Making sure your latest boiler is safely fitted

Have your say

If you’ve taken the important first step and decided you want to replace an old, inefficient boiler in your home, what do you need to know about the second step - namely, putting the new boiler in.

Most important of all is to remember it’s against the law for anyone other than a Gas Safe Register heating engineer to fit or work on a gas boiler (for oil-fired boilers, it’s OFTEC –, so that’s the first thing to check. Visit to search for installers.

“In an ideal world, we would all have an installer we can call on when needed, but this is not always the case,” says Martyn Bridges, director of technical support at boiler manufacturer Worcester, Bosch Group. “Friends and family who have had a good experience can be a good starting point, but many manufacturers have created a database of installers across the country.

“Worcester has a Find an Installer section on its website – – as well as a free iPhone app. Both allow you to search by postcode for a reputable, Worcester-accredited installer in your area.”

You could also try an installation service provided by a trusted retailer, such as B&Q’s Homefit. With Homefit, there’s someone to organise the Gas Safe Register installer and sort any problems for you seven days a week. The installation comes with a 10-year manufacturer’s parts and labour warranty (terms and conditions apply), and you can spread the cost of the work (see

“A good installer will always notify you of the after-sales service, including warranties on appliances, materials and workmanship, as well as the arrangements to remedy any defective work or damage to the property,” says Bridges. “Make sure you ask your installer about these if it isn’t explained in the first instance.”

A Gas Safe Register installer can self-certify their work complies with building regulations and will issue a certificate as proof, which you’ll need when you sell your home. Boilers should be serviced annually by a Gas Safe Register heating engineer to ensure they’re safe and efficient.