Professional Boiler Installation
Whether your boiler has broken down or you want to upgrade to a more efficient model, CCS Heating & Renewables provides Gas Safe registered boiler installation across Cornwall. We fit market-leading brands including Worcester Bosch, Vaillant, and Ideal, each offering extended warranties of up to 12 years when installed by an accredited installer. Modern A-rated condensing boilers achieve 92%+ efficiency compared to 60–80% for older models. There is no ban on gas boilers in existing homes — the government's policy (as of January 2025) requires only new builds to install low-carbon heating from 2028. Homeowners can buy, install, and replace gas boilers for the foreseeable future. We install combi boilers, system boilers with hot water cylinders, and regular (heat-only) boilers depending on your property type and hot water demands. Every installation includes a full system flush, Gas Safe certification, and warranty registration. We also advise on the heat pump option at every boiler survey, so you understand all your choices including the £7,500 BUS grant.
Key Benefits
Benefits of a New Boiler
Lower Energy Bills
A modern 92%+ efficient condensing boiler can reduce gas consumption by 20–30% compared to an older G-rated model — at Q2 2026 gas prices, this can save £150–£300/yr.
Up to 12-Year Warranty
As accredited installers for Worcester Bosch and Vaillant, we can offer manufacturer warranties of up to 12 years — the strongest in the industry.
Gas Safe Certified
Every installation is completed by Gas Safe registered engineers and certified to current Building Regulations. It is illegal for unregistered engineers to work on gas.
Reliable Hot Water
Modern combi boilers deliver instant hot water on demand. System boilers provide high-flow, mains-pressure hot water to multiple outlets simultaneously.
Quick Installation
Most straightforward combi boiler swaps are completed in a single day. We carry a full system flush and inhibitor treatment as standard.
No Gas Boiler Ban on Existing Homes
The Labour government confirmed in January 2025 that there is no planned ban on gas boilers in existing homes. You can replace your boiler with confidence.
Our Process
How It Works
Free Survey
We visit your property to assess your heating needs, measure heat loss, and discuss the best options for your home.
Design & Quote
We design a bespoke system, identify all eligible grants including the £7,500 BUS scheme, and provide a transparent fixed-price quote.
Installation
Our MCS certified engineers install your system cleanly and efficiently, typically within 2–4 days, with minimal disruption to your home.
Aftercare
Full system handover, MCS certification, warranty registration, BUS grant application completion, and ongoing support when you need it.
Boiler Costs
A new gas combi boiler swap (like-for-like) costs £1,800–£3,000 installed, averaging around £2,200–£2,500. System boilers with a hot water cylinder cost £2,000–£3,500. Full system replacement including new radiators can reach £3,500–£6,000+. Worcester Bosch installations come with up to 12-year parts and labour warranties; Vaillant up to 12 years via their myREWARDS programme. We provide fixed-price quotes with no hidden costs. Every quote includes removal of your old boiler, chemical system flush, and full commissioning. Finance options are available.
Trusted Partners
Brands We Install
What We Install
Products We Use
We only install products we trust. Click any product below to see full specifications and why we recommend it.
Areas We Cover for Boilers
We install boilers across Cornwall. Click your area for local information and a free quote.
Pair Your Boilers with Another Service
Many of our customers save more by combining services. Here's what works best with a Boilers.
Ready to Upgrade to a Heat Pump?
A new boiler is a solid short-term fix, but a heat pump is the long-term solution. The £7,500 Boiler Upgrade Scheme grant makes the switch more affordable than many expect — and you'll never pay a gas bill again.
Want a bundled quote for multiple services? Contact us for a combined survey.
Our Work
Recent Boilers Projects
Real installations by our team across Cornwall — challenge, solution, and outcome.
Common Questions
Frequently Asked Questions
01 How much does a new boiler cost?
02 How long does a boiler installation take?
03 Should I repair or replace my boiler?
04 How often should a boiler be serviced?
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