Oil Tank Installation

Trade: Plumber

⭐ Introduction

If your home’s heating system runs on oil, having a safe, reliable oil tank is essential. Oil tank installation refers to fitting a new oil storage container, either as part of a new heating system or to replace an old or faulty one.

You might need a new oil tank if:

Your existing tank is leaking, corroded or damaged
You’re upgrading your heating system and require a different tank capacity
You’ve moved into a property without an oil supply and want to install one
Regulations or insurer’s requirements call for a tank upgrade or replacement

In the UK, oil tanks must be installed to ensure fuel safety and environmental protection, so it’s important to have the job done properly by a qualified professional.

🔧 What the job involves

Installing an oil tank means securely fitting a container designed specifically to store heating oil safely. The plumber or heating engineer will:

Choose the right size and type of oil tank for your property and needs
Position it according to Building Regulations and environmental rules, usually in a safe, accessible place outside the home
Connect the tank to your oil boiler or heating system via insulated pipework
Fit all necessary safety components, such as fill points, vents, overfill alarms and bunds (secondary containment to catch leaks)
Test the system for leaks and confirm it’s watertight and secure

Depending on your property, the plumber may install either:

A bunded tank — a tank inside a larger protective casing (offering better spill protection)
A single-skinned tank — less common now and generally subject to stricter placement rules

All work must comply with UK standards such as the Oil Storage (Installation and Use) Regulations 2001 and any local Building Regulations.

📝 Step-by-step from booking to completion

Initial enquiry: Contact a local qualified plumber or heating engineer with experience in oil systems. Describe your situation and requirements.
Site survey and quote: The tradesperson visits to assess your property, existing system (if any), access, and tank placement options. They provide a written estimate for the job.
Scheduling the job: Agree on a date. You may need to prepare the area by clearing space or ensuring good access.
Day of installation: The engineer delivers and installs the new tank, connects pipework, fits safety devices, and tests thoroughly.
Cleaning and disposal: Any old tank and associated waste oil are safely removed and disposed of according to regulations.
Documentation: You receive all necessary paperwork, including a certificate of compliance. This confirms the installation meets legal and safety standards.
Advice & aftercare: The engineer will often advise on routine maintenance and how to check your tank regularly for issues.

💷 Main costs to expect

Labour: Installation usually requires a qualified plumber or heating engineer, with rates typically £150–£250 per day, depending on location and experience.
Materials and parts: New tank (single or bunded), pipework, valves, fills, vents and alarms. Tanks range from about £400 to £1,200+ depending on size and type.
Extras: Groundworks or preparation if the site needs levelling or concrete bases, bunded trays (if needed), and safety signage.
Disposal: Removal and environmentally responsible disposal of old tank and any waste oil.
Certification: Documentation proving compliance with regulations, often included in the plumber’s fee.

Example itemisation:

Bunded oil tank (1000 litres): £700
Pipework and fittings: £200
Labour (1 day): £200
Disposal of old tank: £150
Certification: Included
Total (approx.): £1,250 + VAT

📊 What affects the price

Tank size and type: Larger tanks or bunded tanks cost more.
Accessibility: Tight spaces or height restrictions add labour time.
Installation complexity: Longer pipe runs, extra valves or alarms increase cost.
Regulation requirements: Must meet Oil Storage Regulations and local building rules, which may affect materials and placement.
Remedial works: If old tank removal reveals damage to base or ground, additional repairs add cost.
Location: Prices tend to be higher in London and the South East.
Urgency: Short notice or emergency installations can increase price.

⏱ How long does it take?

Straight swap: Replacing an existing outdoor oil tank generally takes 1 day (6–8 hours).
New installation: Installing a tank where none existed can take 1 to 2 days, allowing for base preparation and connecting pipework.
Complex setups: Large tanks, remote installations or bunded systems with additional safety features may take 2+ days.

🏠 Can you DIY it?

Due to strict safety and environmental regulations, installing an oil tank yourself is not recommended unless you are a qualified heating engineer or plumber.

The Oil Storage (Installation and Use) Regulations 2001 mandate proper fitting and protection measures.
Incorrect installation risks leaks, pollution and safety hazards.
Work must meet Building Regulations and often requires health and safety precautions.
Professionals provide certification necessary for insurance and legal compliance.

For the wellbeing of your home and the environment, it’s safest to hire a qualified professional to install your oil tank.

💰 Typical UK price range

A typical domestic oil tank installation in the UK will usually cost between £1,000 and £2,000 plus VAT, depending on the size of the tank, type of installation, and location.

This is an estimate and prices will vary based on your specific circumstances, contractor rates, and any extras required.

✅ Handy tips before you start

Check tank size: Ensure it matches your heating needs; larger tanks mean fewer deliveries but more space needed.
Clear the area: Make sure there is easy vehicle and pedestrian access for delivery and installation.
Confirm location: Position the tank where it’s accessible but not in the way; councils may have guidance on siting.
Keep documents: Store all certificates and paperwork from your installation safely for future reference and insurance.
Arrange servicing: Have your oil heating system serviced annually by a qualified engineer to keep it running safely and efficiently.
Watch for leaks: Inspect your tank regularly for signs of damage or leaks; early detection avoids costly damage.
Disposal: Ensure old tanks are disposed of responsibly; a qualified engineer usually manages this.

Taking these steps helps your oil tank installation run smoothly and keeps you compliant and secure for years to come.