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How to keep a house warm in winter for less

Trying to keep your home warm in the colder months can send energy bills soaring. Here’s what you can do to use less energy while keeping your home cosy. Read on for our budget-friendly top tips of how to keep a house warm in winter.


15 ways of how to keep a house warm in winter

There’s a wide range of things you can do now to help keep your home warm in the winter months while keeping energy bills down too. Here’s how to do it.


1. Insulate your home

One of the most effective ways to keep your house warm in winter is to insulate your home. The best place to start is usually the loft as a quarter of a house’s heat is typically lost through the roof if it’s uninsulated. Loft insulation most commonly involves using blanket rolls of insulation laid on the loft floor.

The average cost of installing loft insulation in a semi-detached house is £950 and it can save an average of £200 a year on energy bills, according to Energy Saving Trust. Or, if you are a keen DIYer, you could cut the costs further by insulating your loft space yourself. There are lots of online guides, such as this one from B&Q, on how to do this safely and helping you work out the right amount of loft insulation you need to buy.

You may also be able to get financial support towards the cost of loft insulation (and other energy-efficiency measures) or even get it for free if you’re eligible. Find out more in our guide Energy grants in 2024 and how to get them. And make sure any type of insulation is suitable for your home. Find more in our guide How to make your home more energy efficient

A word of warning: You may have heard of spray foam roof insulation, but we are warning homeowners not to install this product for the time being as many homeowners have had problems remortgaging and selling their homes on. You can read more in our guide on spray foam here


2. Draught-proof your windows and doors

When you’re trying to keep your house warm, the last thing you’ll want is for heat to escape and for cold air to get in. So a simple way to keep a house warm in winter is to check around your doors and windows for draughts and if you feel cold air seeping in, then install draught-proofing measures to fix the problem.

For example, if there’s a gap between a window and the frame you can fill it with self-adhesive foam strips, which are easy to install. While with your external front door, fitting a letterbox flap or brush and a keyhole cover may stop more draughts getting in.  

Costs vary depending on whether you do it yourself or get a professional in. Draught-proofing around your windows and doors could save you around £35 a year on energy bills as well as making your home more cosy.


3. Don’t overpay for energy

You may be able to save on the cost of keeping your house warm by making sure you’re on the cheapest energy deal. Fixed energy deals are returning to the market, so check if you can save.


4. Bleed your radiators

If your radiators have cold spots or don’t fully heat up, it could mean they need bleeding in order for them to work more efficiently. But if your radiators still aren’t heating up properly after bleeding them, it’s a good idea to call in an expert.


5.  Reflect heat back into your rooms

Once you’ve made sure your radiators are working properly, the next step in how to keep a house warm in winter is to install radiator reflector panels behind radiators on external walls. These reflect heat back into the room. In fact, installing reflective radiator panels in a house with uninsulated solid walls could save you up to £20 a year on bills, according to Energy Saving Trust. You can buy a roll of radiator heat reflector foil from around £7 from DIY stores and, from personal experience, they’re super easy to install.


6. Don’t block your radiators with furniture

If you have large pieces of furniture like a sofa pushed up against or very close to a radiator it can reduce how effective your radiator will be in heating the room. So make sure there’s enough of a gap between your furniture and your radiators so that the heat can flow around the room properly. The recommended gap between a sofa and a radiator is 30 cm to ensure proper heat distribution and airflow.


7. Get your boiler serviced

Making sure your boiler has an annual service helps to ensure that it is running as efficiently and safely as possible. Also, regular servicing can extend the life of your boiler too. So book yours in now, preferably before it gets too cold and local engineers are all booked up.

You can find a qualified local boiler engineer today with our partners at the Federation of Master Builders.


8. Insulate your pipes and hot water tank

When you’re heating water, make sure it stays hotter for longer by insulating your hot water tank. Hot water cylinder jackets cost around £20 to buy but could save the average semi-detached household £165 a year on energy bills if fitted on an uninsulated water tank, according to Energy Saving Trust. Even if you do have insulation, check it’s enough. Topping up hot water tank insulation from 25mm to 80mm could save around £35 a year on bills. Be sure to insulate your hot water pipes too. Foam pipe jackets cost around £18 to install and you could save around £5 a year on bills. Plus they’re very easy to fit.


9. Reduce your boiler flow temperature

Another way to keep a house warm in winter while cutting costs is to see if you can turn down your boiler’s flow temperature. This is the temperature of the water it sends to your radiators.  If you have a combi boiler you could try reducing the flow temperature to 60C.


10. Upgrade to a smart thermostat

When you’re looking at how to keep a house warm in winter, consider getting a smart thermostat installed. These connect your heating system to the internet, which means you can control the temperature from devices like mobile phones. Smart thermostats can help cut energy bills because you can control your heating remotely, so that you only use the energy you need, when you are in.

Some of the most popular smart thermostats include:

Google’s Nest Learning Thermostat (£219+ installation): This monitors your habits in order to create a personalised heating schedule. Other features include having a sensor that detects when your home is empty and doesn’t need to be heated. As you’d expect, you can use this smart meter to control your heating via your smartphone, tablet or computer.

British Gas’s Hive Thermostat (£119+ installation): This offers smart controls and lets you set a heating schedule from your phone, tablet or computer, plus it can track your heating history so you can monitor your usage. Other features include giving you alerts if you’ve gone out and left the heating on. It can also automatically turn your heating on if your pipes are at risk of freezing due to cold temperatures.

Tado V3+ Wireless Heating & Hot Water Smart Thermostat Starter Kit White (£85 plus installation): This can track everyone in the house who has a smartphone and adjust the temperature as you leave or arrive home. Plus, it can detect if you’ve left a window open and you can control each radiator if you invest in the Tado Smart Radiator Valves. Other features include it being able to check morning weather reports and tweak the heating schedule to keep you comfortable.


11. Find your lowest comfortable temperature

Staying warm in your house while keeping a lid on energy bills is about finding the lowest temperature you’re comfortable at. Try setting your thermostat 1 degree lower to see if you still find the temperature comfortable – each degree you turn your thermostat down by can save around 10% on energy bills.

You may find this temperature is between 18°C and 21°C.


12. Hang heavyweight curtains

Hanging heavyweight curtains can be a very effective way of keeping a house warm in winter, especially if they’re thermal. They can also help block draughts and act to block out light too. Thermal curtains can also help keep your house cool in the summer.

Thermal curtains are widely available, such as these Luna Brushed Blackout Pencil Pleat Curtains from Dunelm, from £40-£100. While M&S offers a range of ‘Temperature Smart Curtains’ designed to keep your home warm, including these Velvet Pencil Pleat Curtains, £59-£139. If you don’t want to buy new curtains, you may consider adding thermal lining to existing curtains.

You’ll keep even more warmth in your home if you pair heavy curtains with plantation shutters or fit with blinds. You can even get thermal blinds now for added protection around windows.

Make sure you close your blinds and curtains in your home as soon as it gets dark in order to keep as much warmth in as possible.


13. Staying warm underfoot

If you’re replacing flooring in a room, bear in mind that carpet can help keep your home warmer than luxury vinyl tiles (LVT) and hard wood. This is because carpets are made from fibrous materials that act as insulation. Getting the right underlay fitted under your carpet can help keep your rooms warmer too.

If you have hard floors, an easy and relatively cheap way of keeping your house warm in winter is to lay some rugs down. Ideally, opt for wool rugs as wool is a natural insulator.


14. Fill any floorboard gaps

If you prefer stripped floorboards, make sure that any small gaps in between the boards are filled in to stop draughts getting in through the gaps. You can buy a number of products to help you with this, such as Draughtex Floorboard Gap Filler, available at Amazon. You push it between the boards to seal any gaps and it’s available in a number of different widths.

If you find gaps between your floors and skirting boards, you can seal the gap yourself with a tube of sealant bought at DIY stores, making it one of the cheap ways to keep a house warm.


15. Insulate your chimney

If you have an open fireplace, getting a chimney draught excluder to prevent warm air going up as well as stopping cold air getting in when you’re not using it could save you money. You can get different types, from chimney balloons to these wool chimney draught excluders from Chimney Sheep. But don’t forget to remove the draught excluder when you light a fire!


Article from Home Owners Alliance by Rebecca Gamble

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