Efficiency Through Correct Sizing
A modern, appropriately sized boiler properly commissioned tends to run more efficiently than an oversized or ageing unit working harder than it needs to.
Boilers & Heating In South Wales
Efficient, reliable heating, boiler replacements and heating upgrades by Gas Safe registered engineers, with manufacturer-backed warranties and clear, property-specific quotes.
- Gas Safe Registered
- Manufacturer-Backed Warranty
- Free Assessment
- Property-Specific Quotes
- No Obligation
- Gas Safe Registered
- Manufacturer-Backed Warranty
- Free Assessment
- Property-Specific Quotes
- No Obligation
Get Started
Book Your Free Assessment
Submit your details and we'll arrange a free, no-obligation boiler and heating assessment.
We Assess Before We Quote. We check your existing system, flue, gas supply, radiators and controls first.
Gas Safe Registered, Manufacturer-Backed Warranty, Property-Specific Quotes
Assessment Evidence
A New Boiler Is Only As Good As The System Around It
Correct sizing, the flue, gas supply, radiator balance, controls and a clean system all decide how a new boiler performs. We check the existing system on site before quoting, so the recommendation fits the property rather than a default spec.
- Correct Sizing
- Flue
- Gas Supply
- Radiators
- Controls
- System Cleanliness
Why It Matters
Efficient, Reliable, Comfortable Heating
A modern boiler properly sized, installed and commissioned does its job quietly in the background. The benefits are practical, not flashy.
Reliability You Can Plan Around
Replacing an end-of-life boiler on a planned basis avoids reactive callouts and the discomfort of a cold home in the middle of winter.
Comfort & Control
Paired with up-to-date controls and balanced radiators, a new boiler delivers steadier room temperatures and easier day-to-day control.
Common Signs
What We Often See On Site
The patterns below frequently point to a boiler at the end of its life, a system that needs protecting, or controls that no longer match how the home is used.
Ageing Boiler
Why It Matters
Older units generally run at lower efficiency and parts become harder to source as models go end-of-life.
Common Signs
- Low Efficiency
- Parts Scarce
- End Of Life
Repeated Breakdowns
Why It Matters
Recurring faults often signal a system at the end of its serviceable life, not a one-off component failure.
Common Signs
- Recurring Faults
- Reactive Callouts
- Component Failure
Uneven Heat Across The Home
Why It Matters
Often points to balancing issues, undersized or oversized boiler output, or controls that no longer match how the home is used.
Common Signs
- Cold Radiators
- Balancing Issues
- Wrong Output
No Controls Or Old Programmer
Why It Matters
A modern boiler with old controls cannot do its job properly. Controls upgrades often deliver the most noticeable change.
Common Signs
- Old Programmer
- No Zoning
- Poor Control
Noisy System Or Sludge
Why It Matters
Banging, kettling or cold spots typically indicate sludge build-up. A flush, inhibitor and filter protect a new boiler and improve heat distribution.
Common Signs
- Banging
- Kettling
- Cold Spots
Our Process
1
Assessment
We check your existing boiler, flue, gas supply, radiators and controls so the recommendation actually fits the property.
2
Recommendation & Quote
A written, property-specific quote covering boiler type, output, system protection, controls and any additional works.
3
Install & Commission
Gas Safe registered engineer installs the new boiler, flushes and doses the system, and commissions to manufacturer requirements.
4
Aftercare & Registration
Gas Safe notification, Benchmark book completed and manufacturer warranty registered on your behalf, plus aftercare guidance.
Timeline
Typically 1 Day
Team
Gas Safe Engineer
System
Correctly Sized Boiler
Warranty
Manufacturer-Backed
Payment
On Completion
What We Do
Boilers, Heating & System Protection
From a like-for-like swap to a wider heating upgrade, every job is property-specific and installed by Gas Safe registered engineers.
Boiler Replacement
Combi, system and regular boiler replacements from leading manufacturers, sized to the property and installed by a Gas Safe registered engineer.
System Upgrades
Radiator balancing, valve replacements, cylinder upgrades and pipework improvements to bring the wider system in line with the new boiler.
Repairs
Diagnosis and repair of gas boilers and heating faults, with clear advice on whether repair or replacement is the better call for your system.
Power Flush & System Protection
Power flushing where needed, inhibitor dosing and inline magnetic filter installation to protect the new boiler and improve heat distribution.
Controls Upgrade
Programmable and smart thermostats, TRVs and zoning, configured to suit your home. Paired with new or existing boilers.
Heating ControlsCoordinated Upgrade
Pair A New Boiler With Upgraded Controls
A modern boiler delivers more of what it is designed to deliver when paired with up-to-date controls. We handle both in-house so the recommendation joins up.
If you are considering low-carbon heating, we are happy to discuss it neutrally. For some homes a heat pump is a good fit today, for others a modern gas boiler is the sensible choice. No pressure either way.
Installation Day
What Happens On The Day
Step 01 Of 04
Isolate & Remove
The old boiler is isolated and removed safely, with pipework and flue prepared for the new install.
What We Do
- Isolate the gas, water and electrical supplies safely
- Remove the old boiler
- Prepare the pipework and flue
Social Housing & Commercial
Landlord Gas Safety & HA Heating Programmes
Landlord gas safety inspections and certificates (LGSR / CP12), communal and HA heating works, planned boiler replacement programmes, void works and compliance and completion documentation for landlords and managing agents.
Pricing
What Affects Your Quote
Boiler and heating quotes are property-specific. We base your written quotation on these key variables, confirmed at the free assessment.
Boiler Type & Output
System Changes
Controls
Flue / Relocation
Power Flush
£ Finance
Finance Options:
Spread The Cost
Monthly payment options are available for new boilers and central heating upgrades, provided through our partner Ideal4Finance, with 0% finance available on selected agreements.
Choose a term that suits your household, see the full agreement before you commit, and pay a fixed monthly repayment for the length of the term.
Finance is a regulated credit agreement arranged through Ideal4Finance. You apply directly, the agreement is subject to status, and you'll see the full terms, including the total amount repayable, before you sign anything.
Your Payment Options
Monthly Payment Options
Spread the cost over an agreed term with a fixed monthly repayment.
Full Terms Up Front
Every agreement shows the complete cost and term before you commit.
No Obligation
Finance is a payment option, not a requirement. You can pay for your installation without it.
Find Out If You're Eligible
Enter your postcode below to check your eligibility and explore finance options for your installation.
Document
Handover Pack
Your Handover Pack
Everything documented on completion, so the install is notified, warrantied and set up properly.
Benchmark Record
Completed on the day as part of the commissioning.
Manufacturer Warranty Registration
Registered for your new boiler.
Gas Safe Notification
The install notified as required.
Controls Setup
Configured and demonstrated so you can run the system.
Gas Safe Installs, Manufacturer-Backed Warranty
A boiler install is a regulated, notifiable piece of work. We treat it as such: assessed before quoting, installed by a Gas Safe registered engineer, commissioned to manufacturer requirements and registered so the warranty stands.
Real Homeowner Reviews
Loved By Homeowners, Trusted By Experts
We're proud to help South Wales homeowners protect the property they live in every day. Here is what some of our customers have shared after working with us.
Gas Safe RegisteredManufacturer-Backed Warranty
Old combi replaced with a properly sized system boiler, full flush, new filter and a smart thermostat. Tidy install and everything documented before they left.
Engineer assessed the gas supply and flue before quoting, which I appreciated. Warranty paperwork through within the week.
4.6
Rated 4.6 On 50 Google Reviews
4.6
Rated 4.6 On 55 Trustpilot Reviews
Transparent Pricing
Every Quote Is Built Around Your Property - Not A Price List.
No guesswork. No off-the-shelf packages. We assess your existing boiler, flue, gas supply, radiators and controls, so you only pay for the system your property actually needs.
Boiler Type & Output
The boiler type and output sized to the property's demand.
System Changes
Any radiator, pipework or system work the design requires.
Controls
The control system specified, from programmers to smart zoning.
How It Works
- 1We assess your existing boiler, flue, gas supply, radiators and controls
- 2We size the boiler and any system work to the property
- 3A written, property-specific quotation is issued
- 4No off-the-shelf packages, no fixed-package upsell
Ready To Get Your Quote?
Get in touch and we'll arrange your free boiler and heating assessment. We'll check your existing system and issue a clear, property-specific quotation.
Frequently Asked Questions
It depends on the property: size and layout, hot water demand, number of bathrooms, gas supply and existing system type. We assess all of that before recommending a combi, system or regular boiler and a sensible output. The recommendation is written down so you can see why it suits your home.
Not always. We inspect the existing system, check for sludge and circulation issues, and recommend a power flush only when the system actually needs one. Where a flush is not required, we still dose with inhibitor and fit a magnetic filter to protect the new boiler.
Most straightforward like-for-like swaps are completed in around a day. System changes, flue relocations or boiler-type changes can take longer. We confirm the realistic timeline in the written quote so there are no surprises.
Boilers we install carry a manufacturer-backed warranty, registered on your behalf when the work is commissioned. Specific warranty length depends on the manufacturer, model and installer accreditation, and is confirmed in the written quote.
For some homes a heat pump is a good fit, for others a modern gas boiler is the more sensible choice today. We treat it as a genuine question rather than a sales angle. If you want to explore low-carbon heating, we can run a separate heat pump assessment, and you can read more on our Air Source Heat Pumps page.
Yes. We carry out landlord gas safety inspections and certificates, planned boiler replacement programmes, communal and HA heating works, void works and provide compliance and completion documentation for landlords and managing agents.
Book Your Free Boiler & Heating Assessment
Complete the form and we'll arrange your free, no-obligation boiler and heating assessment. Or call 0800 009 2992.