A refrigerator is one of the few appliances you buy with the expectation that it will still be running in fifteen years. Which makes it a different kind of purchase than most — you're not just buying for now, you're buying for a household that will change, for energy costs that will compound, and for a reliability record that isn't visible at the point of purchase.
Most people choose a fridge by opening the door, looking at the shelves, and checking the price. This produces adequate refrigerators. Making the decision well requires thinking about a few things that aren't visible on the showroom floor.
Size: measure before you buy anything else
This sounds obvious. It isn't, because the measurement that matters isn't just the space where the fridge will go. It also includes the door swing radius (does the door clear the wall or island when fully open?), the path from the delivery entrance to the kitchen (hallways, tight corners, doorframes), and the ventilation clearance requirements that most manufacturers specify in their installation guides.
Measure the space with a tape measure before you look at any specific models. Width, height, and depth — and note whether the depth includes the door handles, which can add 2–4cm. Integrated fridges that sit behind a cabinet door have their own specific dimension requirements and can't be swapped with a freestanding model of similar capacity without cabinetry changes.
For capacity: a rough guideline is 50–100 litres per person in the household for a family fridge, with single-person households typically needing 100–150 litres total. These are rough guides. If you batch cook and store a lot, go larger. If you shop daily, size matters less.
Types and where each makes sense
Freestanding top-mount (fridge on bottom, freezer on top) is the most common and typically the cheapest. The drawback is ergonomic — the freezer, which is used less frequently, is at eye level, and the fresh food compartment requires bending. For households that use the fridge constantly but the freezer occasionally, this is the wrong configuration.
Freestanding bottom-mount (fridge on top, freezer drawer below) reverses this. The fresh food compartment is at eye level, making it easier to see and access what you have. Generally slightly more expensive than top-mount for equivalent capacity. The freezer as a drawer rather than a door means you access it from above, which some people find awkward.
American-style side-by-side is large, takes significant floor space, and makes both fridge and freezer accessible at full height without bending. The drawback is that the split design means neither side is particularly wide — a full-size pizza box, a large baking sheet, or a wide casserole dish won't fit in the fridge side. Well-suited to large households with significant floor space.
French door (two doors at the top for the fridge, a freezer drawer below) gives full-width fridge space at eye level and has become increasingly popular. Tends to be at the more expensive end.
Integrated fridges fit behind a kitchen cabinet door, creating a seamless kitchen aesthetic. They require the correct cabinet, have less flexibility in placement, and tend to cost more for equivalent capacity. Worth it if kitchen aesthetics are a priority; probably not worth the cost premium purely on function.
Energy efficiency: a ten-year calculation
An A-rated refrigerator in the UK might use 100–150kWh annually. A D or E-rated model of similar size might use 200–250kWh. At current electricity prices (approximately 25p/kWh in the UK, variable elsewhere), the difference is £25–37 per year. Over fifteen years, that's £375–555 in energy costs on top of the purchase price — the same long-term math behind lowering your winter electricity bill. A more efficient fridge that costs £100 more than a less efficient one pays back the premium in energy savings within three to four years.

In the EU and UK, the current energy label scale runs from A (most efficient) to G. Post-2021 label rescaling means that an A-rated fridge today is significantly more efficient than an A-rated fridge from five years ago. Aim for B or above on the current scale. Anything D or below in a new purchase is difficult to justify on energy grounds.
Reliability: the variable no one talks about in the showroom
A refrigerator that runs efficiently for fifteen years is a good purchase. A refrigerator that requires a repair call in year four is not, regardless of how it performed until then. Repair costs for modern fridges are high — £150–300 for a service call — and some repair companies decline to work on certain brands because parts are unavailable or the design makes access difficult.
Reliability data for specific brands is available from consumer reports and surveys (Which? in the UK, Consumer Reports in the US) and is more useful than any showroom assessment. The brands that consistently perform well in reliability surveys are not always the most expensive or the most aggressively marketed.

A few factors that correlate with reliability: fewer features is generally more reliable than more features. An ice dispenser, a screen on the door, a connected app, internal cameras — each of these is a component that can fail. A fridge that is fundamentally a well-insulated cold box with a reliable compressor has fewer failure points than one with integrated technology — unlike a smart thermostat, where the connected features usually justify the complexity.
Compressor type matters. Inverter compressors — which vary their speed continuously rather than switching on and off — are quieter, more energy-efficient, and generally longer-lasting than conventional fixed-speed compressors. Most mid-range and premium fridges now use inverter compressors; budget models may not. Check.
What the price premium buys
The difference between a £400 fridge and an £800 fridge in practical terms: usually more capacity, better energy efficiency, an inverter compressor, better internal organisation (adjustable shelves, better vegetable drawer design), quieter operation, and longer warranty. Factor in monthly grocery savings from better food storage and the premium shrinks further.
The difference is real but not always proportionate. A £600 fridge from a reliable brand with a good energy rating and an inverter compressor is likely a better ten-year purchase than an £800 fridge from a brand with a poorer reliability record, regardless of the features on paper.
Extended warranties from retailers are generally not worth buying — they're priced to be profitable for the retailer, not beneficial for the buyer. Redirect that money toward an emergency fund for genuine appliance failures instead.
The practical checklist
Before buying: measure space including swing radius and delivery route. Calculate the capacity you need. Set a minimum energy rating (B or above in the UK). Check reliability data for specific models you're considering. Compare the compressor type. Read the warranty terms. The showroom visit is for confirming the physical dimensions and checking shelving configuration — not for making the decision.
The decision that will still seem right in year twelve is usually not the one made based on what looked good with the door open in a shop. It's the one made on efficiency, reliability record, and the right capacity for how you actually live.