5 Ways to Keep Your Kitchen Cool During a Heatwave as a 'Heat Dome' Pushes Temperatures Into the Triple Digits

As a heat dome pushes temperatures into the 90s and even triple digits across large parts of the U.S., keeping your kitchen cool can feel like an impossible task. As the heart of the home, it's one of the busiest rooms in the house, and everyday activities such as cooking, baking, and running appliances only add to the heat when outdoor temperatures are already sweltering.

Fortunately, cooling your kitchen doesn't always require cranking up the air conditioning or investing in expensive gadgets. Many of the same strategies experts recommend to keep a home cool during a heatwave also work in the kitchen, from rethinking when you cook to improving airflow and making a few smart layout tweaks.

The key is to stop heat from building up in the first place. By making a few small changes to how you cook, ventilate, and shade your kitchen, you can create a noticeably cooler space without sending your energy bills soaring. If you're relying on fans, knowing how to cool a room with fans properly – by creating cross-ventilation and directing warm air outside – can also make your kitchen feel much more comfortable.

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Below, HVAC experts and kitchen designers share their favorite ways to reduce excess heat, improve ventilation, and keep your kitchen feeling fresh throughout the hottest days of summer.

1. Be Strategic About How You Use Appliances

When temperatures soar, one of the easiest ways to keep your kitchen cooler is to rethink when – and how – you cook. Ovens, cooktops, grills, and deep fryers all emit a significant amount of heat, so it's worth saving them for the coolest parts of the day.

'Ovens, cooktops, grills, and deep fryers are the biggest sources of heat in any kitchen, especially during long cooking sessions,' says Eva Lorena, commercial kitchen consultant at Zanduco. 'During a heatwave, try using them early in the morning or later in the evening, and batch-cook where possible to avoid heating the room multiple times throughout the day.'

You can also reduce the amount of heat your kitchen generates by swapping your oven for smaller countertop appliances. 'Use a microwave, slow cooker, or air fryer instead of your oven whenever possible,' Eva says. 'They release far less heat into the room while still getting dinner on the table.'

It's not just cooking appliances that can warm up your kitchen, either. 'Many people forget that dishwashers produce heat, particularly during the drying cycle,' says Anees Jarral, CTO at Cielo Wigle. 'Running yours early in the morning or later in the evening can help keep the kitchen noticeably cooler.'

If you're planning to upgrade your appliances, opting for ENERGY STAR-certified models can help, too. 'They're designed to use less energy, which generally means producing less excess heat,' says Melanie Powers, president at Goodberlet Home Services. 'Refrigerators have improved insulation, while newer dishwashers use smarter technology to shorten cycles and reduce water consumption.'

Another simple way to prevent your kitchen from heating up is to switch off small appliances when you're not using them. Coffee makers, toasters, countertop ovens, and kettles are all among the appliances to unplug during a heatwave, as they can continue drawing power and generating small amounts of heat even when they're idle. If unplugging everything isn't practical, plug frequently used appliances into a timer or smart plug so they switch off automatically when you're finished. It's an easy way to cut standby energy use while helping keep your kitchen a little cooler.

Smart plugs and outlet timers make it easy to switch off countertop appliances when they're not in use. The BN-LINK 24-Hour Mechanical Outlet Timer is a simple plug-and-play option, while the GHome Smart Plug works with Alexa and Google Home from Amazon, letting you schedule appliances or turn them off remotely from your phone, helping reduce standby energy use and unnecessary heat during a heatwave.

Finally, avoid opening your oven door once you've finished cooking. Although it might seem like a quick way to cool the appliance down, it simply releases all that trapped heat into your kitchen. Leaving the door closed while the oven cools naturally will help keep the room more comfortable.

2. Use Your Windows Wisely

Opening your windows is one of the easiest ways to cool a kitchen, but it's important to get the timing right. Throw them open early in the morning or later in the evening, when the air outside is cooler than it is indoors, to flush out warm, stale air.

During a heat dome, keep windows and doors closed through the hottest part of the day, as opening them can let even more heat inside. If you're looking for practical window treatment ideas, a thermal covering such as the Blackout French Door Curtain from Amazon can help block solar heat from entering through glazed kitchen doors or windows while still giving you privacy.

Once temperatures begin to drop, create a cross breeze by opening windows on opposite sides of your home to encourage hot air to escape while drawing cooler air inside. If you're worried about summer pests sneaking in with the cooler air, fitting a mesh screen is a simple solution. I like the Mesh Screen with Magnetic Closure from Amazon, which lets fresh air circulate while helping keep mosquitoes and other flying insects outside.

3. Prioritize Good Ventilation

Good ventilation is one of the best ways to stop heat from building up while you cook. If you're looking for practical kitchen ventilation ideas, start by making the most of the extractor hood you already have. A range hood that vents outdoors removes heat, steam, and cooking odors before they have a chance to linger, so switch it on a few minutes before you start cooking rather than waiting until the kitchen fills with steam.

If your kitchen doesn't have an extractor hood, or it recirculates air instead of venting outside, adding an exhaust fan near the ceiling can help pull hot air out of the room. Where that's not possible, a ceiling fan set to rotate counterclockwise will improve airflow and create a cooling breeze, even if it doesn't actually lower the temperature.

To boost your ventilation even further, consider adding a powerful air circulator, such as the Vornado 660 Large Whole Room Air Circulator Fan from Amazon. Unlike a standard desk fan, it moves air throughout the room, helping push warm air toward open windows or your extractor fan for faster cooling.

Don't overlook maintenance. Grease and dust quickly build up on extractor filters and vents, reducing their efficiency just when you need them most. Cleaning them regularly will help your ventilation system perform at its best throughout the summer.

4. Improve Airflow With Your Layout

If you're searching for kitchen layout ideas, don't overlook airflow. The way your kitchen is arranged can have a surprising impact on how warm it feels, with open-concept layouts naturally allowing heat to disperse more easily than enclosed spaces. If you're planning a remodel, consider how your layout will affect ventilation as well as how you use the room day to day.

You don't need to renovate to make a difference, though. Repositioning a portable kitchen island, bar cart, or dining table can open up the room and improve airflow during a heatwave.

'Freestanding kitchen pieces can be moved and rearranged to suit your needs, creating a more relaxed, lived-in feel, although they won't offer quite as much storage as fitted cabinetry,' says Charlie Smallbone, founder of Ledbury Studio. 'For the best of both worlds, combine fitted and freestanding furniture. It gives you visual interest and the flexibility to move pieces around, whether you're trying to keep the room cooler in summer or cozier in winter.'

It's also worth keeping walkways clear and avoiding blocking air vents with stools, trash cans, or storage baskets so cool air can circulate freely.

Appliance placement matters, too. If possible, place ovens and cooktops near exterior walls or windows to help heat escape, while keeping refrigerators out of direct sunlight and leaving enough clearance around them for heat to dissipate efficiently. Avoid clustering large appliances together, as this can create pockets of trapped heat and make the room feel even warmer.

5. Use Shade and Light Colors to Your Advantage

Preventing heat from entering your kitchen in the first place is often easier than trying to cool it down later. Light-reflecting paint colors and cool color schemes can make a noticeable difference in summer, with white and other pale shades bouncing sunlight away and reducing heat absorption.

Window treatments also play a key role. Blinds, shades, and curtains help reduce solar heat gain, especially on windows that receive strong afternoon sun. Keeping them closed during the hottest part of the day can stop your kitchen from overheating, while external options such as shutters, awnings, or exterior shades can block heat before it reaches the glass.

Soft furnishings matter, too. Heavy curtains, dark textiles, and thick rugs tend to trap heat, while lighter natural fabrics like linen and cotton create a fresher, more breathable feel.

As interior expert Jane Rockett of Rockett St George explains, 'Colors on the cooler end of the spectrum – greens through to blues, sea blues, cobalt and soft lavenders – can also help a kitchen feel calmer and more refreshing in warm weather, while lighter shades can make the space feel more open and less oppressive during heatwaves.'

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How Can I Cool Down My Kitchen Fast?

If your kitchen is already feeling uncomfortably hot, start by switching on your range hood or exhaust fan to pull hot air outside, while opening windows only if the outdoor air is cooler than indoors.

Skip the oven and opt for no-cook meals, salads, or smaller appliances such as an air fryer, microwave, or slow cooker instead. Turning off unnecessary lights can also help, especially if you haven't switched to LED bulbs, which produce far less heat than traditional incandescent lighting.

If you have ceiling fans, set them to rotate counterclockwise to create a cooling breeze. A portable fan positioned near an open window can also help move hot air out of the room more effectively. One simple upgrade is the Dreo Tower Fan at Amazon, which offers strong, adjustable airflow and can help circulate air quickly when temperatures spike.

If you rely on air conditioning during a heat dome, keep windows and exterior doors closed while it's running to maximize efficiency and reduce energy costs. A simple way to improve cooling performance is to use a smart temperature control device such as the Google Nest Thermostat, which helps maintain consistent indoor temperatures without overworking your system.

Keeping your kitchen comfortable during a heatwave doesn't require an expensive renovation or running the air conditioning around the clock. Smarter cooking habits, effective ventilation, and strategic shading can all make a noticeable difference, helping you enjoy the space without dramatically increasing your utility bills.

One final tip from the experts: don’t default to leaving windows open all day. During a heat dome, it’s often more effective to keep blinds or shades drawn and windows closed through the hottest part of the afternoon to stop heat from building up indoors.

Then, once temperatures begin to fall in the evening, open windows on opposite sides of your home to create a cross breeze and quickly release trapped warm air. Getting the timing right with ventilation can make just as much difference as investing in cooling equipment.