If you’re upgrading your kitchen, it’s hard to ignore the sleek, flat doors and huge storage of modern American fridge freezers. The Hisense PureFlat Infinite RQ758N4SASE Total No Frost American Fridge Freezer in stainless steel is a great example of what this style offers: masses of space, clever cooling and a design that actually looks good in a British kitchen. In this guide, we’ll walk through what to know before you buy a big multi-door fridge freezer like this, how to choose the right features for your home, and which close alternatives are worth a look.
Why the Hisense PureFlat Infinite style works so well in UK kitchens
American fridge freezers used to be chunky beasts that only really suited huge, open-plan spaces. The newer PureFlat style smooths the doors, tucks away handles and keeps the lines clean, so they sit comfortably in a modern UK kitchen without dominating everything.
The Hisense PureFlat Infinite RQ758N4SASE brings that look together with a practical multi-door layout. The wide top section makes it easy to see all your fresh food at once, while the lower compartments give you freezer storage that doesn’t feel like a bottomless pit. If you want a deeper dive into layout, storage and day-to-day usability, you can read our full review of the Hisense PureFlat Infinite RQ758N4SASE.
Understanding the multi-door American layout
Before getting too attached to any single model, it helps to understand how this type of fridge freezer is laid out and why it might suit you better than a traditional side-by-side.
Fridge at eye level
Most four-door American models, including the RQ758N4SASE, keep the main fresh food area in the top section. That means milk, leftovers, yoghurts and salad live between waist and eye level, rather than you constantly bending down like you would with a bottom-mounted fridge.
Split lower compartments
The lower part is divided into two separate compartments, usually both running as freezers. The big advantage over a tall, single freezer column is organisation: you can keep long-term frozen food on one side and everyday items on the other, so you’re not digging around for the kids’ fish fingers.
Some alternatives in the PureFlat range also add more flexible zones. For example, models like the Hisense PureFlat Infinite RQ758N4SWSE Wifi Connected Non-Plumbed Total No Frost American Fridge Freezer are designed to blend generous storage with smart controls and a non-plumbed dispenser, which can be handy if you want chilled water without rethinking your pipework.
Getting the size and fit right
Capacity is a big draw with American fridge freezers, but in British homes the more important question is often: will it fit?
Measure the route in, not just the gap
Start by measuring the space where the appliance will live, including height, width and depth. But don’t stop there. Measure doorways, hallways and any tight corners between the front door and the kitchen – there’s no point buying a huge appliance that can’t get past the banister.
Think about depth and door clearance
Flat-fronted designs sit neatly with surrounding units, but they’re still deeper than a standard freestanding fridge. Allow for the doors to open fully so you can slide drawers out all the way. Slimmer American-style options like the Hisense PureFlat Slim RQ5P470SYFD Non-Plumbed Total No Frost American Fridge Freezer are worth considering if you’re short on depth but still want the American look.
Total No Frost: why you don’t want to compromise here
Most premium American fridge freezers now come with some form of frost-free technology, but “Total No Frost” is the one to look for. The Hisense PureFlat Infinite RQ758N4SASE has Total No Frost, which means cold air circulates in both fridge and freezer to stop ice building up on the walls and drawers.
That matters for two reasons. First, you avoid the dreaded weekend of emptying the freezer and chipping away at solid ice. Second, your food stays closer to the intended temperature, which helps with both freshness and energy efficiency. If you’re comparing with other PureFlat models like the Hisense PureFlat RF749N4SWFE Non-Plumbed Total No Frost American Fridge Freezer, this feature is now pretty much a must-have rather than a luxury.
Energy rating and running costs
The RQ758N4SASE carries an E energy rating under the newer, stricter EU and UK scale. On paper that might not sound impressive, but bear in mind the scale was reset a few years ago; many A-rated fridges from the old system would land around D–F today.
With something this big, a sensible rating makes a real difference over its lifetime. To keep running costs down, look for:
- Consistent temperatures (no big swings that force the motor to work harder)
- Bright but efficient LED lighting
- Well-sealed doors that close smoothly every time
- Clear temperature controls so you avoid setting it colder than necessary
If you want a similar energy profile with more connected features, the Hisense PureFlat Infinite RQ758N4SWFE Wifi Connected Total No Frost American Fridge Freezer keeps the E rating but adds smart functionality, which we’ll come onto next.
Do you need smart and Wi‑Fi features on a fridge freezer?
Connected appliances are becoming the norm, but not everyone is convinced they’re useful in the kitchen. Wi‑Fi linked American fridge freezers typically offer app-based monitoring and finer control, rather than gimmicks.
For example, the RQ758N4SWFE variant builds on the core PureFlat Infinite design with Wi‑Fi connectivity. That can let you tweak temperatures remotely, get alerts if a door is left open, or activate quick-cool and quick-freeze modes when you’ve just done a big shop. If that sounds appealing, you can read our full review of the Hisense PureFlat Infinite RQ758N4SWFE to see how those smart features work in practice.
If you’re more interested in the core performance and don’t see yourself opening an app to check your fridge, the non-connected RQ758N4SASE keeps things simpler while still delivering the key benefits of Total No Frost and generous capacity.
Water and ice: plumbed vs non-plumbed options
For many people, an American fridge freezer isn’t complete without chilled water and perhaps ice on tap. But there’s a decision to make between plumbed and non-plumbed designs.
Plumbed dispensers
Plumbed models connect to your home’s water supply and offer a constant stream of chilled water and often ice. They’re excellent if you’re planning a new kitchen and can run pipework behind cabinets. The trade-off is that once it’s in, it’s not easy to move without calling a plumber back in.
Non-plumbed dispensers
Non-plumbed options make life easier if you don’t want or can’t have new pipework. You fill an internal tank manually, and the appliance chills it. Several PureFlat alternatives, such as the Hisense PureFlat Infinite RQ758N4SWSE and the slightly different-door-layout Hisense PureFlat RF749N4SWFE, are designed with non-plumbed systems, combining flexibility with the convenience of on-door water.
The RQ758N4SASE focuses on clean design and cooling performance rather than adding dispensers, which some people actually prefer. A plain, flat front makes it easier to integrate with existing cabinetry and keeps the stainless-steel finish looking uncluttered.
Organisation: making the most of a huge interior
Once you have this much space, how you use it matters just as much as the raw litres. The RQ758N4SASE’s wide shelving, crispers and lower compartments lend themselves to neat, visible storage rather than piling everything up.
- Use one lower compartment for long-term frozen storage and the other for everyday, quick-access items.
- Group dairy, cooked meats and leftovers together on eye-level shelves so you see them before they go to waste.
- Keep drinks and condiments in the door racks, saving the main shelves for bulkier items.
- Consider shallow containers or baskets in the freezer compartments to stop things migrating to the back.
If you’re curious how different Hisense layouts handle this, our in-depth look at the Hisense PureFlat Slim RQ5P470SYFD explores how a slimmer chassis approaches shelving and drawers compared with the larger Infinite models.
Noise, finish and day-to-day living
Big fridge freezers run for most of the day, so their sound and finish matter more than you might think. PureFlat designs typically use modern compressors that run at a steady hum rather than constantly clicking on and off, which can make them quieter in real life than older, smaller appliances.
The stainless-steel finish of the RQ758N4SASE looks premium but will pick up fingerprints like any steel surface. A quick regular wipe with a microfibre cloth keeps it looking sharp. If you prefer a darker, more forgiving look, the black stainless-steel finish on models like the RQ758N4SWFE and RF749N4SWFE is worth exploring in the flesh – darker doors often blend nicely with black ovens and hobs.
Choosing between the key Hisense PureFlat options
Sticking within the same family can make comparing models much easier. Here’s how the main Hisense PureFlat American options in this range broadly position themselves:
- Hisense PureFlat Infinite RQ758N4SASE – Stainless-steel multi-door American fridge freezer with Total No Frost and an E rating, focused on core cooling performance and a clean, handle-light look. Ideal if you want lots of space without smart extras or dispensers. For more detail, read our full review of the Hisense PureFlat Infinite RQ758N4SASE.
- Hisense PureFlat Infinite RQ758N4SWFE – Adds Wi‑Fi connectivity and a darker stainless finish while keeping the Total No Frost and generous capacity. Best if you like the idea of smart monitoring and remote control; our full review of the RQ758N4SWFE walks through the connected features.
- Hisense PureFlat Infinite RQ758N4SWSE – Wi‑Fi connected and non-plumbed, giving you smart features and a dispenser without needing a water pipe. If flexibility of installation matters, the RQ758N4SWSE review is a good place to start.
- Hisense PureFlat RF749N4SWFE – A slightly different PureFlat layout, still non-plumbed and Total No Frost with an E rating. It’s a strong alternative if you like the styling but want to compare interior arrangements; you can explore that in our RF749N4SWFE review.
- Hisense PureFlat Slim RQ5P470SYFD – A slimmer, D-rated non-plumbed American-style option aimed at tighter spaces while still offering Total No Frost and the PureFlat look. Our review of the RQ5P470SYFD covers how it manages capacity inside a narrower body.
Care, cleaning and keeping it fresh
Once installed, a little routine care keeps a large American fridge freezer smelling fresh and running smoothly.
- Give shelves and crispers a quick wipe every week or two, rather than waiting for spills to dry on.
- Use bicarbonate of soda in a small open container to absorb lingering odours.
- Check door seals occasionally; if crumbs or dried spills sit on the gasket, warm air can creep in.
- Keep the top of the appliance relatively clear so heat can escape properly.
Thanks to Total No Frost, you won’t be defrosting ice, but it’s still worth pulling the fridge out once in a while to gently dust any exposed coils or vents at the back. That helps the compressor work efficiently and can trim a little off your energy usage.
Final thoughts
Moving to a full-size American fridge freezer is one of the biggest upgrades you can make in a kitchen. The Hisense PureFlat Infinite RQ758N4SASE brings together the key ingredients most UK households are looking for: a clean, flat-fronted design, plenty of usable space, modern Total No Frost cooling and an energy rating that makes sense for a large appliance.
If you’re drawn to this style but still weighing up smart features, non-plumbed dispensers or slimmer alternatives, the wider PureFlat range gives you lots of ways to get the same overall look. Take the time to compare the interior layouts and features that actually match how you shop, cook and store food, and be sure to check our in-depth review of the Hisense PureFlat Infinite RQ758N4SASE plus the linked alternatives before you make your final choice.