Oil Boilers

At 5 Star Heating & Renewable Energy Limited, we're Cornwall's trusted specialists for all oil boiler services. With over 25 years of experience and OFTEC registration, we provide comprehensive oil heating solutions from installation to emergency repairs for properties across Cornwall.

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Our Oil Boiler Services

New Oil Boiler Installation
Whether you're upgrading an existing oil system or installing heating in a rural property without mains gas, our OFTEC registered engineers will design and install the perfect oil boiler system for your needs.

Oil Boiler Servicing
Regular servicing is crucial for oil boilers to maintain efficiency, safety, and reliability. Our comprehensive annual services include full safety checks, cleaning, and performance optimisation.

Emergency Oil Boiler Repairs
When your oil boiler fails, we're available 24/7 for emergency callouts. Our engineers understand oil systems inside out and carry common spare parts for same-day repairs where possible.

Oil Tank Installation & Maintenance
We install and maintain oil storage tanks to current regulations, ensuring safe, compliant fuel storage for your heating system.

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Why Choose Oil Boilers?

Oil boilers are an excellent heating solution, particularly for rural Cornwall properties:

Perfect for Rural Areas
Oil boilers are ideal for properties without access to mains gas, providing reliable heating and hot water in remote locations across Cornwall.

High Heat Output
Oil burns hotter than gas, making oil boilers excellent for larger properties or homes with high heating demands.

Fuel Storage Control
With your own oil tank, you control when you buy fuel and can take advantage of seasonal price variations or bulk purchase discounts.

Reliable Performance
Modern oil boilers are highly reliable and can provide decades of dependable service with proper maintenance.

Excellent Efficiency
Today's oil boilers achieve impressive efficiency ratings, often exceeding 90%, helping to keep running costs manageable.

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Types of Oil Boilers We Install

Combi Oil Boilers
Space-saving combination units that provide both central heating and instant hot water without requiring a separate cylinder. Perfect for smaller properties.

System Oil Boilers
Work with an unvented hot water cylinder to provide high-pressure hot water to multiple outlets simultaneously. Ideal for larger homes with multiple bathrooms.

Conventional Oil Boilers
Regular oil boilers that work with traditional vented cylinders and header tanks. Perfect for replacing existing systems or period properties.

Condensing Oil Boilers
High-efficiency units that recover heat from flue gases, achieving maximum efficiency and reducing fuel consumption.

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Oil Boiler Brands We Recommend

We work with leading oil boiler manufacturers to ensure reliable, efficient heating:

• Vaillant – Premium German engineering with excellent reliability
• Worcester Bosch – Market-leading warranties and proven track record
• Firebird – Irish-manufactured boilers designed specifically for oil firing
• Grant – UK's leading oil boiler manufacturer with comprehensive range
• Warmflow – Northern Irish quality with excellent support network

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Our Oil Boiler Installation Process

Free Site Survey
We'll assess your property, discuss your heating requirements, evaluate oil tank positioning, and provide a detailed written quotation.

System Design
Our OFTEC engineers design your oil heating system to provide optimal comfort and efficiency whilst meeting all safety regulations.

Professional Installation
Complete installation by OFTEC registered engineers, ensuring all work meets current Building Regulations and safety standards.

Oil Tank Installation
If required, we'll install your oil storage tank in compliance with current regulations, including proper bunding and fire safety measures.

Testing and Commissioning
Comprehensive testing of your new oil boiler system, including efficiency testing, safety device checks, and performance optimisation.

Certification and Handover
You'll receive all necessary certificates and comprehensive handover, plus warranty registration for complete peace of mind.

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Oil Boiler Servicing

Annual servicing is essential for oil boilers. Our comprehensive service includes:

• Complete combustion analysis and efficiency testing
• Cleaning of heat exchanger and burner components
• Oil pump pressure testing and adjustment
• Flue and ventilation checks for safety compliance
• Control system testing and calibration
• Oil tank and supply line inspection
• Filter replacement and system cleaning
• Safety device testing
• Carbon monoxide testing
• Issue of service certificate

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Common Oil Boiler Problems We Fix

Boiler Won't Start
Often caused by fuel supply issues, faulty pumps, or electrical problems. Our OFTEC engineers can quickly diagnose and resolve starting problems.

Poor Heat Output
Usually indicates burner problems, blocked filters, or system circulation issues. We'll restore your boiler to full efficiency.

Excessive Fuel Consumption
Can indicate poor combustion efficiency or system losses. Our diagnostic approach identifies and corrects the root cause.

Smoky or Sooty Deposits
Indicates incomplete combustion requiring burner adjustment or cleaning. We'll optimise combustion for clean, efficient operation.

Oil Smell or Leaks
Safety-critical issues requiring immediate attention. Our emergency service can secure your system and prevent environmental damage.

Frequent Lockouts
Repeated boiler shutdowns often indicate sensor problems or system faults. We'll diagnose and provide lasting solutions.

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Oil Tank Services

New Oil Tank Installation
We install oil storage tanks to current regulations, including:

• Single and double-skinned tanks
• Above and below-ground installation
• Proper bunding and fire safety measures
• Gauge and alarm systems

Oil Tank Maintenance
Regular inspection and maintenance of:

• Tank integrity and leak detection
• Fuel quality testing
• Filter and gauge replacement
• Vent and fill cap maintenance

Oil Tank Replacement
When tanks reach end of life, we provide:

• Safe removal of old tanks
• Environmental compliance
• New tank installation to current standards
• Fuel transfer where appropriate

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Why Choose 5 Star Heating & Renewable Energy Limited?

OFTEC Registered
All our oil work is carried out by OFTEC registered engineers, ensuring legal compliance and insurance validity for your oil heating system.

25+ Years Experience
Extensive experience gained working with major companies including direct employment with British Gas and boiler manufacturers, giving us unmatched expertise.

Quality Materials Only
We only fit copper pipes and components – never plastic. While more expensive, copper provides superior longevity and water quality.

Local Cornish Business
Direct service with no middle-man fees. You deal with us personally, ensuring competitive pricing and excellent communication throughout.

True 24/7 Emergency Service
We're the only heating company in Cornwall offering genuine 24/7 emergency callouts for oil boiler breakdowns – when others go to answerphone, we're still here.

Fully Insured and Accredited
Comprehensive insurance with Safe Contractor and Trustmark accreditation for your complete protection and peace of mind.

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Rural Cornwall Specialists

Understanding the unique challenges of rural properties, we provide:

Difficult Access Solutions
Experience with remote properties and challenging access for oil deliveries and maintenance.

Holiday Let Expertise
Excellent communication and rapid response perfect for holiday let operators who can't afford heating downtime.

Agricultural Property Knowledge
Understanding of farm buildings and agricultural heating requirements across Cornwall's rural communities.

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Service Plans Available

Protect your oil boiler investment with our tailored service plans:

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

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Environmental Responsibility

We're committed to environmental protection:

• Proper disposal of old oil and components
• Spill prevention and containment procedures
• Installation to environmental protection standards
• Advice on efficient operation to minimise consumption

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Get Your Free Oil Boiler Quote

Whether you need a new oil boiler installation, annual service, or emergency repair, our OFTEC registered engineers are here to help throughout Cornwall.

Contact us today for your free, no-obligation quote and discover why we're Cornwall's first choice for oil heating services.

5 Star Heating & Renewable Energy Limited – your trusted OFTEC registered oil heating specialists.