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What is the Ideal Room Temperature?


Room temperature has a lot to do with the comfort of your home, not just for you but also for your guests. When you visit a friend, and the temperature is too low, you find it hard to say. If the thermostat is too hot, you would rather brave the discomfort than stand up to open a window.

You can save your guests and yourself the same ordeal by knowing the ideal temperature to set your thermostat for your home.

But, like with everything else about heating, the ideal temperature of your home depends on numerous factors that you should consider before settling on the ideal temperature.

What is the Minimum Room Temperature?

Even though selecting the ideal temperature for your house might not be straightforward, it’s quite easy to tell when the temperature is too low. For the UK, anything below 18 degrees is considered low.

If you’re aged under 65 years, you can set the temperature as low as 16 degrees if it makes you comfortable. For the elderly, the temperature is a little different. If you’re over 65 years or have an illness, the minimum temperature should not be below 18 degrees.

What Temperature is Too Cold for a House in the UK?

If your house has a temperature of 12 degrees Celsius or less, it’s considered too cold because the house will not be comfortable.

At such a temperature, you will struggle to get warm, and you will be restless. You will also struggle to sleep, which will leave you feeling tired in the morning.

At 12 degrees or below, your feet will feel ice-cold. For guests who might be accustomed to higher temperatures in their homes, these low temperatures could be even more punishing. You should aim to keep the temperature in your home at least 18 degrees Celsius.

How You Should Heat Different Rooms in the House

On average, the ideal temperature for your home is around 200C. This is for homes that have one temperature dial.

For maximum comfort, it’s best to tailor the temperature to different rooms. Here is a quick guide that should help you customise the temperature of your home, depending on the rooms.

What is the ideal temperature for the living room?

The living room is undoubtedly the most important room in your home. The ideal temperature here would be anywhere between 19 and 220C. Because you spend a lot of time here, the temperature needs to be perfect. You might want to keep the room toastier than the others. But keep in mind the higher you go, the more energy you will use. If possible, avoid going beyond 210C.

What is the ideal temperature for your bathroom?

Most homeowners don’t consider optimising the bathroom temperature until they step out of the shower into an icy, cold room. Because of the water temperature, the temperature in the bathroom needs to be higher than most of the other rooms in the house to remain comfortable.

The ideal temperature for your bathroom should be around 220C. Additionally, you should also ensure that the temperature is comfortable, particularly in the morning and evening when most people use the facility.

With the bathroom, the hot water will create humidity, adding warmth to the air, saving the boiler most of the work in maintaining the temperature.

What is the ideal temperature for your bedroom?

The temperature for your bedroom is a little different. You would think that you would need the bedroom to be the warmest for a good night’s sleep. But that’s not the case. In fact, your bedroom doesn’t need to be as warm as the other rooms. The ideal temperature for your bedroom shouldn’t be any higher than 200C, but you could set it as low as 15 or 160C.

Why should your bedroom temperature be lower?

Your body also has a built-in thermostat. When it senses time for sleep, it initiates the process by lowering your body temperature by a few degrees. This process is vital in guaranteeing quality rest. However, if the external temperatures are too high or too low, they can interfere with this process.

The temperature you set on your thermostat can directly interfere with your sleep pattern and your quality of life in general. This is why you should always ensure the temperature in your bedroom is lower to complement the biological process of the body lowering its temperature during sleep.

Ideal Room Temperature Depending on the Season

Besides matching the temperature conditions inside your home to the different rooms, you should also know that the ideal temperature will also differ depending on the season:


Some people like to keep their homes noticeably hot during winter, while others prefer to keep the house cool. The main difference is the energy bill that each home receives.

The average recommended room temperature that homes should have around winter is about 180C. Those are that are keen on saving energy should set the thermostat to the lowest comfortable temperature. However, you should always aim for 18 to 210C.

Determining the ideal temperatures for your home is not just about your comfort but also your health. Here are some of the effects different temperatures can have on your body and health:

  • 240C+ – Risk of heart attack and cardiovascular strokes
  • 21 – 240C – Increasing discomfort
  • 18 – 210C – Comfortable temperatures
  • 16 – 180C – Slight discomfort and minor health risks
  • 12 – 160C – Risk of respiratory complications and diseases
  • 9-120C – Risk of stroke and heart attack
  • <90C – Risk of hypothermia

From the above figures, it’s evident that selecting the ideal room temperature goes beyond comfort.


In summer, the challenge is about bringing the temperature down. Humidity plays a key factor in this case. Opening windows helps lower the moisture content in the air by creating a flow that also helps reduce temperature.

In most cases, you won’t even have to run your central heating during the summer months because the temperatures are usually higher. However, you will still need your thermostat to tell you when temperatures get too hot inside the house so you can open more windows.

How to Heat Your Home economically and Sustainably

Keeping your home warm and toasty during the winter months can drastically increase your energy bill. Heating makes up over half of the average heating bill for homes in the UK. It’s also worth noting that heating, mainly using gas, oil and biomass, impacts the climate as well.

For these reasons, you should try to find ways to heat your home while keeping your energy bills low and minimise your carbon footprint on the environment. Here are some tips that will guarantee comfort and while making your heating more efficient.

  • Invest in technology – You can install a smart thermostat on your boiler. The thermostat detects when the temperature in the room has gotten to the set temperature and turns off the boiler. If the temperature drops out of range, the thermostat will restore heating. It ensures the boiler is running only when it is supposed to, saving energy and money.
  • Keep the doors closed – keeping the doors closed reduces heat loss and maintains the ambient temperature longer. It also reduces the work the boiler has to do, so you save money and reduce carbon emissions.
  • Radiator valves – Radiator valves allow you to adjust the temperature of individual radiators and consequently the rooms that the radiators are located in. Rooms that are not occupied can have the radiators shut off to save energy. The valves also give you more control of the heating system.

When to Heat Your Home Throughout the Day

Most homes in the UK use a 2 bursts approach when heating their homes. There are also those that leave the boiler running all day without a break. As you would expect, the latter group is more likely to receive an enormous energy bill compared to those who run their heating at certain times of the day.

There’s no time you should leave the boiler running throughout. If you manage the heating in your home correctly, you can get enough heating in your home by firing the boiler twice a day.

How Many Hours Should Heating be On in Your Home?

According to a recent government study, the average time households run their central heating is 7.5 hours a day. Homes without central heating run the boiler almost double the same amount.

With central heating, it’s enough to run the heating for two bursts of 4 hours. If your home is adequately insulated, it should keep the house warm for long periods.

What if You’re not at home?

If you’re not at home, how long, or if you should even run the boiler depends on how long you will be away.

  • During the day, when you’re at work and the children are in school, the heating can rest.
  • If you’re taking a trip for several weeks, you can turn off the heating completely during summer. During winter, set the thermostat to 140C to avoid problems with dampness because of the temperatures dropping drastically.

Although the ideal room temperature is not set in stone, there are guidelines that should help you determine the best temperature for every room and every season in your home.

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