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Ariston Boilers and Water Heaters

Updated: Sep 5, 2018
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Ariston manufactures and sells home and water heating systems designed for the UK market. Ariston is headquartered in the UK and is part of the Ariston Thermo Group, which had sales of approximately $1.63 billion in 2016.

Corporate History

Aristide Merloni established his company (Merloni Industries) in Italy in 1930. In the 1960s, Merloni Industries formed two groups to service specific markets. One of those groups, MTS, focused on heating and sanitation products. In the 1960's Ariston began manufacturing water heaters and began making boilers in the 1980's. Through the 1990's and into the 21st century MTS aquired several companies and brands, and in 2009 MTS Group changed its name to Ariston Thermo Group. Ariston moved to a new UK headquarters in 2014.

Product Lines

Ariston makes wall-hung combi boilers, system boilers, heat-only boilers and boiler accessories. They also make wall-hung gas and electric water heaters, and tank-style water heaters produced with both glass and stainless steel lining. Ariston's tank-style water heaters include heat pump and solar compatible water heaters. They also market roof- and ground-mounted solar collectors and all components needed for a solar thermal system.

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Contacting ARISTON

Ariston Thermo Group
Artisan Building, Hillbottom Road
High Wycombe, HP12 4HJ

Phone: 0333 240 8777


The standard guarantee on Ariston boilers ranges from 2 to 5 years. Tank-style water heaters have a 25-year tank guarantee and a 2-year guarantee on electrical parts. A 5-year tank guarantee and 2-year guarantee on electrical parts is provided for heat pump water heaters. Extended warranties are available for an additional fee. 

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