10/9/2026
Harlequin Launches New CGRP ‘Super-Sub’ range
Harlequin Launches New GRP “Super-Subs” Range Harlequin is pleased to announce the launch of our new GRP Super-Subs range, bringing together dependable wastewater treatment
18/8/2026
Harlequin Launches New 1230SSL Oil Tank
Harlequin Launches New 1230SSL Oil Tank Harlequin are pleased to introduce the new 1230SSL Oil Tank, the latest addition to our established range of domestic
25/6/2026
Harlequin Summer Shows 2026: Thank You for Visiting Us
Thank You for Visiting Us at This Year’s Summer Shows We would like to extend a sincere thank you to everyone who took the time
3/6/2026
Harlequin Launches 3D Tank Display Series Across Trade Counter Locations
We are pleased to introduce a new series of 3D tank displays, now appearing at selected trade counter locations. Designed to bring Harlequin oil storage
14/5/2026
Mental Health Awareness Week
Supporting Wellbeing During Mental Health Awareness Week At Harlequin, we recognise the importance of supporting wellbeing in the workplace and creating a positive environment where
1/5/2026
Manufacturing Month
Manufacturing Month NI 2026 is here, and at Harlequin Manufacturing, we’re proud to celebrate the innovation, talent and ambition that continues to power Northern Ireland’s
3/3/2026
Think Before You Flush.
Your Sewage Treatment Plant Is a Living System A domestic sewage treatment plant doesn’t just store waste , it treats it. Inside every system, naturally
17/2/2026
16,000 Responses Submitted to Government Heating Consultation
The government’s Alternative Clean Heating consultation has now closed, with over 16,000 responses submitted from oil-heated households and industry professionals across the UK. The scale
20/1/2026
Oil-Heated Households Encouraged to Respond to Government Heating Consultation
Oil-Heated Households Encouraged to Respond to Government Heating Consultation Thousands of oil-heated households across the UK have already responded to a government consultation examining the
27/10/2025
Step by Step instructions- Harlequin Smart Gauge
Click on the Link below to watch a step by step guide on installing and activating the Harlequin smart Gauge app. Step by Step Instructions
25/9/2025
New Rainwater Harvesting Systems Product Update
We’re excited to share the launch of our new Rainwater Harvesting Systems, the latest addition to Harlequin’s product range. 🌍💧 Designed to make sustainable water
1/9/2025
Harlequin launches New Smart Gauge Technology to Simplify Oil Tank Monitoring
From September, Harlequin will equip its best selling ITE and ITT heating oil tank ranges with a pre installed smart gauge – giving installers a