COMMERCIAL SUPPLEMENT


BOILER Hamworthy Heating


Address: National Avenue, Hull, East Yorkshire, HU5 4JN Contact: sales@hamworthy-heating.com, 01202 662500, Web: www.hamworthy-heating.com


Product name - fuel type - boiler type - wall hung or floor standing - output range - maxium gross efficiency - NOx emissions - size (w,h,d)


• Modumax mk4 – Natural Gas, LPG – High efficiency, pre-mix, condensing, fully modulating, stainless steel – Floor standing – 97 to 762kW – 95% – 40mg/kWh – 680 x 2084 x 1128


• Stratton mk3 – Natural Gas or LPG – High efficiency, pre-mix, condensing, fully modulating, stainless steel – Wall hung – 40 to 150kW – 95% – max 40mg/kWh – 487 x 895 x 668


• Upton – Natural Gas, LPG – Pre-mix, condensing, fully modulating, aluminium – Floor standing – 100 to 1050kW – 95% – max 40mg/kWh – 700 x 2017 x 1220


• Varmax mk2– Natural gas, LPG (up to 320kW) – High efficiency, pre-mix, condensing, fully modulating, stainless steel – Floor standing – 120 to 600kW – 96% – Max 55mg/kWh – 1161 x 2016 x 1588


CaseStudy A


s part of its ongoing investment into improving efficiency and sustainability across its campus, the University of Huddersfield recently upgraded its boiler plant at two locations. Each building had different operational requirements and plant


room constraints, with limited access restricting the size and type of equipment that could be installed. The university therefore needed a solution that could improve energy efficiency while fitting within the existing spaces. Following a detailed site visit by Hamworthy, it was decided that Modumax mk4 modular boilers would provide the ideal solution. The chosen system includes a two-stack configuration with a total output of 294kW for one plantroom, together with a three stack of 762kW for the other. An advantage of choosing this system was each boiler could be dismantled into individual sections. This allowed the modules to be safely transported through the restricted access routes and assembled on site. Once in position, the modules were stacked vertically to make the most of floor space. The modular design also meant the boilers could be installed with minimal modifications to the existing buildings. Designed to deliver high outputs from a compact footprint, Modumax mk4


boilers combine floor-standing performance with exceptional installation flexibility. The modular configuration also delivers enhanced operational performance. With each module capable of operating independently, the


system can closely match heating demand as building loads fluctuate, providing up to 5:1 turndown per module. This improves seasonal efficiency, reduces unnecessary energy consumption and helps lower operating costs. Building on the success of its popular Modumax range, the latest generation of mk4 boilers retain the core features that have made them the leading floor-standing commercial boiler range, while introducing a series of refinements. These include a reduced rear flue height to better suit low-height plantrooms, and a more aesthetically pleasing design. The range has also been simplified to support easier fuel conversion between natural gas


and propane via an optional conversion kit supplied at point of order. To assist facilities teams, mk4 boilers also feature a user-friendly colour touchscreen interface that simplifies day-to-day operation and maintenance. Following the successful installation, the University of Huddersfield


now benefits from an efficient heating system that supports its long-term sustainability objectives.


• Purewell Variheat mk2 – Natural Gas, LPG (Channel Islands only) – High efficiency, pre-mix, condensing, fully modulating, cast iron – Floor standing – 70 to 180kW – 96% – Max 40mg/kWh – 534 (w) x 1286 (h) x 865mm (d)


Installation aids available


• Skid-mounting kits • Pipe kits • Flue kits


Controls available


• Weather compensation • Cascade control • Sequencers • Integrating controls


Other products available


• Thermal storage vessels / cylinders • Air source heat pumps • Gas fired water heaters


Brief company history Country of origin: UK Founded in: 1914


Established in the UK in: 1914 Number of employees in the UK: 63


Unique selling points Hamworthy Heating is a British commercial heating manufacturer. With an extensive range of the latest commercial boilers, hot water heaters and air source heat pumps, we can offer advice and help to ensure you specify the right solution for your commercial heating needs. Our technical experts and their impressive industry knowledge make a real difference to your projects. From help with sizing hot water to replacing commercial boilers, and everything you need to know about heat pumps, legislation and technology - you’ll find us friendly, knowledgeable and easy to deal with, every step of the way. We know that one size doesn’t fit all so we’ll make sure that we understand your needs and requirements to fully support you at each stage of your commercial project.


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September 2026 21


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