Gas Boilers

At 5 Star Heating & Renewable Energy Limited, we're your trusted specialists for all gas boiler services throughout Cornwall. With over 25 years of experience and Gas Safe registration, we provide comprehensive gas boiler solutions from installation to emergency repairs.

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Our Gas Boiler Services

New Gas Boiler Installation
Whether you're replacing an old boiler or installing heating in a new property, our Gas Safe registered engineers will recommend and install the perfect gas boiler for your needs and budget.

Gas Boiler Servicing
Regular servicing keeps your gas boiler running efficiently and safely. Our comprehensive annual services include full safety checks, cleaning, and performance optimisation to extend your boiler's lifespan.

Emergency Gas Boiler Repairs
When your gas boiler breaks down, we're available 24/7 for emergency callouts. Our engineers carry common spare parts and can often restore your heating and hot water the same day.

Gas Boiler Replacement
If your old gas boiler is beyond economical repair, we'll help you choose and install a modern, energy-efficient replacement that will save you money on fuel bills.

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Why Choose Gas Boilers?

Gas boilers remain one of the most popular and cost-effective heating solutions for homes across Cornwall:

Cost Effective
Natural gas is typically cheaper than electricity, oil, or LPG, making gas boilers an economical choice for heating your home and providing hot water.

Reliable Supply
Mains gas provides a constant, reliable fuel supply – no need to worry about running out of fuel or arranging deliveries like with oil systems.

Instant Heat
Gas boilers provide instant heat and hot water on demand. No waiting for the system to warm up – comfort when you need it.

Compact Design
Modern gas boilers are compact and can be wall-mounted, saving valuable floor space in your home.

Environmentally Friendly
Gas burns cleaner than oil and produces lower carbon emissions, making it a more environmentally conscious choice.

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Types of Gas Boilers We Install

Combi Boilers
Perfect for smaller homes, combination boilers provide both central heating and hot water from a single compact unit. No separate hot water cylinder required.

System Boilers
Ideal for larger properties with multiple bathrooms. These work with a hot water cylinder to provide high water pressure to multiple outlets simultaneously.

Conventional Boilers
Also known as regular or heat-only boilers, these are perfect for properties with existing cylinder and tank systems or period homes where space isn't at a premium.

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Gas Boiler Brands We Recommend

We work with leading gas boiler manufacturers to ensure you get a reliable, efficient heating system:

• Vaillant – German engineering excellence with excellent reliability
• Worcester Bosch – Market-leading warranties and proven performance
• Ideal – British-made boilers with excellent support network
• Baxi – Cost-effective solutions with good reliability
• Viessmann – Premium efficiency with advanced controls

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Our Gas Boiler Installation Process

Free Survey and Quote
We'll visit your property to assess your heating needs, discuss your requirements, and provide a detailed written quote with no hidden costs.

Professional Installation
Our Gas Safe registered engineers will install your new gas boiler to the highest standards, ensuring all safety requirements are met and Building Regulations compliance.

Full Testing and Commissioning
We thoroughly test your new gas boiler system, check all safety devices, and ensure optimal performance before handover.

Certification and Warranty Registration
You'll receive all necessary certificates and we'll register your warranty with the manufacturer for complete peace of mind.

Aftercare Support
We provide ongoing support and can include your new boiler in one of our comprehensive service plans.

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Gas Boiler Servicing

Regular servicing is essential for safety, efficiency, and reliability. Our comprehensive gas boiler service includes:

• Full safety inspection and gas tightness test
• Flue gas analysis using calibrated equipment
• Cleaning of heat exchanger and condensate trap
• Check and adjustment of gas pressures
• Testing of all safety devices and controls
• Inspection of system components for wear or leaks
• Magnetic filter cleaning (if fitted)
• Carbon monoxide testing
• Provision of Gas Safety Certificate

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Common Gas Boiler Problems We Fix

No Heat or Hot Water
Often caused by faulty thermostats, pumps, or diverter valves. Our engineers can quickly diagnose and repair the issue.

Low Boiler Pressure
Usually indicates a leak in the system or faulty pressure relief valve. We'll identify the cause and restore proper system pressure.

Boiler Keeps Switching Off
This could indicate overheating, low water pressure, or faulty sensors. We'll diagnose the root cause and provide a lasting solution.

Strange Noises
Banging, whistling, or gurgling sounds often indicate trapped air, pump problems, or scale build-up. We'll identify and resolve the issue.

Gas Boiler Won't Ignite
Problems with ignition can be caused by faulty electrodes, gas valve issues, or blocked flue. Our Gas Safe engineers can safely diagnose and repair.

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Why Choose 5 Star Heating & Renewable Energy Limited?

Gas Safe Registered
All our engineers are Gas Safe registered, ensuring your gas work meets legal safety requirements and insurance compliance.

25+ Years Experience
Our extensive experience includes working directly for major companies like British Gas and boiler manufacturer Vaillant, giving us unparalleled expertise.

Quality Materials Only
We only use copper pipes and fittings – never plastic. While more expensive, copper provides better water quality and system longevity.

Local Cornish Business
No middle-man fees or call centre delays. You deal directly with us, ensuring competitive pricing and excellent communication.

24/7 Emergency Service
We're the only plumbing and heating company in Cornwall offering genuine 24/7 emergency callouts for gas boiler breakdowns.

Comprehensive Insurance
Fully insured with Safe Contractor accreditation and Trustmark approval for your complete protection.

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Service Plans Available

Protect your gas boiler investment with our comprehensive service plans:

• Basic Plan – Annual service, carbon monoxide test, and breakdown labour discounts
• Advanced Plan – Includes priority callouts and parts discounts
• Priority Plan – 24-hour priority response and out-of-hours servicing

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Get Your Free Gas Boiler Quote

Whether you need a new gas boiler installation, annual service, or emergency repair, we're here to help. Our Gas Safe registered engineers provide professional, reliable service throughout Cornwall.

Contact us today for your free, no-obligation quote and discover why we're the first choice for gas boiler services in Cornwall.

5 Star Heating & Renewable Energy Limited – your trusted Gas Safe registered heating specialists.