When it comes to circulators Trebles holds the most extensive range in the market. With 1000’s of pumps sat in stock ready to dispatch same day. Trebles only stocks the industries best brands with ranges including Grundfos, Wilo and Lowara to name just a few.

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Energy Effiencient

All Models Meet Latest Environmental Standards

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Huge Range

From the Leading Brands – Including: Grundfos, Wilo & Lowara

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Technical Expertise

The Team will Support you in Future Proofing Your Selection

Covering both central heating pumps and hot water circulators, Trebles has a range of circulators unrivalled by any other.

A circulator pump or circulating pump is a specific type of pump used to circulate gases, liquids, or slurries in a closed circuit. They are commonly found circulating water in a hydronic heating or cooling system.

Circulator pumps as used in hydronic systems are usually electrically powered centrifugal pumps. As used in homes, they are often small, sealed, and rated at a fraction of a horsepower, but in commercial applications they range in size up to many horsepower and the electric motor is usually separated from the pump body by some form of mechanical coupling. The sealed units used in home applications often have the motor rotor, pump impeller, and support bearings combined and sealed within the water circuit. This avoids one of the principal challenges faced by the larger, two-part pumps: maintaining a water-tight seal at the point where the pump drive shaft enters the pump body.

Small- to medium-sized circulator pumps are usually supported entirely by the pipe flanges that join them to the rest of the hydronic plumbing. Large pumps are usually pad-mounted. – However Trebles offers and can advise on multiple attachment types.

Pumps that are used solely for closed hydronic systems can be made with cast iron components as the water in the loop will either become de-oxygenated or be treated with chemicals to inhibit corrosion. But pumps that have a steady stream of oxygenated, potable water flowing through them must be made of more expensive materials such as bronze.

To discover more about the Trebles range of pumps either browse below or contact one of the Trebles technical team who will be happy to help.

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Domestic Heating Circulator

Domestic Circulators

Found in all homes, the Trebles domestic circulator ranges from Grundfos, Lowara, Wilo and Stuart Turner are all tried and tested. Many units cross from domestic application into ‘light commercial’ use – often found in new build developments.

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Commercial Heating Circulator

Commercial Circulators

Designed for industry, these ‘harder working’ circulators are designed with both longevity and serviceability in mind. As one of Trebles fastest selling ranges, Trebles hold arguably more stock of these lines than any other UK provider.

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Knowledgeable, flexible, quick and competitive pricing.