
Get a price for your new gas boiler project from an expert St Johns Gas Safe Registered engineer
Answer these easy questions below to get your free boiler quote
Customer Reviews
”Polite, professional and very efficient! Would recommend our installer George.”
-Linda Mulley
”George was fast, clean, professional and did a great job installing our new boiler. He really knew his stuff and did the job with no hassle. Im only using him for this type of work from now on!”
-James Quinn
“George from Thames Boilers came to install a brand new boiler in my property. Our previous boiler was 21 years old and beyond repair. George went through all the different options available to us, understood our needs and we settled on our new boiler. During installation he explained in detail what he was doing and what he’d be doing next. He was exceptionally clean and tidy throughout the entire installation. He was professional, friendly, courteous, reliable, trustworthy and efficient. I would wholeheartedly recommend Thames Boilers to everyone.”
-David Herrington
What Boilers Do We Recommend To Customers In St Johns?

Vaillant Boilers
Vaillant are one of the most popular boiler brands in the UK. Vaillant are considered by heating engineers to be one of the best boiler manufacturer’s on the market, winning Which? Best Buy awards on a every year.
Worcester Bosch Boilers
Worcester Bosch are one of the best known boiler brands in the country. Like their closest competitors Vaillant and Viessmann boilers, Worcester boilers have recieved lots of Which? Best Buy awards.


Viessmann Boilers
Viessmann are the greatest boiler brand you’ve never heard of. But don’t let that put you off. Viessmann are a huge brand in Europe and, like their competitors Vaillant, they’re German and have been established for over 100 years.
Baxi Boilers
Baxi is another great British heating brand, whose roots go back to Richard Baxendale, an iron founder, who started the Baxendale Company in 1866, based in Preston in Lancashire. Today, Baxi also makes boilers under the Main and Potterton brands. We usually recommend Baxi boilers as the least disruptive replacement to some conventional boilers – and their Main brand for people who are on a budget.

FAQ​
As a rule, if you have one bathroom and good pressure at your kitchen tap or outside tap, a combination boiler is normally the very best choice.
If you have got over one bathroom in your home, a conventional, also called a “heat only” boiler (or perhaps a system boiler) with a hot water tank could be the best choice.
No. For existing houses, if you have to change your central heating boiler from 2035 onwards, you will not be allowed to replace it with another gas boiler. Going by current government plans, you would have to get a Hydrogen boiler or a heat pump. Nonetheless, if your gas boiler is operating in 2035, you will not be required to do anything up until it needs to be changed, such as if it’s broken down and beyond repair.
It can vary hugely depending upon what you require.
However as a rough guide, to take your old boiler out and put a brand-new one in the exact same location ranges from roughly ₤1800 to ₤3000.
And to strip out an old kind of gas boiler with a hot water storage tank {and} put in a combi boiler costs between roughly ₤3000 and ₤5000.
If you require other jobs carried out at the same time, such as a power flush, a new gas pipe, or new radiators, this will certainly contribute to the estimated costs.
If you have only got one bathroom and good water mains pressure, yes.
If you have got more than one bathroom or poor water mains pressure, then no{, you should look at a conventional boiler or a system boiler}.
Yes. There are a number of kinds of smart thermostats that can link to the web so you can manage your boiler from your phone. Some brand names people opt for are Nest, Honeywell, Tado, and Hive.
Yes, we cover the St Johns area, in Greater London (Lewisham) as well as Greenwich, Blackheath, Ladywell, Lewisham, Maze Hill, Kidbrooke, Charlton, Shooters Hill, Woolwich, Mottingham
6 Great Reasons To Replace Your Boiler
1. Reduce Your Gas Bills
Did you know that old fashioned G-rated boilers waste 45p of every £1 you spend on gas? That’s a huge waste of gas and money. But if you get a new A-rated boiler, only 8-9p in every pound is wasted. That’s a huge saving that can add up to up to £570 a year.
2. Save Money On Boiler Breakdowns
3. More powerful showers and fast filling baths
4. Stop running out of hot water
5. Create more space in your home
6. Don’t worry about turning the boiler on again.
We installnew and replacement boilers in the St Johns area in Lewisham
As well as St Johns, Lewisham, we can also help you with yout boiler if you live in:

Gas Boiler Servicing
If you don't want to replace your boiler just yet, we can service or repair it for you to help you keep it going for a bit long and save you money.

Gas Boiler Installation
We can give you a free quote to replace your boiler. It doesn't matter if you need a simple combination boiler replacement or a whole new heating system - we can help you!