22/01/2020
Many homeowners who rely on heating oil for their properties often find themselves asking, "How much does an oil tank installation cost?" The lifespan of a good quality oil tank, with proper upkeep, can extend to a decade or even more. However, when the inevitable time comes for a replacement, understanding the financial commitment involved is crucial. This guide aims to demystify the process, exploring the various factors that contribute to the overall price of an oil tank installation and providing insights to help you make an informed decision.

When Should You Consider Replacing Your Oil Tank?
The decision to replace your oil tank is often prompted by professional advice. If an OFTEC (Oil Firing Technical Association) registered engineer recommends a replacement, it is highly advisable to follow their guidance. While OFTEC itself cannot mandate a replacement, your home insurance provider likely will. Insurance policies often contain clauses requiring policyholders to adhere to the recommendations of qualified engineers to maintain coverage. Ignoring such advice could potentially invalidate your insurance in the event of a leak or other incident related to an aging or faulty tank.
Several indicators might suggest your oil tank is nearing the end of its service life:
- Age: While a well-maintained tank can last many years, most tanks have a finite lifespan, typically between 15 to 25 years, depending on the material and environmental conditions.
- Corrosion or Damage: Visible signs of rust, cracks, dents, or bulging on the tank's exterior are clear warnings. Pay particular attention to the base and any fittings.
- Leaking or Odours: Any smell of oil around the tank or observable leaks is a critical sign that immediate action is required. Even small leaks can be environmentally damaging and costly.
- Condensation: While not always indicative of failure, excessive condensation inside the tank can lead to water contamination, which can affect your heating system's performance and potentially cause corrosion.
- OFTEC Inspection: Regular inspections by an OFTEC engineer are the most reliable way to assess the condition of your tank. They are trained to spot potential issues you might miss.
Factors Affecting Oil Tank Installation Costs
The price you pay for an oil tank installation is not a fixed figure. It's influenced by a combination of elements, each playing a role in the final quote. Understanding these factors will empower you to budget effectively and compare quotes accurately:
1. Type and Size of the Oil Tank
The most significant cost determinant is the tank itself. You'll encounter different materials and sizes:
- Material:
- Plastic (Polyethylene): These are the most common and generally the most affordable option. They are lightweight, corrosion-resistant, and durable. Prices vary based on the size and specific manufacturer.
- Steel: Steel tanks are robust and can be more expensive than plastic ones. They often require a protective coating to prevent rust and may need more frequent inspections.
- Fibre-glass: Less common but still available, these offer good durability and corrosion resistance, often falling between plastic and steel in terms of cost.
- Size: The capacity of the tank is directly related to its cost. Standard domestic oil tanks range from 1,000 litres to 2,500 litres (approximately 220 to 550 gallons). Larger tanks will naturally cost more due to the increased material and potentially more complex installation.
2. Location and Accessibility
Where your existing tank is situated and how easy it is to access can significantly impact labour costs:
- Ease of Access: If the tank is in a remote or difficult-to-reach location (e.g., up a steep hill, through narrow gates, or requiring extensive groundwork), installation will take longer and therefore cost more.
- Ground Conditions: Rocky or uneven ground may require more preparation, such as levelling or creating a concrete base, adding to the overall expense.
- Distance from Delivery Point: If the new tank needs to be transported a long distance from the delivery vehicle, this can also factor into labour time.
3. Existing Tank Removal and Disposal
You'll need to consider the cost of safely removing and disposing of your old oil tank. This is a crucial environmental consideration:
- Hazardous Waste: Old oil tanks, especially if they have contained oil, may be classified as hazardous waste and require specific disposal procedures, which can incur additional fees.
- Emptying and Cleaning: Before removal, the tank will need to be emptied of any residual oil and cleaned, which is a service typically provided by the installation company.
4. Additional Components and Services
Beyond the tank itself, several other items and services contribute to the final price:
- Bunded Tanks: These are tanks with a secondary containment layer, designed to hold at least 110% of the primary tank's capacity. They are often mandatory in certain areas or for specific building regulations and are more expensive than single-skinned tanks.
- Ancillary Fittings: This includes the oil line, isolation valve, fill pipe, overflow pipe, and any necessary gauges or alarms.
- Concrete Base or Support: Most oil tanks require a stable, level base. If one doesn't exist, the cost of constructing a concrete plinth or suitable base will be added.
- Commissioning and Testing: Once installed, the system will need to be commissioned and tested to ensure it's working correctly and safely.
- Associated Pipework: If your heating system requires new pipework to connect to the tank, this will add to the cost.
5. Labour Costs and Location
The hourly rates charged by heating engineers and OFTEC-registered technicians can vary depending on their experience, qualifications, and geographical location. Generally, you can expect to pay more in areas with a higher cost of living.
Getting a Quote for Oil Tank Installation
To get an accurate quote, you need to be prepared and follow a structured approach:
Step 1: Assess Your Needs
Before contacting installers, determine the approximate size of tank you require. This is usually based on your property's heating oil consumption. If you're unsure, a qualified engineer can help you determine the correct size during an initial assessment.
Step 2: Research OFTEC-Registered Installers
It is crucial to use an OFTEC-registered installer. OFTEC sets industry standards for oil heating and fuel storage, ensuring that work is carried out safely and to regulatory requirements. You can usually find a list of registered installers on the OFTEC website or through local directories. Look for companies with good reviews and a solid reputation.
Step 3: Contact Multiple Installers for Quotes
Don't settle for the first quote you receive. Contact at least three different OFTEC-registered installers to request a detailed, written quotation. Be sure to provide them with as much information as possible about your current setup, your property, and your specific requirements (e.g., bunded tank, specific location).
Step 4: Compare Quotes Carefully
When comparing quotes, look beyond just the final price. Ensure each quote includes:
- The exact type and size of the tank.
- The cost of removal and disposal of the old tank.
- Details of all ancillary fittings and pipework.
- The cost of any necessary base preparation.
- Labour costs.
- VAT.
- Warranty information for both the tank and the installation work.
A quote that seems significantly lower than others might indicate that something is missing or that cheaper, lower-quality materials are being used. Always clarify any uncertainties with the installer.
Step 5: Understand Warranties
Reputable installers and tank manufacturers will offer warranties. Typically, plastic tanks come with a 10-year manufacturer's warranty, while steel tanks may have a shorter warranty but often a longer expected lifespan if properly maintained. Ask about the warranty on the installation work itself – this typically covers workmanship for a shorter period.

Typical Cost Ranges (Illustrative)
While exact figures vary widely, here are some general price ranges to give you an idea:
| Service/Item | Estimated Cost Range (GBP) |
|---|---|
| 1200 Litre Plastic Tank (Single Skin) | £800 - £1,200 |
| 1200 Litre Plastic Tank (Bunded) | £1,200 - £1,800 |
| Steel Tank (Single Skin) | £1,000 - £1,500 |
| Installation Labour (per day) | £250 - £400 |
| Old Tank Removal & Disposal | £200 - £500 |
| Concrete Base Preparation | £300 - £700 |
Please note: These are approximate figures and can vary significantly based on the factors mentioned previously and your specific location in the UK. Always obtain a formal quote.
Frequently Asked Questions (FAQs)
Q1: How long does an oil tank installation typically take?
A typical installation, assuming straightforward access and no major groundwork, can take anywhere from one to two days to complete. This includes removing the old tank, preparing the base, installing the new tank and fittings, and commissioning the system.
Q2: Do I need planning permission for a new oil tank?
In most cases, you do not need planning permission for a domestic oil tank. However, there are specific regulations regarding the placement and size of oil tanks, particularly concerning their proximity to boundaries, buildings, and watercourses. It is always best to check with your local authority or your OFTEC installer if you have any doubts.
Q3: What are the regulations for oil tank placement?
OFTEC provides comprehensive guidance on regulations for oil tank installation and placement. Key considerations include:
- Separation Distances: Tanks must be a safe distance from property boundaries, flues, air vents, and any potential ignition sources.
- Containment: In many areas, particularly in England and Wales, and in 'high risk' areas in Scotland and Northern Ireland, oil tanks must be bunded to prevent environmental pollution in case of a leak.
- Ventilation: The area around the tank should be adequately ventilated.
- Base: The tank must be installed on a suitable, level, and fire-resistant base.
Your installer will be fully aware of these regulations and ensure compliance.
Q4: Can I install an oil tank myself?
It is strongly advised against installing an oil tank yourself unless you are a qualified and OFTEC-registered professional. Incorrect installation can lead to leaks, environmental damage, safety hazards, and could invalidate your home insurance and manufacturer's warranty.
Q5: What is the difference between a single-skinned and a bunded oil tank?
A single-skinned tank has one layer of material. A bunded tank has an outer 'skin' or containment wall that can hold at least 110% of the inner tank's capacity. Bunded tanks are considered a safer option and are often a legal requirement in environmentally sensitive areas or where there's a risk of pollution. They are, however, more expensive.
Conclusion
Understanding the cost of an oil tank installation involves looking at the tank itself, the complexity of the installation, and the services required for removal and disposal. By researching OFTEC-registered installers, obtaining multiple detailed quotes, and carefully comparing them, you can ensure you receive a fair price for a safe and compliant installation. Investing in a quality tank and professional installation is crucial for the safety and efficiency of your home's heating system and for protecting the environment.
If you want to read more articles similar to Oil Tank Installation Costs, you can visit the Services category.
