Give us a call on 01928 531 870 Head office or 0203 903 9030 Rinnai London


Welcome to our new website, h₂otechnology. This website has been brought to you by Rinnai UK Limited who are an acknowledged global leader in the manufacturer of gas water heating products.

We have recognised at Rinnai UK that there is a wealth of knowledge and information within the hot water market place, and adding to this is the ever growing build up of legislation which affects the selection and installation of water heating products within our domestic and commercial lifestyles.

Just think for a moment about the number of times a day that we all need useable hot water... in our houses, and places of work such as offices, factories, hotels, shopping centres, and then there are our hospitals with their ever present need for hygiene, not to forget our schools and leisure centres. Everywhere, 24 hours a day, our modern living requires hot water.

So, here in one location, Rinnai UK have provided you, the customer, with this information portal designed as the resource for those involved in the usage, provision and installation of hot water. 

You will find a constantly expanding and evolving library of knowledge and news about the innovation and legislation that affects the way we all look at heating our hot water.

It will allow you to gain and obtain all the details and information you may need to make informed decisions about the provision of your hot water.

Our frequently asked questions page contains answers to most common questions, however, there are many questions arising within the water heating market on a daily basis.

We at Rinnai encourage you to ask us about any questions that you may have, and our technical team will do all we can to ensure you receive an objective and informed answer.

We trust that you find this information portal of great use,

Yours Sincerely

Mr Tony Gittings