Free home insulation

5 minutes now could improve your energy efficiency for the next 40 years.

Could you qualify for free home insulation?

Simply answer a few questions about your home and find out.

Check my eligibility

How well insulated is your home? You might think it's pretty toasty, but with as many as 25 million UK properties not expected to meet government standards by mid-century, it might not be as well-insulated as you think.

Making sure your loft and cavity walls are well insulated is a big step to a warmer, more energy-efficient home, and could help save money on your energy bills too. How? Well, most heat is lost through your roof and walls, so without proper insulation, it's escaping as soon as you turn the heating on. Cavity wall insulation and loft insulation are amongst the most effective ways to reduce this heat loss from your home.

Under the Energy Companies Obligation (ECO) scheme, we’re offering free home insulation to those who are eligible – and you don’t even need to be an npower customer The improvements made to your home can add up these sorts of savings on your energy bill:

Measure Annual saving per year (£) C02 saving per year
Cavity wall insulation £135 550kg
Loft insulation £175 720kg

Source: Energy Saving Trust, 2012. These are estimated figures based on insulating a gas-heated home. Figures are based on fuel prices as of March 2016.

Insulation being fitted


You may qualify for free insulation
To find out if you qualify for free loft insulation, free cavity wall insulation and other energy saving home improvements, use our online eligibility checker or call us on 0800 072 1741 or 0330 100 8123 if you’d prefer to speak to one of our experts.

Free cavity wall insulation
Free loft insulation

Why is home insulation so important?
Correctly insulating your home is one of the best ways to make sure your home is warm in the winter and cooler in the summer months - it can also save you up to 40% on your heating bills. The effect of having a home with poor insulation is like going out on the coldest day of the year without a hat or a coat on.

Unfortunately, across the country there are a lot of homes with very poor insulation and as result, they have higher energy bills and a lower energy efficiency rating than they could have.

Over the last few years, the people of Great Britain have made big improvements to the energy efficiency of their homes through buying energy efficient household appliances, but what many people don’t realise is that one of the best improvements you can make is to install cavity wall and loft insulation - and if you’re eligible it can be done for free.

Lady sitting on sofa


FAQ's open/close

How much money can you save from insulating your home?

According to the Energy Saving Trust, having your cavity walls and loft insulated properly could save you up to £515 a year, depending on your energy prices as well as your energy consumption.

Where and how does heat actually leave my home?

Most heat loss in your home occurs through walls or the roof, but it’s also lost through windows, gaps around the door and through the floor.

How does home insulation work?

Home insulation material has been designed to slow heat flow. In simpler terms, the material has been designed so that heat cannot easily pass through it and escape.

Are home insulation grants available?

You may qualify for a free grant for home insulation under the government’s ECO scheme. The ECO scheme has been set up to for the larger energy suppliers to help improve the energy efficiency ratings of homes across Great Britain.

Simply complete the following online eligibility checker or call us on 0800 072 1741 or 0330 100 8123 to find out if you’re eligible today.

I have a new boiler - why do I need home insulation as well?

One of the biggest energy problems we have in Great Britain is we don’t understand energy efficiency enough. To ensure our homes are performing to their maximum energy efficient potential and to make sure our energy bills are as low as they can be, all major improvements that can help the energy efficiency of a home need to be made.

This means if you have a well performing, high energy efficient boiler but have poor wall and/or loft insulation, you will not achieve the property’s energy efficiency potential. So you should make sure all improvements are made to feel the full benefits.

Is home insulation really important?

Yes. The government have said that more than one home every minute will need to refurbished between now and 2050 to meet the required insulation standards.

Currently a third of all emissions come from heating draughty homes, which is why home insulation is so desperately needed to help fix this problem. It’ll also help the UK hit their carbon reduction target of 80%.

Read more on the importance of insulation;
BBC - UK 'must insulate 25 million homes'
Energy Saving Trust - Explore how you can insulate your home
MSE - Free insulation and boilers

Also in this section

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Cavity wall insulation

See the latest REGO information from Ofgem.

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Loft insulation

See the latest REGO information from Ofgem.