They’re perfect for time-poor cooks, but which deserves your counter space? From combi models to smart designs, here’s what our expert recommends

• The best air fryers

If you’re at a restaurant and hear a ping a couple of minutes before your meal arrives at your table, it’s unlikely to be a good sign. But microwave ovens are a brilliant tool in the home kitchen. They’re fearsomely fast at heating up – or even cooking – food when you’re time-poor and lacking the energy to make something wholesome after a hard day at work. And in hot weather, cooking by microwave isn’t just quick: it also won’t warm your home.

Microwaves work best for heating food with a high water content (they make the water molecules in food vibrate to create heat). However, before testing, I asked around to find out what people use theirs for most, with a view to using this information to shape my tests. I learned a few things – like lots of people eat mug cakes. Who knew? And that wheat bags are a popular alternative to hot-water bottles. But the majority of folk use their microwave for reheating cold cuppas, defrosting frozen batch-cooked meals, warming food, popping microwave popcorn – and, of course, cooking jacket potatoes more quickly. I used these insights to shape my testing.

Missed out on a fan this summer? Chill your space with our pick of the best still in stock, including tower and misting models

• The best portable neck and handheld fans
• Dyson HushJet Mini Cool fan review

Our world is getting hotter. Summer heatwaves are so frequent, they’re stretching the bounds of what we think of as summer. Hot-and-bothered home working and sweaty, sleepless nights are now alarmingly common.

Get a good fan and you can dodge the temptation of air conditioning. Aircon is incredibly effective, but it uses a lot of electricity … and burning fossil fuels is how we got into this mess in the first place. Save money and carbon by opting for a great fan instead.