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Built to perform

Size-it is the UK's leading professional water heater sizing tool, and is now more user-friendly and informative than ever before.

Size-it will recommends the most suitable Andrews Water Heaters product for your job, along with a detailed summary report and all the technical and up-to-the-minute legislative information required to complete a hot water schedule.


Try Size-it today


The benefits of registering for Size-it include:

Benefits of size itThe UK's original and best sizing tool
Size-it was the first sizing tool launched by a commercial UK water heater company and we're proud to say it's still the best.



Benefits of size itDesigned specifically for the UK market
As Size-it is designed specifically for the UK market, you'll find the property types, regulations and advice are all relevant to the specific needs of building services and public health.



Benefits of size itAccessible on any device, anywhere, anytime
Size-it is now available online and is compatible with all devices and operating systems including Apple, Android and Windows. So, whether you're at your desk, on site or in a meeting, Size-it can be accessed through any of your devices.


Benefits of size itUp-to-date legislation
When UK legislation changes, Size-it will be updated too, so you can rest assured that the information you receive is always up-to-date and meets UK requirements.



Benefits of size itPersonalised and responsive
Tailor the sizing to your exact property requirements and Size-it will match the product and provide all the information, design tools and legislative guidance you need. You can even see how small changes affect the results.



Benefits of size it User friendly and intuitive
Our instructions, advice and simple navigation ensure Size-it is quick, easy and simple to use from finding the right water heater through to requesting quotes and arranging site visits.



Benefits of size it Manage a portfolio of projects
With Size-it you can manage your whole portfolio of projects. You'll have all the information you need in one place and you can even save projects to use as templates for future jobs.



Benefits of size itUnrivalled supporting content
Easily accessible and up-to-date advice, product information and links to technical sheets, including CAD, BIM and energy labels.



Benefits of size itAdditional efficiency credits
You will gain two additional heating efficiency credits just for using our Size-it tool to specify Andrews water heaters for your job.



Benefits of size it40 years experience
Our Size-it tool benefits from our 40 year experience as the leading supplier of gas-fired commercial water heaters in the UK. If you wish to discuss your recommendations you can contact your local Area Sales Manager.


If you wish to discuss your recommendations you can contact your local Area Sales Manager.

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