Available 
LG V7 FDV709W Connected 9Kg Heat Pump Tumble Dryer with Allergy Care, Gentle Care, A++ Energy Rating
from £699.
£699
Rated 4.8 / 5 from up to 858 reviews
Colours tracked: White
Guide
How to choose an energy-efficient electrical for your home
Compare energy-efficient AO electricals by energy label, annual kWh, capacity and fit first, then use price and review details to narrow the shortlist.
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Last verified: 2026-08-19
What energy-efficient means in practice
For shoppers, energy-efficient means more than a good-looking label. Start by checking the energy class, annual kWh if it is shown, and whether the capacity suits your household, because an oversized appliance can waste more than it saves. The three AO examples here make that clear: the LG V7 FDV709W is a 9kg heat pump tumble dryer with an A++ rating at £699, the Samsung Series 6 DV90T6240LN is a 9kg heat pump tumble dryer with an A+++ rating at £849, and the Samsung Series 5 AI Energy WW10FG5U34ABEU is a 10kg washing machine with 1400 rpm at £499. That mix shows why product type matters as much as the sticker label, especially when you are comparing laundry appliances with different jobs to do.
The features that reduce electricity use
In laundry appliances, the most useful efficiency features are the ones that change how the machine dries or washes, not just how it looks on the product page. Heat pump tumble dryers recycle heat, which is why both LG and Samsung examples in this guide use that format, while lower-temperature washing and full loads are the practical habits that help washing machines stay efficient. Smart controls can be helpful if they let you schedule cycles or monitor usage, but they are a bonus rather than the main reason to buy. For dryers, moisture sensors, capacity, noise and expected cycle time are worth comparing alongside the energy label, because the cheapest-running option is not always the one that fits daily routines best.
Which appliance types matter most for energy bills
The appliance type matters because the biggest energy impact usually comes from the job it does, not the brand name on the front. In this shortlist, the two 9kg tumble dryers are useful if you want to compare drying efficiency, while the 10kg Samsung washing machine is more relevant if you are replacing a family washer and want a larger drum for fuller loads. A 10kg washing machine can suit bigger households better than a 9kg dryer, so capacity needs to match real laundry habits rather than a rough guess. If you mainly want to lower electricity use, prioritise high-use appliances first: laundry, then other heavy-running categories such as fridge freezers if you are expanding your search later.
How to balance upfront price vs long-term value
The price spread here is a useful clue, not a final verdict. At £499, the Samsung Series 5 AI Energy WW10FG5U34ABEU washing machine sits well below the two heat pump dryers, while the LG V7 FDV709W at £699 and Samsung Series 6 DV90T6240LN at £849 show how a higher upfront price can come with a stronger energy label or extra drying features. That does not mean the most expensive model is automatically better value; it means you should compare the price against the appliance type, capacity and the energy features you will actually use. If your household dries laundry often, a heat pump dryer may justify more spend than a basic machine, but the live AO page should always be checked for the current price, offers and included services before you decide.
What the research and shortlist suggest
The clearest takeaway is to compare the energy label, annual kWh and capacity together instead of relying on marketing language alone. The visible review picture is encouraging across this small shortlist, with all three examples showing a 4.8 average rating, but the review counts differ, so confidence is not identical from product to product. The LG dryer has the largest owner-review base of the two dryers, while the Samsung washing machine shows the strongest review volume overall, which may help shoppers feel more comfortable but should not replace checking the live product page. Some retailer details were not fully available during checking, so treat this as a comparison shortlist rather than a final market ranking and verify the current AO details before buying.
How to turn the shortlist into a buying decision
Use the shortlist to compare fit first, then price and features. The LG V7 FDV709W and Samsung Series 6 DV90T6240LN are both 9kg heat pump dryers, so the key questions are whether A++ at £699 or A+++ at £849 better suits your running-cost goals and budget, while the Samsung Series 5 AI Energy WW10FG5U34ABEU at £499 is the lower-cost option if you need a 10kg washing machine rather than a dryer. Before ordering, check installation type, dimensions and clearance, noise level, delivery options and warranty on the live AO page, because those details can change the real value more than a small price gap. This is a cautious shortlist to compare, not a definitive ranking, so the right choice is the one that fits your space, usage and laundry pattern best.
Electricals to use as comparison examples
Available 
Samsung Series 6 DV90T6240LN Connected 9Kg Heat Pump Tumble Dryer with Optimal Dry, Hygiene Care, A+++ Energy Rating
from £849.
£849
Rated 4.8 / 5 from up to 747 reviews
Colours tracked: Graphite
Available 
Samsung Series 5 AI Energy WW10FG5U34ABEU 10kg Washing Machine with 1400 rpm
from £499.
£499
Rated 4.8 / 5 from up to 2,943 reviews
Colours tracked: Black
Retailer details used
Last checked 2026-08-19. The source list below is included to help you check the details behind the comparison. Always confirm the latest price, delivery cost, stock status and product details with the retailer before buying.
- Home appliances and energy efficiency ratings | Energy Saving Trustenergy buyer criteria
- How to save energy when using your washing machine | Energy Saving Trustwashing energy advice
- LG V7 FDV709W heat pump tumble dryer | AOretailer specs and reviews
- Samsung DV90T6240LN heat pump dryer | Samsung UKmanufacturer specs and reviews
- Clothes dryer buying guide | Consumer Reportsdryer buyer criteria
- Samsung Series 6 DV90T6240LN Connected 9Kg Heat Pump Tumble Dryer with Optimal Dry, Hygiene Care, A+++ Energy RatingAO shortlist product page
Helpful next reads
Use these related electricals guides and reviews to turn the advice into a practical shortlist.
Firmness questions
What should I check first when buying an energy-efficient electrical on AO?
Start with the appliance type, then check the energy label, annual kWh if shown, capacity and dimensions. For laundry, a heat pump dryer such as the LG V7 FDV709W or Samsung DV90T6240LN may suit different budgets, while the Samsung 10kg washer is aimed at larger wash loads.
How do I compare energy ratings with annual kWh and capacity?
Use them together, not separately. A better energy label can still be a poor fit if the drum is too large or too small for your household, and annual kWh is the more practical clue for running costs when it is listed on the product page.
Is a more expensive heat pump dryer always better value?
Not always. The Samsung Series 6 DV90T6240LN is £849 versus £699 for the LG V7 FDV709W, so the extra spend only makes sense if the higher energy class, features and fit are worth it for your laundry pattern. Check the live AO page for the current price and what is included.
Should I choose a washing machine or tumble dryer based on household size?
Yes. A 10kg washing machine like the Samsung Series 5 AI Energy model is designed for bigger wash loads, while the two 9kg dryers may suit households that dry smaller or medium-sized loads more often. Match the capacity to the way you actually wash and dry.
Do visible ratings mean I can skip checking the live product page?
No. A 4.8 rating is a useful signal, but review counts vary and retailer details can change, so always verify the current price, dimensions, installation type, delivery and warranty before buying.