Wastewater Treatment Systems
Cost effective, super quiet effluent sewage treatment solutions for the treatment of domestic wastewater
Oil Tanks
Durable & Stable domestic and commercial heating oil tanks to suit all spaces.
Hot Water Systems
Designed specifically for flats and apartments!
Pump Stations
The latest addition to our range of innovative storage tanks & systems.
Where customers have been at the heart of our business for 40 years
Harlequin is a leading manufacturer of innovative polyethylene storage tanks and systems. Headquartered in Northern Ireland, UK, it has a 40-year heritage and exports to over 20 countries internationally. Harlequin Manufacturing has developed a diverse and innovative product range and is one of the fastest growing manufacturing companies in Northern Ireland with over 90 employees.
26/11/2021
Harlequin moves ahead with significant expansion plan
Focus on people, technology, and facilities We have enjoyed significant growth in the last 40 years we’ve been in the business and are continuing to
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9/11/2021
Harlequin celebrates 40 years of excellence
Harlequin (then Clarehill Plastics) was founded by the formidable Mrs May Gracey in 1981 to pioneer the manufacture and supply of rotationally moulded plastic products
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3/11/2021
CAP6&9 back in action
Relaunched with improvements We have now relaunched our CAP6 & CAP9 compact sewage treatment plants. These continuous aeration plants operate using a unique bio-media system and
READ ARTICLEWhat our customers say
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As a pleased Harlequin supplier, 24-7 Plumbing & Heating can only give a 5 star review, the service given is second to none, with amazing delivery and customer relations. We receive amazing support from our Product manager Jon Jones who always solves a problem or query in one call. Fantastic company with a fantastic dependable range of products.
Rachel Wiltshire
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I just wanted to let you know what a great customer service experience we had from Dan Berry today who covers our area. We had one of your treatment plants installed and weren’t convinced it was operating as it should. Dan reassured me on the phone, visited as soon as he was able and sorted the problem. He is super knowledgeable and a credit to your organisation. Customer service as it should be.
Katrina
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Great company always willing to help us out. Prompt deliveries and our RSM Scott Lorraine is always available on the phone to assist in any way he can.
Chris Vertigan
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Excellent pricing & service, we are always kept up to date with delivery schedules by the sales team. I would highly recommend Harlequin.
Dan McGowan
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Fantastic Products from a Great Team! As a distributer of Harlequin products we have the pleasure of dealing with these guys on a regular basis & have never had anything other than a first-class service.
Colin Green
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Top top top customer service from this company – Aaron M to be exact 🙂 Great cylinders.
Olivia Clay
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I decided to give HeatStream Electric a go after Scott Lorraine recommended it. I am mighty pleased with the product as, with it, I am able to provide my family with plenty of mains pressure hot water. I was able to upgrade from my old vented low pressure system to the HeatStream Electric quite easily. It does away with all the problems of a traditional unvented cylinder. Would highly recommend.
Steve Love, City Plumbing
