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UK · updated for 2026’s heatwaves

The smarter way to cool — and heat — your home.

Straight, honest advice on which air conditioner to buy in the UK, what it costs to run, and whether one unit can handle winter too. No fluff, no fake urgency — just what actually works in a British home.

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The guides most people need first. For everything else, see the full index.

Decision Guide

Air Conditioner vs. Fan: Which Do You Actually Need?

The first question to answer, before anything else on this site.

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Buying Guide

Best Portable Air Conditioners UK

Sized by room, ranked by noise and running cost, with in-stock alternatives.

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No AC Needed

How to Cool a Room With No Air Conditioner At All

Curtains, draughts, fans and timing — the complete passive-cooling method.

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Year-Round

Air Con That Heats Too: Heat Pump Guide

The units that genuinely warm a room in winter, and how that’s different from a grant-eligible heat pump.

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Plan Ahead

Heatwave Preparedness Checklist: Summer 2027

Every guide on this site, pulled into one room-by-room checklist.

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Before You Buy

10-Point Buying Checklist

The 30-second checks that prevent most post-purchase regrets.

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See every guide, organised by topic →

You might have missed

A random pick from across the whole site — refreshes every visit.

Worth a look

Best Dehumidifiers for a Damp UK Home

A dehumidifier tackles condensation damp — not rising or penetrating damp. Condensation damp comes from excess moisture in…

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Worth a look

Best Blackout & Thermal Curtains for a Cooler Bedroom UK

For a bedroom, thermal blackout curtains do two useful jobs at once: they're the most effective internal shading…

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Worth a look

Can You Leave a Portable Air Conditioner Running Overnight?

Yes — modern portable air conditioners are designed to run unattended, including overnight, and doing so is normal.…

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Worth a look

Can You Use a Portable Air Conditioner as a Heater in Winter?

Only if it's a reverse-cycle (heat pump) model — and most portable air conditioners are not. A cooling-only…

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Ready to buy?

Compare current prices, stock and reviews on portable air conditioners at Amazon UK. Prices move fast during a heatwave, so it’s worth checking before you commit.

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What other readers are checking out most right now.

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