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Trusted by over 500,000 customers for 20+ years
Order online or call
01480 775454
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Trusted by over 500,000 customers for 20+ years
Written by
Jenna Culy
on 03 Oct 2022
and updated on
01 May 2026
Categorised in
Tips and Advice
Heating oil tanks don't last forever, and at some point, they'll need replacing. Whether that may be due to condition, damage, or renovations, you will need an installation.
Depending on the design of the tank, the material it is made from and its thickness, an oil tank needs to be replaced every 15-25 years. In addition to this, installing a tank can only be done by licensed professionals.
The type of oil tank you will need may have an impact on the installation process in terms of the time it takes to install and the cost. Another factor to consider is the location your new oil tank is going to be placed in. Heating oil tanks are typically made from plastic or fabricated steel and are most commonly installed outside; they can be installed inside or underground if they meet OFTEC regulations, although this is uncommon.
Heating oil tanks are available as single-skinned, double-skinned, or integrally bunded. Bunded tanks have a second outer layer that provides extra protection against leaks and environmental damage.
If you decide on a double-skinned or integrally bunded tank, the vents and fittings are attached to the outside of the tank, and there is a gap between the two tanks, providing more protection.
When purchasing a tank, you can buy one independently, but it must meet OFTEC standards. BoilerJuice offers a range of bunded heating oil tanks.
However, since heating oil tanks must be installed by an OFTEC-registered technician or engineer, it’s advisable to seek their guidance when choosing the right type and size of tank for your property.
If you're replacing an existing heating oil tank, a qualified engineer will safely remove the old tank and install a new one. Your current oil-fired appliances can usually remain connected, although a boiler upgrade may be needed to match newer, more efficient systems.
New tanks must be installed in line with regulations - typically at least 1.8m from buildings, windows, or doors and placed on a solid, level base strong enough to support the tank when full.
If you're installing a system in a new-build property, you'll also need to choose a suitable boiler and consider any additional appliances, such as an AGA or a Rayburn.
The process for removing an old heating oil tank and installing a new tank must comply with building regulations, OFTEC's guidelines, and oil storage regulations. Once you have agreed to the cost, the engineer will make sure the following:
Once the engineer and you are happy with the installation, you will be issued an OFTEC CD10 completion report, and the installation will be registered with OFTEC, who will send you a Certificate of Conformity.
Heating oil tanks must be installed by trained engineers in line with OFTEC standards and UK regulations. In many situations, a bunded (double-skinned) tank is required to reduce the risk of oil leaks and environmental damage. This typically applies when:
Installations must also meet fire safety requirements, including safe distances from buildings, flues, and heat sources.
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