System Boiler Replacement
Replace your existing system boiler with a suitable new model matched to your home, hot-water demand and heating system. We’ll assess the installation requirements and provide a clear quote.
Boilers expertly installed
We're trusted partners of
Worcester Bosch | Vaillant | Baxi
Your new boiler installation package
The essentials for a safe, efficient boiler installation — clearly included in your quote.
All you need, all in one
A straightforward new boiler installation with the essentials included, from expert fitting to controls and aftercare.
Choose your boiler
Find the right boiler and package for your home.
Book your installation
Choose a convenient installation date and we’ll take care of the fitting.
Enjoy your new heating
Your new boiler is installed, tested and ready to keep your home comfortable.
Compare popular boilers for your home
Compare boiler options for different homes, heating needs and budgets.
Output
24kW
Hot water flow rate
9.8 litres/min
Warranty
5 years
From £1,850
Fitted
Output
25 kW
Hot water flow rate
10.2 litres/min
Guarantee
Up to 10 years
From £2,399
Fitted
Output
25kW
Hot water flow rate
10.5 litres/min
Warranty
Up to 10 years
From £2,699
Fitted
Compare our boiler installation packages
Choose the level of heating controls and system upgrades that suits your home. Every quotation is confirmed for your property before installation.
A straightforward like-for-like combi boiler replacement
Fully Fitted
or from £19.99/mo.
New boiler with smart heating controls
Fully fitted
or from £31.99/mo.
For homes with higher hot-water demand
fylly fitted
or from £43/mo.
Why homeowners choose Let’s Heat
Straightforward advice, quality boiler installations and clear support from quote through to completion
Boiler Options to Suit Your Home
We help you compare suitable boilers based on your heating and hot-water needs, rather than simply recommending the biggest model.
Clear, Upfront Quotes
See what’s included in your boiler installation before you book, with the important installation details clearly explained.
Warranty & Aftercare
Your new boiler comes with the applicable manufacturer warranty, with support available after the installation is complete.
Flexible Ways to Pay
Choose to pay for your new boiler upfront or explore available boiler finance options, subject to status.
Gas Safe registered engineers
Boiler installation, servicing and repairs carried out by Gas Safe registered engineers.
Warranty and aftercare
Clear handover, warranty information and support after your new boiler installation.
Flexible boiler finance
Spread the cost of your new boiler with available finance options, subject to status and lender approval.
Rated by our customers
Read verified customer feedback across our independent review platforms.
Boiler support for every stage
Replace your boiler with confidence
Explore boiler options suited to your property, hot-water needs and existing heating system.
PAYMENT OPTIONS
Spread the cost of your new boiler
Finance options may be available if you would prefer to spread the cost of your new boiler. View available terms and estimated monthly payments on our boiler finance page.
Boiler installation across South Wales & Bristol
Let’s Heat provides boiler installation across Cardiff, Newport, Bristol and surrounding South Wales and South West areas. Check your postcode to confirm availability.
Everything You Need to Know
Still have a questions?
Can't find the answer you're looking for? Please contact with our customer service
A system boiler works with a separate hot-water cylinder and is often suitable for homes with higher hot-water demand or more than one bathroom.
The cost depends on the boiler model, output, installation complexity and whether any work is needed to the cylinder, controls or pipework. We provide a clear quote based on your property and existing system.
Yes, in some homes. Whether a combi conversion is suitable depends on your hot-water demand, mains water pressure and property size. Larger homes may still be better suited to a system boiler.
A straightforward replacement in the same location can often be completed relatively quickly, but timing depends on the existing system and whether additional work is required.
Finance options may be available to help spread the cost of a new boiler, subject to status, eligibility, lender approval and availability.
The right model depends on the size of your property, number of radiators, hot-water cylinder and heating demand. We can help compare suitable options before you choose.
