Here you can explore our articles about some of the key topics in commercial heating, hot water, legislation and energy efficiency.


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No flow boilers – application and installation

Varmax no flow boiler

No flow boilers don’t depend on the system circuit flow for safe operation. But how does a no flow boiler work? Understand the application and installation of no flow boilers for cost effective heating system design.

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Primary circuit or boiler shunt pumps in commercial heating

Individual boiler shunt pumps installed with Hamworthy Wessex ModuMax boilers at the Langham Hotel in London.

A question we get asked a lot at our CPD seminars is: ‘Which is best - a boiler shunt pump or primary circulation pump?’ There's no correct method, as long as the minimum flow is always maintained. And it will always depend on the project. In this article, we’ll look at the different pump options and their pros and cons.

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