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Top tips for buying a new boiler

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Central heating and hot water are basic human needs and providing them is one of your key responsibilities as a landlord. Whether you’re doing up a new buy-to-let property, renovating your rental home between tenancies or responding to an emergency, boiler replacement is an expensive business that’s not to be taken lightly.

While it’s tempting to be frugal when kitting out a rental home, skimping on a cheap brand probably won’t pay off. Boiler repairs and maintenance contracts aren’t cheap and investing in a good quality boiler should always save you money in the long-term

Top tips on buying a new boiler


But what factors should influence your choice? We have five tips to help you get it right.

Tip 1 – Do your research

A boiler is a major expense, and a little research beforehand can pay off; helping you make the right choice for your property. With so many views and opinions at your fingertips, the internet makes shopping for any big-ticket item, whether TV, washing machine or gas boiler, a whole lot easier. Conduct plenty of research before you start, visiting review sites, reading customer comments and comparing prices. Get recommendations from friends and family too and heating engineers – but be careful as some receive incentives to promote certain products.

Tip 2 – Choose a reliable brand with a good guarantee

According to a survey by Which? the average cost of a boiler repair is £210. The same survey showed that in almost two thirds of cases, the most reliable boiler brands are still fault free after six and a half years of use.

The message is to stick to well-respected brands, such as Worcester Bosch, Vaillant, Glow-worm or Baxi. As well as being reliable, these brands usually offer good guarantees, which can save you hundreds of pounds over the years in maintenance contracts. Worcester Bosch, for example, offers some of the longest boiler guarantees available on the market. It’s important to note that you may need to have your boiler serviced annually by a Gas Safe engineer to ensure the guarantee is valid.

Tip 3 – Look at the maintenance deal

Once your new boiler is installed, ongoing maintenance is essential to you and your tenants. If your tenant reports a boiler breakdown, you’ll want an engineer to attend to the issue that day.

This is another reason to look for a lengthy guarantee period, but look too for a manufacturer that uses its own engineers, rather than contractors, for call-outs. Knowing you can call on a dedicated engineer is a real bonus in the event of an emergency.

Tip 4 – What boiler is best for your rental property?

The cost of your boiler will partly depend on its size and type. There are three main types of boiler:

  • A combination boiler or combi boiler, which heats water instantly with no need for a storage tank.
  • A conventional boiler with a separate tank to store your hot water.
  • A system boiler – similar to a conventional boiler, but with more built-in components, making it easier to install and more compact.

The advantage of a combi boiler is that you won’t run out of hot water. The downside is that you will lose pressure if more than one person uses hot water at once, making combi boilers less suitable in larger properties with more occupants.

You also need to consider what size of boiler – the number of people living at the property and the number of bathrooms and radiators need to be considered.

Your heating engineer will be able to talk you through the different types of boiler and make a recommendation for the best choice in your home.

Modern, energy-saving boilers are generally a lot more efficient than older boilers, so once the new boiler is installed, you can except to save on your energy bills.

Tip 5 – Hire a fully-qualified heating engineer to install it

It’s important to have any new boiler installed by a qualified, Gas Safe-registered heating engineer. If you need help finding one, ask around and check local forums for personal recommendations – your letting agent may have good suggestions too.


Fitting a new boiler is likely to cost between £3,000 and £5,000 and, while your budget will determine which boiler you choose, always shop around, get advice and go for the best boiler you can afford. Choose wisely, and it won’t let you down, ensuring your tenants are warm and cosy and you’re free from the worry of boiler breakdown.

If you’re a new buy-to-let landlord, Assetgrove’s maintenance packages save you time, money and stress. To find out more about renting property with us, get in touch today.

Neil Jennings

Neil is the Operations Director at Assetgrove Lettings, London's Leading Rent Guarantee Company, providing Landlords with no voids, property maintenance, fee-free property management and stress-free service.

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