Boiler Replacement
We proudly serve customers across London & Surrey and the surrounding areas.
Contact Us – Reliable Boiler Services in Surrey & London
Ready to upgrade or repair your boiler?
At Certificates4UK Ltd (C4UK), we make it simple to restore your heating, improve efficiency, and ensure full safety compliance. Contact our friendly team today for a free quotation — we’ll answer your questions and guide you through the process from start to finish.
BOILER REPLACEMENT & POWER FLUSH
Clear Pricing. Proper Installation. No Shortcuts.
Replacing a boiler without cleaning the system is one of the most common causes of early breakdowns, poor efficiency, and voided warranties.
At Certificates4UK Ltd, every boiler replacement quotation includes the option of a full system power flush, ensuring your new boiler is installed onto a clean, protected heating system.
Fixed Labour Pricing
Boiler Replacement & Power Flush and inhibitor Labour:
from £870
Includes:
- Boiler replacement labour
- Full power flush of the heating system (up to 7 radiators)
- Inhibitor added after flushing
Additional radiators: £50 each
Boiler and flue not included
Quoted separately to suit your property layout and requirements.
Why a Power Flush Is Essential
Over time, heating systems build up:
- Sludge and magnetite
- Rust and debris
- Contamination that restricts circulation
If left untreated, this can:
- Causes overheating and boiler shutdowns
- Damage pumps and heat exchangers
- Reduce efficiency and lifespan
- Invalidate manufacturer warranties
A power flush removes these risks before your new boiler is commissioned.
Installed by Gas Safe Engineers
Every installation includes:
- Benchmark commissioning certificate
- Gas Safety Certificate (CP12)
- Building Regulations compliance
- Correct boiler sizing advice
- Optional extended manufacturer warranties
- 1-year fitting warranty for complete peace of mind
Additional Requirements (If Not Already Installed)
Some components are legally required or strongly recommended when installing a new boiler.
Magnetic System Filter
Required by current installation standards.
Supply & fit: £140
Programmable Room Thermostat
Required with all new boiler installations.
Honeywell T3R Wireless Programmable Thermostat
Supply & fit: £145
Limescale Protector
Required in hard water areas to protect the boiler heat exchanger.
Supply & fit: £60
Condensate Pipe Upgrade
Upgrade from 21.5 mm to 32 mm for external runs.
Supply & fit: £80
Condensate pump and installation are not included if required.
Carbon Monoxide (CO) Alarm
Kidde CO alarm – supply & fit: £20
Thermostatic Radiator Valves (TRVs)
Supply & fit: £45 per radiator
Boiler Disposal (Optional)
£40
Flue Installation Notice
This quotation includes:
- Standard horizontal flue only
Not included:
- Vertical flue installations
- Flue extensions
Flue pricing varies depending on:
- Flue type
- Length
- Installation complexity
A site assessment may be required.
Our service includes:
✅ 1-Year Fitting Warranty – Peace of mind guaranteed
✅ Extended Manufacturer Warranties – Available on many boiler brands
✅ Completed Benchmark Certificate – Proof your installation meets Gas Safe standards
✅ Gas Safety Certificate (CP12) – Provided with every installation
✅ 100% Customer Satisfaction – Trusted by homeowners and landlords across Surrey and London
✅ Building Regulations Compliance Certificate – Legal documentation for your records
✅ Expert Boiler Advice – Helping you choose the right boiler for efficiency and performance
We Provide Professional Property Compliance Services
We Provide Professional Property Compliance Services
- Boiler Installation & Replacement Services Near You
- Gas Safety Certificates (CP12) and full Gas Safe Inspections
- Emergency Boiler Repairs in Surrey and London
- Energy Performance Certificates (EPC)
- Electrical Installation Condition Reports (EICR)
At C4UK, we focus on optimizing your home’s energy efficiency while keeping costs affordable. Our engineers assess your heating system carefully to recommend the best boiler options — ensuring comfort, compliance, and cost savings all year round.
Why Choose Us for Boiler Replacement?
Whether your boiler is old, inefficient, or has completely stopped working, our Gas Safe-registered engineers are here to help. We specialise in safe, high-quality boiler replacement and repair services across Surrey and London.
Why Choose C4UK for Boiler Replacement?
🔹 Expert Engineers – Every installation is carried out by certified Gas Safe professionals.
🔹 Energy-Efficient Options – We supply top-rated boilers that reduce energy use and carbon emissions.
🔹 Tailored Recommendations – Get expert advice on the best system for your home and lifestyle.
Common Signs It’s Time to Replace Your Boiler
- Your boiler is over 12–20 years old
- It makes banging, whistling, or gurgling noises
- You’ve noticed higher energy bills
- Inconsistent heating or hot water
- The system frequently breaks down
Don’t wait for a complete failure — upgrade before small faults become costly repairs.
Our Boiler Replacement Process
- Consultation – Get in touch to discuss your heating system or book a same-day emergency visit.
- Assessment – Our engineer inspects your current setup and identifies the most efficient solution.
- Quotation – Receive a transparent, no-obligation quote with no hidden fees.
- Installation – We install your new boiler safely and ensure full compliance with Gas Safe regulations.
Areas We Cover
C4UK proudly serves Surrey, London, and the surrounding areas, offering trusted boiler services for homeowners, landlords, and businesses.
If you’re searching for “boiler repair near me” or “boiler replacement Surrey”, we’re your local, reliable choice.
Contact C4UK Today
📧 Email: info@certificates4uk.co.uk
📞 Call: 07596076700
💬 Text Us: Available during business hours
Let Certificates4UK Ltd help you enjoy a warmer, safer, and more energy-efficient home with our professional boiler repair and replacement services.
Frequently Asked Questions
How much does a boiler replacement cost in Surrey?
Boiler replacement costs in Surrey vary depending on the boiler type and installation requirements. Our installation labour starts from £820 (boiler not included). Full installations, including the boiler, typically range from £1,800 to £3,000+.
What does a boiler installation cost include?
Covers labour only. This includes removal of the old boiler, installation of the new boiler, standard connections, full testing, Benchmark completion, and Gas Safe with CP12 certification.
What is not included in the boiler installation price?
The boiler unit itself is not included in the £820 labour cost. Additional work, such as system upgrades, flue changes, or power flushing, may also be charged separately if required.
How long does a boiler replacement take?
Most boiler replacements are completed within one day. More complex installations, such as system conversions or relocations, may take 1–2 days.
Do I need a Gas Safe engineer for boiler replacement?
Yes, all boiler installations and replacements must legally be carried out by a Gas Safe registered engineer. We provide full Gas Safe certification with CP12 for safety and compliance.
Blogs
USFULL LINKS
Gas Safe Register www.gassaferegister.co.uk
EPC read more
Gas Safe Certificate read more
EIRC read more