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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Direct Hot Water Systems

Direct fired gas water heaters

What is a direct fired hot water system, how does it work and what is it used for? Exploring direct fired water heaters and integral gas or oil burners, and their features and benefits.

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How does a calorifier work?

Twin coil calorifiers for indirect heating

Find out how a calorifier, or indirect fired hot water cylinder, works as part of an indirect fired hot water system.

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Temporary boiler plant rooms

Mobile boiler plant rooms can help with refurbishment projects.

Temporary boiler plant rooms can overcome issues when refurbishing old plant to guarantee an uninterrupted heating and hot water supply.

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Stratification in water heaters

Stratification management in a water heater

Stratification in water heaters can be problematic. We explain what causes it and how it can be avoided to prevent the growth of Legionella bacteria.

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Hydraulic separation in heating systems

A plate heat exchanger can be used to hydraulically separate a heating system.

When it comes to refurbishments, it is important to protect new equipment. This can be done by hydraulically separating the primary and secondary circuit. We look at different methods to achieve this.

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Medium Combustion Plant Directive in commercial heating

Large commercial boiler installations fall under the Medium Combustion Plant Directive.

The Medium Combustion Plant Directive came into force in 2018 and regulates sulphur oxide and nitrogen oxide emissisions as well as dust into the air from combustion plants. In this article, we look at the MCPD specifically in reference to commercial boiler plants.

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NOx emissions from commercial boilers

NOx emissions are the 'hot topic' of the industry. In this article, we investigate why they are a reason for concern, how they are generated and what we can do to reduce them.

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Efficient heating system design with built-in boiler controls

Correct boiler control setup helps to improve heating system efficiency.

An often overlooked aspect of energy efficiency is correct monitoring of external factors which influence the temperature in a building, understanding the usage of premises and how to set up boiler controls correctly. We look how these can assist to set up an efficient heating system.

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Cleaner Heat Cashback

The Government has introduced a commercial boiler scrappage scheme for London to cut carbon and NOx emissions in the capital to improve air quality and energy efficiency in non-domestic buildings. We take a look at the criteria for a replacement, how the application works and how you can become a Hamworthy-approved installer.

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Driving condensing boiler efficiency

Who's driving efficiency improvements?

In 2015, we saw the introduction of the Energy-related Products Directive. What is the aim of this legislation and what impact does it have on the commercial heating and hot water market?

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