How to choose a smart TV for your home

Smart TVs are one of the biggest purchases during online sales, and the listings are full of impressive-sounding terms: "4K HDR", "Dolby Vision", "MEMC", "40W sound", "bezel-less". Some of these make a real difference; others appear on almost every TV regardless of quality. This guide explains how to choose the right size and which features are worth paying for.

The short answer

Pick the size from your viewing distance and room, choose 4K for 43 inches and above, and spend extra on panel quality and brightness rather than on long feature lists. Check the smart platform and its update record, and budget for installation and a soundbar if sound matters to you.

Size: start with your room

A common mistake is buying too small. As a rough guide for a 4K TV:

32 inches: bedrooms and small rooms, viewing from about 1.5 metres or less.
43 inches: smaller living rooms or bedrooms, around 1.5–2 metres away.
50–55 inches: most living rooms, around 2–2.5 metres away.
65 inches and above: large rooms, around 2.5 metres or more.

Measure the wall or stand space too — listings give the TV's width, and stands may be at the edges rather than the centre, so check the stand width against your furniture.

Resolution: HD, Full HD or 4K?

At 32 inches, HD or Full HD is common and fine for the screen size. From 43 inches up, 4K is now standard and worth having, since most streaming apps offer 4K content. Don't pay a premium for "8K" — there's very little 8K content to watch.

Panel type is where quality lives

LED (LCD) TVs are the most common. Quality varies widely; the best use local dimming, which darkens parts of the backlight for deeper blacks.
QLED TVs add a quantum-dot layer for richer colours and often higher brightness. "QLED" on a budget TV doesn't guarantee a big improvement — check reviews.
Mini-LED TVs use many small backlight zones for strong contrast and brightness, at a higher price.
OLED panels light each pixel individually, giving perfect blacks and excellent viewing angles. They're the most expensive and are best in dimmer rooms.

Viewing angle matters if people watch from the side of the room — reviews will tell you how much the picture fades off-centre.

HDR: the label isn't the experience

High Dynamic Range (HDR) makes highlights brighter and colours richer — but only if the TV is bright enough to show it. Many budget TVs accept HDR10 or even Dolby Vision signals but don't have the brightness to make HDR look much different. Look for a stated peak brightness, or reviews that measure it. Support for multiple formats (HDR10, HDR10+, Dolby Vision) is useful, but brightness and contrast decide what you actually see.

Refresh rate and gaming

Most TVs run at 60Hz, which is fine for TV, films and streaming. MEMC or "motion smoothing" is software that adds in-between frames; many people find it makes films look artificial and turn it off.

If you play on a PS5 or Xbox Series X, look for a true 120Hz panel with HDMI 2.1 ports, plus ALLM (auto low latency mode) and VRR (variable refresh rate). Be careful: some listings say "120Hz" when the panel is 60Hz with motion processing.

The smart platform

The TV's software decides how easy it is to use every day and how long apps keep working. Common platforms include Google TV / Android TV, Tizen (Samsung), webOS (LG) and Fire TV. Check that the apps you use are available, how responsive the interface is in reviews, and whether the brand has a good record of updates. A slow interface on a TV with too little memory gets more frustrating over time. A low-cost streaming stick can refresh an older TV later.

Sound: ignore the wattage

"40W" or "60W" speakers don't tell you much about sound quality. Thin TVs have limited room for speakers, and dialogue can be hard to hear. If sound matters, plan for a soundbar — and check the TV has HDMI ARC or eARC so one remote can control both.

Ports and connections

Count the HDMI ports you need (set-top box, console, soundbar, streaming stick) and check that at least one is ARC/eARC. USB ports, Wi-Fi (dual-band is better for streaming), and Bluetooth for headphones are also useful.

Installation, warranty and delivery

Installation: check whether wall mounting or a stand is included, and whether the brand's installation is free or charged. Wall-mount brackets are sometimes sold separately.
Warranty: standard warranties are often one year; some brands offer longer panel warranties. The panel is the most expensive part to replace, so an extended warranty can be worth considering on larger TVs.
Delivery: unbox in front of the delivery person or installer where possible, and check for screen damage before they leave.

Checklist before you buy

What size suits your viewing distance — and will it fit your wall or stand?
4K if it's 43 inches or bigger?
Which panel type, and what do reviews say about brightness and contrast?
Does the HDR actually look better, according to reviews?
True 120Hz and HDMI 2.1 if you game on a console?
Does the smart platform have your apps and a good update record?
HDMI ARC/eARC for a soundbar? Installation and panel warranty terms?