When we get a proper heatwave in the UK, most homes simply are not built for it. Loft insulation keeps the warmth in during winter, smaller windows limit draughts and upstairs bedrooms end up trapping heat all day. By 9pm the house might have cooled downstairs but your bedroom still feels stuffy and uncomfortable.
I speak to plenty of customers each summer who say the same thing: “We can handle the heat in the day, but we just can’t sleep at night.” That is usually when the conversation turns to practical changes and, in some cases, energy-efficient air conditioning solutions for longer term comfort.
Before you jump to installing anything, there are some simple steps that can make a noticeable difference. Here are seven practical ways to keep your bedroom cool, starting with the low cost options and working upwards.
7 Practical Ways to Keep Your Bedroom Cool
1. Block the Sun Before It Gets In
A lot of overheating happens during the day rather than at night. South-facing bedrooms in places like Lincoln and North Hykeham can take full sun from mid-morning through to early evening. Once that heat is in the room, it lingers.
Keep curtains or blinds closed during the hottest part of the day. Blackout blinds or thermal-lined curtains help more than thin fabric. If you are out at work, close them before you leave. It feels odd shutting the house up on a sunny day but it genuinely works.
2. Create a Night-Time Cross Breeze
As soon as the outside temperature drops in the evening, open windows on opposite sides of the house if you can. Even slightly opening a bedroom window and one downstairs at the front or back can pull cooler air through.
I often suggest fitting basic window restrictors so you can leave them open safely overnight. It is a small change but it makes a difference, especially in terraced streets where airflow can be limited.
3. Switch Off Heat Sources
Bedrooms often have more heat sources than people realise. Chargers, TVs on standby, lamps with older bulbs and even loft hatches that are not sealed well can add warmth.
- Switch electronics off at the wall before bed
- Swap halogen bulbs for LED
- Avoid running a tumble dryer in the evening if it is near bedrooms
It sounds basic but every bit of reduced background heat helps when the room is already warm.
4. Use Fans Properly
A fan does not cool the air. It moves it. But used well, it can make you feel far more comfortable.
Position a fan near a window at night to draw cooler air in. During the day, keep windows and curtains closed and let the fan circulate air inside the room rather than pulling hot air in from outdoors.
For a small boost, place a bowl of cold water in front of the fan. It is not air conditioning but it can take the edge off.
5. Upgrade Bedding and Mattresses
This is one that catches people out. Memory foam mattresses can hold heat. Synthetic duvets do the same.
In hot weather, switch to cotton sheets and a lightweight summer duvet or even just a top sheet. Breathable natural materials help your body regulate its temperature more easily.
I have had customers in Washingborough tell me that simply changing bedding made more difference than they expected.
6. Improve Loft and Roof Ventilation
If your bedroom is directly under the roof, loft heat can radiate down into the room well into the evening. Good insulation matters in winter but ventilation matters in summer.
Check that loft vents are not blocked and insulation is laid correctly rather than stuffed into the eaves. In some cases adding additional ventilation can reduce heat build-up above the ceiling.
7. Install Air Conditioning for Consistent Results
If you have tried the above and still dread going to bed during warm spells, air conditioning becomes a sensible option rather than a luxury.
Modern systems are quiet, discreet and much more efficient than people expect. A single wall-mounted unit in a bedroom can keep the temperature steady and also filter the air. Many of the units I fit now include a heat pump function so they can provide warmth in winter too.
For homeowners in Lincoln, North Hykeham and Washingborough, this has become increasingly popular over the last few years, especially in newer builds where windows do not always allow much airflow.
When to Consider Installing Air Conditioning for Reliable Comfort
The key question I ask customers is simple: is the overheating occasional or every single summer?
If your bedroom only feels uncomfortable for a few nights a year, fans and shading might be enough. But if you are lying awake for weeks at a time, moving from one side of the bed to the other trying to find a cool patch, it is worth looking at a permanent fix.
Air conditioning gives you control. You set the temperature and it maintains it. No guessing whether tonight will cool down. No noise from multiple fans. Just steady, predictable comfort.
I also get asked about running costs. Modern inverter units are designed to ramp up and down rather than constantly switching on and off. In a well insulated bedroom they often use less electricity than people expect, especially compared to running several fans all night.
Installation is usually straightforward. In most properties the indoor unit sits high on a wall and the outdoor unit can be positioned discreetly at ground level. A typical bedroom install is often completed within a day.
Choosing the Best Cooling Solution for Your Home
Every property is different. A Victorian terrace in Lincoln behaves differently to a newer estate house in North Hykeham. Top floor flats can be the warmest of all.
Start with the basics. Block sunlight. Improve airflow. Reduce internal heat. You might find that is enough.
If you want reliable, no-fuss comfort year after year, then a properly specified air conditioning system is hard to beat. Fitted correctly, it should be quiet, efficient and unobtrusive.
If you are unsure what would suit your home, get in touch with Matt Harland for straightforward advice. You can get in touch here for expert advice or a free quote on bedroom air conditioning and have a chat about what would genuinely make your summer nights more comfortable.