Can Triple Glazed Windows Reduce Your Heating Bills?

Anglian White UPVC curved bay window double glazed internal view

Are you concerned about the prospect of rising energy bills? Gas prices have increased by record levels, and it is harder to find competitive deals due to many suppliers going out of business.

Unfortunately, it seems unlikely that energy prices will be dropping to previous levels anytime soon. This means more people are considering ways that they can reduce their energy usage without experiencing discomfort during the cold winter months.

One way you can reduce your energy usage is to invest in insulating your home to the highest standards. Find out whether triple glazing can lead to lower heating bills, and if it’s worth the investment.

Is Triple Glazing Better Than Double Glazing?

Triple glazed windows consist of three panes of glass, with two gaps between them which are filled with either air or inert gas. This makes them more insulating than double glazed windows, which only have one gap.

With the energy price cap rising by 54%, anything that can increase your home’s insulation and potentially reduce your energy costs may sound like an appealing option. However, the impact of triple glazing will vary depending on the energy efficiency of your current windows.

How effectively a window stops heat escaping is expressed as a U-value. The higher the U-value, the more heat is lost through the window. The table below compares the heat lost through different types of glazing units:


Window TypeU-Value (w/m2K)
Single Glazing5 – 5.6
Double Glazing2.6 – 2.8
Double Glazing With Low Emissivity Glass1.5 – 1.8
Triple Glazing0.7 – 1.6


As you can see, both double and triple glazing retain heat better than single glazed windows. However, the difference that triple glazing will make depends on the glass that you have in your current double glazed units.

If you are considering replacing your windows, why not compare quotes for both double glazing with low emissivity glass and triple glazing? This will help you to decide which option will work best for your home and your budget.

How Do Triple Glazed Windows Reduce Your Heating Bills?

Around 18% of the heat in a house can escape through the windows. Therefore, having windows that provide better insulation will keep more heat in your home. This means that your heating system won’t need to work as hard to maintain a steady temperate and you’ll use less energy.

The layers of air or inert glass trapped between the panes of glass in double and triple glazed windows help to stop heat from leaving the room. If you are losing heat through your windows and doors, your heating system will need to work much harder to keep your home at a comfortable temperature.

Triple glazing can provide an average saving of 15%, allowing you to reduce heating bills while still enjoying a warm home. If you are looking for ways to save money on energy without wearing extra layers or adjusting to a cooler room temperature, why not request a free quote to see how much upgrading your windows will cost.

What Are The Other Benefits Of Triple Glazing?

Thicker windows don’t just reduce heat loss. They can also help to reduce noise from outside. The thickness of the glass and the amount of space between the panes will influence how effectively your windows keep noise out, so this is something to consider if you want to enjoy a quieter home.

Triple glazing also helps to reduce the amount of condensation that builds up on your windows. This is because the third pane of glass adds an extra layer of protection against the cold air outside. Condensation is associated with the development of damp and mould, which can have a detrimental impact on both you and your property.

Triple glazed units can be a great way to add value to your home. Triple glazing improves the energy efficiency of your property, which means your energy performance certificate (EPC) rating will be higher. There is a correlation between a stronger EPC rating and a higher property price.

While triple glazing is attractive to potential buyers, it is likely to have the opposite effect on burglars. Three panes of glass are harder to break through than one or two and the force needed to shatter it will cause a great deal of noise and commotion. This will make your house an unappealing target and provide you with additional peace of mind.

Is My Home Suitable?

Triple glazing is suitable for a wide range of homes. Installing it will make more of a difference if your house is detached compared to other property types due to the increased number of windows and lack of a party wall.

As with any home improvements, if you own a listed building, live in a conservation area, or have an article 4 direction on your property you will need to check with the relevant authorities before proceeding. It may be that any replacement windows and doors will need to look the same as your current ones, or there may be more restrictive guidance in place.

Whether your home currently has timber windows, sash windows, or casement windows, there will be triple glazed options available that won’t alter the appearance of your house. If you have limited options in terms of window upgrades, thick curtains can help to reduce draughts and retain more heat.

How Much Do Triple Glazed Windows Cost?

The cost of having triple glazing fitted will depend on how many windows you have and the window type, with uPVC typically being the cheapest option. Getting free quotes that have been tailored to your property is easy using this simple form.

Both triple glazing and high-quality double glazed windows can improve thermal efficiency and save money on your energy bills. If you aren’t sure which option is best for you, why not get quotes for both to help you decide?

CompareCompanies makes it easy to compare free, no obligation quotes for home improvements. We help up to 6,000 homeowners per week compare prices and find the best provider to suit their needs.

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How do I choose a uPVC window? Plus, the most well-known manufacturers and suppliers!

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