August 23


Why Is My Bedroom So Cold? How To Fix

By Robin Hatch

August 23, 2020

There are several plausible reasons why your room could be too cold for your liking. Even if you spend most of your time in your bedroom, the low indoor temperatures can make you feel ill during the cold months. It is not always comfortable to be cold while sleeping.

So why is your bedroom always so cold?

The walls in a bedroom are thinner than the rest of your house. Improper installation of ductwork could be another reason. Dirty air vents should also be checked since they could be causing your of a cold bedroom.

What other reasons could be the root of your problem, and how to fix them? We’ll tell you what you can do on your own and when to call in a professional. Don’t worry too much – most of these issues are easily fixed!

Why Some Rooms Are Colder Than Others

Let’s start with the basic possibility. Pay attention to which cardinal directions your rooms face. If your bedroom gets extremely warm around noon and gets colder at night, your walls are probably thin enough to notice the external influences.

To alleviate the influence of outside temperatures, you should keep your windows closed during sweltering days and freezing nights. Invest in air conditioning if you can, and it should be beneficial.

However, ductwork can be improperly installed, which is a problem. Ducts or conduits are used in heating and ventilation. If they are not done correctly, your air conditioning device can be working, but it won’t be beneficial.

Cold House in winter

If you want to replace or install your ductwork, you should consult with an expert since ductwork is related to your other cold rooms, making your DIY job very difficult. 

The amount of money you need to save to get ductwork replaced goes from $300 to $550, depending on how much work needs to be done to fix the problem.

Sometimes your filter on the air conditioner device can get dirty or smelly. You will need to clean the filter from dust. If you don’t, your device may stop working correctly, and you will have to pay a lot more to get it fixed, and cleaned, or buy a new one.

Why Bedrooms Get Cold When The Heat Is On

Dirty filters or old cooling devices can cause your room to get too cold or too warm even when they are on. If you are unsure if this is your problem, try to see how strong the airflow is when the device is working at the maximum. 

Make sure you clean the filters every few weeks if your device is older than five years. You can do it more often; it will not harm you. 

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Ductwork needs to be insulated, and if there are not enough or too many vents, your room will stay cold even when the heat is on. 

If your house is old and you haven’t replaced the walls or vents, this could also be causing this issue. Old homes have thicker walls and rarely have weatherproof wall coating. The exterior could have been ignored for a long time, so your heater needs to work twice as hard to maintain an average temperature inside.

Inspect the heating vents and thermostat readings. Blocking or covering vents with large furniture like couches or beds lets the heat you pay for be absorbed into upholstery, leaving the room cold. So pay attention to that as well.

Why Your Bedroom Is Cold

How many times has this scenario happened to you in your own home: you want to lean against a wall, and you feel like you are leaning against an ice cube? Your walls are so cold you can feel them through your sweater.

Or maybe you accidentally brushed against a wall or stopped yourself from falling over legos in your kid’s room and got shocked by the cold wall? Perhaps you even got used to it and didn’t mind it anymore. We are here to tell you you shouldn’t settle for this – it is not as normal as you initially thought.

Insufficient insulation is the villain in this story. If your walls are not adequately insulated, the heat in your home quickly disperses and gets out instead of staying in your room. They should be insulated so that the walls protect you from outside temperatures and keep your heat trapped inside your home.

A slightly chilly wall that doesn’t affect you is unlikely to be a big problem. It will ultimately affect your energy bill in the long term.

Around 30% of the heat you paid for isn’t doing its job. Instead, it gets out. If you have damp or cold walls to the touch and want to make them warmer, the easy answer is to insulate.

Freezing cold

However, if insulation is not a possibility or is not quite doing the job, ensure proper ventilation because it can help remove the moisture from a room and keep the walls dry. The last thing you want is unnecessary moisture and mold on your walls.

It is pretty simple. You will need to get information from a previous owner or contact a professional and look at the ventilation, ductwork, and outside of the walls. 

If a cold bedroom is a new problem that appeared seemingly out of nowhere, it is probably due to ventilation failing or your air conditioner being too old or in a rough state. Think about how long you have had these issues and if something else has changed in your home.

If you have had some work done around your walls, your vents could be damaged or your ductwork leaky. Contact the person responsible for your projects and ask about the possibilities if this is the case. 

They should give you some information and at least check if something went wrong – maybe even fix it for free if it was their fault. There is another temporary solution. You can accomplish this by buying some mastic sealant or HVAC tape yourself and attempting to patch the holes.

Considering the time and the amount of work that goes into fixing or replacing ductwork, you may decide on this option if the situation is not critical and requires a quick fix.

How To Make Your Bedroom Warmer

There are several ways you can make your bedroom warmer. Here is a short list of the things you can do to make yourself as comfortable (and warm) as possible without much effort.

Check for drafts. Light a candle or some incense to check if your windows or doors have any leaks. Weatherstrip is a great solution when it comes to drafts and leaks. 

Invest in warm bedding. There are specific materials for sheets and pillowcases that will keep you warmer. Merino wool is one of the best materials for such rooms. Wool keeps its heat. 

The more body heat you produce, the more heat will be provided to you. Even if you are using wool during hot summer days, it will not make you too warm – it will create a barrier to protect your body from heat and stay at an average temperature, unlike other blankets. This is also the case if you have a mini fridge in your bedroom.

Move your bed away from the window. You may have noticed the walls are colder around the window. It may have some leaks, and when you open it, the cold air will swallow your bed, making it seem like an ice cave.

Is It Good To Sleep In A Cold Bedroom?

It is healthy to sleep in a cold room. But this doesn’t mean you should be freezing. The more frigid space, the more sleepy you will be.

Read more about the benefits of sleeping in a cold room. First of all, it is easier to throw on another blanket than trying to sleep during summer and being too hot. 

What you might not have considered is that it’s beneficial to keep our bedrooms cold year-round. Cold spaces help with your sleep and boost your metabolism. It is also said that the human brain works best when the body is a bit chilly.


If you are working from home or studying, it is beneficial to have a cold bedroom. You will fall asleep much more quicker. Not only that, sleeping in a cold room helps postpone the aging process.

It decreases the risk of diseases, helps people suffering from diabetes, helps your body produce more melanin, and helps with insomnia.

People with hyperthyroidism often can’t handle being in warm spaces and can get sick from just being hot. Cold rooms don’t make you sick, but excess moisture or mold sometimes occurs in cold rooms. So make sure you figure out the reasons for your cold bedroom.

We’ve compiled a complete list of frequently asked bedroom questions for new and experienced homeowners.

Our team of experts answers these questions to help assist you through DIY projects and home repairs.

Robin Hatch

About the author

For over a decade, Robin has been a real estate agent, interior design specialist, and mother. Through her trials and tribulations, she wanted to create the perfect website to help you save money and make your home look beautiful.

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