1,100 litres Heating Oil Tank - Harlequin 1100SL Slimline Single Skin

1,100 litres Heating Oil Tank - Harlequin 1100SL Slimline Single Skin

Manufactured in the UK, this Harlequin 1100SL Slimline Plastic Single Skin Oil Tank is approved by the experts at The Oil Firing Technical Association and is EN 13341 compliant - a legal requirement for all plastic heating oil tanks sold today. Suitable for applications where a Bunded Tank is not required, or for installation within a suitably bunded area. Shop and buy Harlequin Oil Tanks online today at Fuel Tank Store.

In stock
£942.00 £785.00
Direct to you
  • DELIVERY TIME: Please allow up to 10 days for delivery to locations in mainland Great Britain and Northern Ireland. Deliveries to Channel Islands, Isle of Man and UK offshore locations may take longer.

    Regretfully, we are currently unable to supply this product to our customers in the Republic of Ireland. We apologise for any inconvenience this may cause.
  • FREE UK TAIL LIFT DELIVERY to most addresses in mainland Great Britain and Northern Ireland. Delivery to offshore areas at additional cost - postal areas GY2, HS, JE, IM, IV55-IV56, KA27-KA28, KW15-17, PA41-98, PH41-50, PO30-PO41 and ZE. Any delivery surcharge will be applied at check out and before payment. Regretfully, we are currently unable to deliver to Alderney, Herm, Rathlin or Sark.

    FREE REPUBLIC OF IRELAND DELIVERY to all onshore addresses. Call us on +353(0)1 526 8642 for payment and to confirm product delivery arrangements. Please note that regretfully, we are unable to deliver to offshore locations in the Republic of Ireland. All deliveries are subject to product and service availability.
  • INTERNATIONAL DELIVERY Please call us on +44(0)1789 632 151 or e-mail hello@fueltank.store to confirm product availability, specification and carriage cost.
    All deliveries are subject to product and service availability.

Harlequin 1100SL Slimline 1,100 litres Plastic Single Skin Oil Tank

This British made 1,040 litres capacity Slimline Single Skin Plastic Oil Tank from Harlequin is a favourite with customers who wish to store more oil in less space. OFTEC approved and EN 13341 compliant, Harlequin’s 1100SL is ideal for the small number of domestic Heating Oil storage installations where a Bunded Tank isn’t required.

Standard Specification

A 1,040 litres capacity Single Skin Plastic Slimline Heating Oil Tank from Harlequin Manufacturing supplied with:

  • 1” BSP Bottom Outlet;
  • 4” Lockable Inspection Point;
  • 2” BSP Fill Point;
  • Vent;
  • 32mm Contents Gauge Fitting Point.

Please note this tank is supplied without fittings. An Apollo Oil Tank Contents Gauge and Bottom Outlet Fitting Kit can be purchased separately if required. 

Tank Approvals

  • OFCERT (OFS T100) licensed;
  • EN 13341 compliant.


This Harlequin Single Skin Oil Storage Tank is approved for the storage of Agricultural Fuel Oil, Diesel (DERV), Heating Oil, Kerosene and Paraffin, when connected to a fixed, combustion appliance e.g. oil-fired boiler, cooker etc.

An Environmental Risk Assessment must be completed prior to the installation of any Single Skin Heating Oil Tank. The Risk Assessment should be completed only by a suitably competent person and recorded and retained for future reference. 

Please note Harlequin Single Skin Oil Tanks are unsuitable for use with gravity fed, fuel delivery kits, incorporating a flexible hose and trigger nozzle.


Supplied complete with a 2-year conditional, manufacturer backed warranty against material, manufacturing and design defect.

Important Information

Please note the accompanying product photograph shows a Harlequin 1100SL Slimline Heating Oil Tank fitted with an Apollo electronic oil tank monitor. This item is not supplied as standard, but can be supplied separately upon request and at additional cost.

More Information
Brand Harlequin Manufacturing
Model Range Harlequin Single Skin Oil Tanks
SKU 1100SL
Manufacturer's Reference 1100SL
FTS Reference HQ-01100SL
AKA Codes HQ 419240 1100SL 1100SLA 1100SL/A B00VAJBAUO 1100SL-3980
Installation Aboveground
Material Plastic
UV Stabilised Yes
Construction Single Skin
CE Marked Yes
EN 13341 Compliant Yes
OFCERT Licensed Yes
OFCERT License No. 0644049604
Nominal Capacity 1040 litres
Nominal Capacity (Imperial) 228 gallons
Length 165 cm
Width 69 cm
Height 144 cm
Weight 62 kgs
Suitable For Agricultural Fuel Oil, Diesel (DERV), Gas Oil, Heating Oil, Kerosene
Fill Point Diameter 2" BSP
Lockable Access Yes
Lock Supplied No
Outlet Position Bottom Outlet
Outlet Diameter 1" BSP
Contents Gauge No
Bund Warning Alarm No
Interstitial Leak Detection No
Overfill Prevention No
Tank Fitting Kit No
Warranty 2 Years
Actual Capacity (Imperial Gallons) 240
Actual Capacity (Litres) 1095

General Information

All products must be installed and maintained in accordance with supplied instructions and prevailing statutory requirements. Failure to comply with these requirements will invalidate any warranty supplied. Additionally:

  • Fuel Oil Storage Tanks All static fuel oil storage tanks must be installed and maintained by a suitably competent person e.g. a technician registered with the Oil Firing Technical Association (OFTEC);

  • Single Skin Heating Oil Tanks Single Skin Tanks are suitable only for the storage of Heating Oil at premises where a Bunded Tank is not required, or for installation within a suitably bunded area. Before installing any Single Skin Heating Oil Tank, a risk assessment must be completed by a suitably competent person e.g. a technician registered with the Oil Firing Technical Association (OFTEC);

  • Underground Heating Oil Tanks Before installing any Underground Heating Oil Tank, guidance must first be sought from your local Building Control Department. In some areas, it is not permissible to install a Heating Oil Tank belowground. Please note Aboveground Single Skin and Bunded Storage Tanks are unsuitable for belowground installation;

  • Plastic Storage Tanks All plastic storage tanks must be placed upon a flat, level, base which supports the underside of the tank in its entirety and extends a minimum of 300mm beyond the widest points of the tank. The base must be constructed from fire resistant materials and be capable of supporting the weight of the tank and its contents when fully laden;

  • Non-Potable Water Tanks Non-Potable Water Tanks are unsuitable for connection to the public water supply and the storage of water intended for human consumption.

Electrical Safety

Where applicable, all mains (230v AC) electrical connections should only be completed and periodically inspected by a suitably qualified electrician in accordance with prevailing statutory requirements. Mains electrical connections must incorporate a Residual Current Device (RCD) or similar protection to protect against the risk of electric shock.

Queries? Questions?

You can call us in the UK on 01789 632 151 and in the Republic of Ireland, you can call us on 01 5268 642. We’re open from 9am to 5pm weekdays – Bank and Public Holidays excluded. You can also e-mail hello@fueltank.store

Damaged and Defective Products

We work closely with our manufacturing partners to ensure all our deliveries arrive with you in tip-top condition. However, very occasionally things can and sometimes do go wrong. If you receive a product you’re not happy with, please contact us as soon as possible.

Unwanted Products

We recognise that sometimes we all order products and then change our mind. So you can contact us within 14 days of receiving your completed order to let us know you wish to return any product we have supplied to you. The only exceptions are bespoke and made-to-order products. Thereafter, you have a further 14 days to return unwanted product to us. All returned items must be unused, undamaged and suitable for resale. We recommend you ensure returned items are adequately protected by insurance. Subject to returned products being undamaged and fit for resale, we will refund your purchase price within 5 working days of returned product(s) being received by us.

Please be aware that larger items (e.g. tanks) can be expensive, difficult and awkward to return. We recommend taking care to ensure you have ordered the correct product. If you’re unsure as to whether you’re ordering the correct product, you’re very welcome to contact our Customer Support Team, before placing your order.

Bespoke & Made-To-Order Products

Regretfully we are unable to accept returns of bespoke and made-to-order products, unless damaged or defective. To confirm whether a product is bespoke or made-to-order, please refer to the Product Details section.

Contact Us

Wish to return a product or need to notify us of a damaged or defective product? You can call us in the UK, Channel Islands and Isle of Man on 01789 632 151. In the Republic of Ireland, you can call us on 01 5268 642. You’re also welcome to email hello@fueltank.store. Our offices are open 9am to 5pm weekdays.

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