Available 
Samsung Series 6 AI Energy SpaceMax™ RB38C602CWW 203cm 70/30 Total No Frost Fridge Freezer
from £679.
£679
Rated 4.8 / 5 from up to 478 reviews
Colours tracked: White
Guide
How to choose a fridge freezer: size, style, energy use and features
Choose a fridge freezer by measuring fit first, then comparing capacity, energy label and convenience features using three AO examples as practical comparison points.
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Last verified: 2026-07-21
Fridge freezer types explained
Start with the style that fits your kitchen, because space and installation matter before extras do. Freestanding models like the Samsung Series 6 AI Energy SpaceMax™ RB38C602CWW at £679 are usually the simplest place to begin if you want a lower entry price and a less demanding install. Built-in designs suit fitted kitchens where a neater look matters, but they need more exact cabinet planning and careful measuring. If you have more room and want a larger storage layout, American-style options such as the Hisense PureFlat Infinite RQ758N4SWSE at £1,199 and the Samsung Family Hub™ RS90F66BEFEU at £2,499 can be a better match, especially for bigger households.
How much capacity do you really need?
Capacity should be judged against household size and shopping habits, not litres alone. A couple or smaller household may be comfortable with a standard freestanding fridge freezer, while families that batch cook or buy in bulk often benefit from a larger multi-door or American-style design. The three AO examples show the price spread clearly, from £679 for the Samsung RB38C602CWW to £1,199 for the Hisense RQ758N4SWSE and £2,499 for the Samsung Family Hub RS90F66BEFEU. That gap shows why bigger is not automatically better: the right model is the one that fits your food storage needs without paying for space you will not use.
What energy features are worth paying for?
Use the UK energy label as your main comparison point, because it is a regulated way to judge household refrigeration products. Frost-free or Total No Frost designs, which appear across this shortlist, are mainly about convenience: they reduce manual defrosting and help keep storage usable, but they do not automatically mean lower running costs. Smart or AI-branded features can add convenience, yet they should be treated as extras rather than proof of better efficiency. If you are comparing AO fridge freezers, look at the label first, then decide whether the convenience features are worth the extra cost.
Useful extras that make day-to-day life easier
Extras are worth paying for when they solve a real use case. The Samsung Family Hub™ RS90F66BEFEU at £2,499 is the most premium example here, with plumbed setup and connected features that may suit a busy kitchen and frequent use. The Hisense PureFlat Infinite RQ758N4SWSE at £1,199 sits in the middle, offering a larger American-style layout without reaching the Samsung Family Hub price. If you want the lower-cost entry point, the Samsung Series 6 AI Energy SpaceMax™ RB38C602CWW at £679 shows how a freestanding model can keep the decision more straightforward when smart controls are not a priority.
Measurements and installation checks before you buy
Measure the full space, not just the cavity width, and leave room for doors to open, ventilation and any surrounding cabinets. AO’s measurement guidance makes clear that larger styles, especially American fridge freezers, usually need more space than standard integrated formats, so the Hisense and Samsung American-style models deserve extra checking around width, depth and clearance. Before you buy, verify the exact dimensions, required ventilation gap, hinge direction and door opening arc on the retailer page. That is especially important if you are comparing the Samsung RB38C602CWW against the larger Hisense and Samsung Family Hub models, because a model can look similar online but still fit very differently in a real kitchen.
What the wider research suggests
The most useful decision order is the one AO itself points shoppers toward: compare size, split type or style, energy efficiency and features in that order. That approach fits this shortlist well, because the three models span a £679 Samsung RB38C602CWW freestanding option, a £1,199 Hisense PureFlat Infinite RQ758N4SWSE multi-door model and a £2,499 Samsung Family Hub RS90F66BEFEU premium American-style option. Public ratings are strong across the group at 4.8 to 4.9, and review counts range from 478 to 4,310, but those figures only suggest shopper interest and confidence; they do not prove better cooling, quieter running or lower energy use. Some retailer page details were not fully visible during checking, so the safest approach is to use the shortlist as a comparison set and confirm the latest specifications before you buy.
How to turn the shortlist into a buying decision
Treat this shortlist as a fit-and-value comparison rather than a winner list. The Samsung Series 6 AI Energy SpaceMax™ RB38C602CWW at £679 is the lower-cost freestanding option, the Hisense PureFlat Infinite RQ758N4SWSE at £1,199 sits in the middle with a larger American-style format, and the Samsung Family Hub™ RS90F66BEFEU at £2,499 is the premium plumbed choice for shoppers who want the most convenience-led package. Samsung appears twice in the shortlist, while Hisense gives you a different brand and a mid-price alternative, so it is worth comparing installation type, current price and the latest retailer details side by side before deciding whether the added features justify the jump. For this guide, the smartest final check is still practical fit: width, depth, door swing and ventilation space can matter more than a long feature list.
Electricals to use as comparison examples
Available 
Hisense PureFlat Infinite RQ758N4SWSE Total No Frost Multi-door American Fridge Freezer
from £1,199.
£1,199
Rated 4.9 / 5 from up to 3,257 reviews
Colours tracked: Stainless Steel
Available 
Samsung Family Hub™ RS90F66BEFEU Plumbed Total No Frost American Fridge Freezer
from £2,499.
£2,499
Rated 4.8 / 5 from up to 4,310 reviews
Colours tracked: Black
Retailer details used
Last checked 2026-07-21. 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.
- Fridge Freezer Buying Guide | Find the Right One | ao.comAO buying-guide themes: size, split type, features, energy efficiency
- Fridge freezer measurement guide| Expert AO AdviceFit checks, integrated vs freestanding, door clearance, standard integrated sizing
- Cooling Hub | ao.comAO context on guides, smart features and organization
- Cooling Appliances | Fridges & Freezers | ao.comIllustrative review counts and ratings shown on category listings
- Refrigerators | ENERGY STAREnergy-efficiency and configuration guidance
- Purchasing Energy-Efficient Residential Refrigerators | Department of EnergyAppropriate size by household use and ENERGY STAR cost-effectiveness guidance
Helpful next reads
Use these related electricals guides and reviews to turn the advice into a practical shortlist.
Firmness questions
How do I choose the right fridge freezer size for my household?
Start with the number of people in the home, then think about how often you shop and how much fresh food you keep. A smaller or standard freestanding model may suit lighter use, while a larger American-style design is usually better for families and bulk storage, provided you have the space.
Is frost-free worth paying for on a fridge freezer?
For many shoppers, yes. Frost-free or Total No Frost models reduce manual defrosting and help keep shelves and drawers usable, but they are a convenience feature rather than proof of lower running costs, so the energy label still matters.
Should I buy freestanding, built-in or American-style?
Choose freestanding if you want easier placement and more straightforward buying, built-in if you need a fitted kitchen look, and American-style if you have the space and want more capacity. The Samsung RB38C602CWW is a lower-cost freestanding example, while the Hisense and Samsung Family Hub models show how larger formats change the space and price conversation.
Do smart fridge freezers offer convenience only, or better value too?
They mainly add convenience such as app-linked controls, alerts or a more feature-rich interface. The Samsung Family Hub™ RS90F66BEFEU and Hisense PureFlat Infinite RQ758N4SWSE show how connected features can push the price up, so it is worth checking whether those extras matter to you before paying more.
What should I check for door clearance, depth and ventilation before buying?
Check the full width, depth and height, then leave room for the doors to swing open and for air to circulate. AO’s measurement guidance is especially relevant for larger American-style fridge freezers, because they can need noticeably more space than a standard integrated or freestanding model.