Updated on: June 2, 2025

Infographic for blog: which boiler should I install

Best Type of Boiler to Buy for Your Home

When the time comes to buy a new boiler for your home, you may wonder what the best type of boiler is. Before asking a heating engineer to point you in the right direction, we encourage you to do some research first. In some cases, a replacement is better. Sometimes, however, you will need to completely upgrade your system. For example, if you currently have a back boiler, it is time to install a more efficient combi boiler.

What Is the Best Type of Boiler?

Whilst there is no one answer to the question of what the best boiler is, we have answered the question based on several common circumstances. Please note, it is always best to receive a plumber’s advice when choosing the best type of boiler as they have years of experience and can personalise your support.

I Have a Back Boiler and Heat Water Using a Tank. I Shower Using an Electric System and Bathe a Couple Times a Week…

If this example sounds close to your circumstances, you should install a combi boiler. A combi boiler is both connected to the mains gas and is also linked to the main incoming water. Whereas alternative boilers require a hot water cylinder (for example, a system boiler), a combi boiler does not as the water heating system is inside the boiler.

Combi boilers are proven to be cost-effective and have the bonus of being compact, so they can easily fit inside a cupboard. In some cases, they can be installed inside a garage to maximise space. Furthermore, you don’t require a tank in the loft once the traditional vented cylinder is removed so you increase the amount of storage space your home has.

I Have a Combi Boiler, but Don’t Get Enough Hot Water to Bathe Everyone at Home…

If you currently have a combi boiler and find that you don’t get enough hot water, we recommend you switch to a system boiler. System boilers are designed to work alongside a pressurised water tank (no header tank required in the loft) so that they can provide enough hot water to supply multiple bathroom visits.

They are economical to run and are quick and stress-free to install due to the built-in components. They are also the best type of boiler to install if you have solar panels or renewable energy systems installed in your home.

My Traditional Boiler Keeps Breaking Down! What Is the Best Boiler Replacement?

In some cases, we recommend the homeowner opts for a combi boiler to replace their traditional boiler that regularly breaks down. These are compact, economical, and you won’t need a water cylinder. However, it can sometimes be best to replace your old traditional boiler with a new traditional boiler and continue to heat your hot water the same as before.

However, if you are unhappy with your heating system and want to upgrade to a pressurised water heater, then it’s best to install a system boiler. It will cost more, but you will benefit from a better-integrated heating system. Overall, if you are happy with your traditional boiler and are just tired of paying emergency callout fees, we recommend a direct replacement.

I Am Not Connected to the Mains Gas Network. Which Is Better: Oil or LPG?

Choosing heating when you’re not connected to the mains gas network can be difficult. Some opt for electric, which is expensive to run, but you get the advantage of no service costs. Overall, it is best to opt for an oil boiler or LPG boiler to get the best quality heating for your home for an economical price annually.

Oil provides heat through a specialised boiler. LPG is similar in that you have a tank delivered to you, however, the upfront costs are lower when it comes to installation compared to oil. With this question, it is down to circumstance and is best to ask for advice from your installer as the fuel supply depends on the area you live in.

As you can see, answering the question of ‘what the best type of boiler is’ is not as simple as you may have first thought. It does ultimately come down to circumstances. 

So, when homeowners ask ‘Combi or condensing boiler, which is best?’ we guide them through the advantages of both and ensure they make the right choice for their home.

GK Plumbing Are Trained and Qualified to Install Gas, Oil, Electric and LPG Boilers

We are highly experienced when it comes to installing boilers, and have been installing gas, oil and LPG boilers throughout Buckinghamshire and the surrounding areas for many years now.

We are very honest when it comes to installation prices and ensuring you get the right system for your home. We do not try to upsell a combi boiler if you only require a standard boiler, and are honest when it comes to the number of hours it will take to install.

We are a Worcester Bosch partner meaning we can provide you with the best boilers at a competitive price. Plus, all Worcester Bosch boilers we install come with an exclusive extended guarantee.

If you know you need a new boiler but are not 100% sure what boiler you require, please contact us. We are here to help and are happy to give advice and information with no obligations.