programme | |||
| Water and noise data | |||
| Repairability and lifespan | |||
| Total (max 18) | 0 | 0 | 0 |
Questions to ask before you commit
- Which scheme and version of the label does this product carry?
- What is the annual energy figure?
- What programme was tested?
- What capacity is this and how does it fit my household?
- How noisy is it?
- Are spare parts and repair guaranteed for a set period?
- What warranty is included?
- Is there a disposal or take-back arrangement for the old unit?
Typical trade-offs
Buy the top efficiency class
- Upside
- Lower running consumption
- Downside
- Higher upfront outlay and potentially more complex electronics
Buy a mid-range class
- Upside
- Balanced cost
- Downside
- Higher usage over life
Repair the old appliance
- Upside
- Avoids embodied energy of a replacement
- Downside
- Old units may be inefficient and unreliable
Common mistakes
- Comparing labels from different schemes.
- Buying a larger capacity than needed.
- Ignoring how you actually run the appliance.
- Discarding a repairable appliance with a minor fault.
- Forgetting to dispose of the old appliance properly.
Related questions
Is the highest class always best?
Not always. Higher classes use less energy under standard test conditions, but price, capacity, noise and features also matter. Compare the annual energy figures between products of similar size rather than comparing classes alone, and consider how often you will use the appliance. For rarely used items such as a spare freezer or a second television, efficiency matters less than purchase cost, while for items running continuously it matters a great deal.
Why did the label scale change?
Regulators rescale labels as products improve, so that the top classes remain meaningful and there is room above the typical product. This means older and rescaled labels are not directly comparable, and a class that looked modest before may now represent a strong product. Look at which scheme the label belongs to, and use the annual energy figure in kilowatt-hours as the common measure when comparing across shops and generations of label.
Do energy labels reflect real use?
They reflect standardised tests, which are useful for comparing products fairly but may differ from your habits, load sizes, room temperatures and cycle choices. A dishwasher label, for example, assumes a particular programme, while many households use faster ones. Use the label as a guide to relative efficiency and adjust your expectations for your own usage. Independent consumer testing, where available, can add information about real performance, noise and durability.
What should I do with my old appliance?
Follow local rules for electrical waste rather than leaving it at the kerb or dumping it. Retailers often take back old units on delivery of a replacement, and municipalities run collection points for appliances. Fridges and freezers contain refrigerants and insulating gases that must be handled by approved recycling processes. If the old unit still works, donation or resale to a reuse charity may extend its life, provided it is safe.
Sources and further reading
These pages were reachable when we last checked. They informed definitions and rules referred to above; they do not endorse this guide. Where rules differ by country, check the authority for your location.
- ENERGY STAR — U.S. Environmental Protection Agency, retrieved 27 October 2026
- Energy, climate change, environment — European Commission, retrieved 27 October 2026
Related guides
How to choose · Energy efficiency
Which insulation upgrade to do first in an existing home
Start with measures that stop the largest and cheapest losses: draught-proofing, loft or roof insulation, and cavity or wall insulation where suitable, followed by floors and glazing. Order depends on construction, moisture risk and ventilation. A home energy audit or heat-loss assessment will show where heat escapes, and building type determines which techniques are safe.
Comparison · Energy efficiency
Professional energy audit or do-it-yourself assessment
A professional audit uses diagnostic tools such as blower-door tests, thermal imaging and combustion safety checks to quantify losses and hazards, and may be required for some support schemes. A do-it-yourself walkthrough can find obvious gaps and appliance waste at no charge. Combine both: start with a self-check, then commission a professional audit for larger investments.
Problems & fixes · Energy efficiency
Condensation and damp after improving insulation: causes and fixes
Condensation arises when warm, moist indoor air meets cold surfaces. Tighter buildings retain moisture unless ventilation is adequate, and insulation can move the cold point to new places. Distinguish condensation from rising damp or leaks, measure humidity, improve extraction in kitchens and bathrooms, keep trickle vents open, and seek professional diagnosis when patterns suggest a defect rather than lifestyle moisture.
How to choose · Water and utilities
Which household water-saving measures to prioritise
Start with leaks, since a running toilet or dripping tap wastes steadily, then fixtures such as showerheads, taps and toilets, appliance choices, and outdoor use. Check your meter overnight to detect hidden leaks. Habits like shorter showers matter, but hardware changes work without constant attention. Where water is metered, savings show on bills; where not, they still reduce hot water energy and local strain.
How to choose · Home improvement
How to choose a washing machine
Pick a washing machine by drum capacity relative to your typical load, the programmes you will actually use, spin performance and noise for your layout, water and energy efficiency labels, and serviceability. Front-loaders generally use less water and treat clothes gently, top-loaders suit tight or accessibility needs, and a motor type and spare-parts availability often predict how long it lasts.
Problems & fixes · Water and utilities
Why a water bill jumps and what to do
A jump usually comes from a leak, such as a running toilet, dripping tap, underground pipe or irrigation fault, an estimated reading corrected later, a meter fault, a billing change, or a genuine use change like guests or a pool. Check the meter with everything off, compare readings with the bill, inspect fixtures, and raise a written query with the provider. Allowances for leaks vary by provider.
Comparison · Heating systems
Heat pump or boiler when replacing a heating system
A boiler makes heat by burning fuel at high flow temperature; a heat pump moves heat from air, ground or water and works best delivering lower-temperature heat over long periods. The decision turns on the building's heat loss, the emitters, available space, local energy prices, and the support rules in your country. A heat-loss survey, not a sales visit, should set the answer.