Cookies on

By continuing to use you accept the use of cookies.

Cookie Politicy uses cookies.

A cookie is a text file that is saved on your computer or mobile device, so that the website can identify you the next time you visit

Cookies are small files that cannot spread computer viruses or in other ways cause damage.

The purpose of cookies is to help websites identify users in order to provide them with the best possible experience of the site. uses the following types of cookies:

Session cookies:

A session cookie identifies you as a user during the time that you spend on the site. This cookie is deleted when you close your browser.

Analytics Cookies: uses cookies from Google Analytics. Google Analytics is a tool for measuring website traffic, which Rationel uses in order to collect usage statistics about, which pages and features are accessed by users on As a user you can opt out of Google Analytics cookies here:

Cookie Accept:

When you accept the use of cookies (either by clicking accept or by continuing to use the site), a cookie is saved with this information. Thereby you will not be presented with the cookie policy the next time you visit the site. This cookie is saved for one year.

Can I avoid Cookies completely?

Cookies can be completely removed from your computer and disabled in your browser. How this is done depends on which browser you use.

Five Energy Guidelines

Whether you refurbish or build from new, there is inspiration in 'the five energy guidelines' on how to achieve an energy-saving solution.

Low-energy windows can influence your energy bill significantly 

Approximately 30% of all energy used to heat older dwellings disappears through closed doors and windows. This means that the windows are a great place to start when you wish to cut down your energy bill.

Think green - it's worthwhile

Most home owners change the windows as the first step when they want to reduce their energy consumption. About 30% of the energy used for heating of older homes is lost through closed windows. 

That is why new and modern windows are one of the best investments when a considerable energy saving must be made for a manageable amount of money.

Yearly saving:

1.050 kg CO2
395 litres of oil
15% on your heating bill per year

Other advantages:

  • Better indoor climate
  • Less down draught
  • Less draught
  • Better ventilation possibilities
  • New windows that match the building's style
  • Improved security performance
  • Less external noise

The calculations are based on a 150m2 detached home, when changing the windows from old double-glazed windows to Rationel double-glazed energy windows.

Five green guidelines that help you achieve energy-saving solutions

  • Rationel Vinduer Ltd.
  • 2 Bridgecourt Office Park
  • Walkinstown Avenue
  • Dublin 12
  • Phone 1800 292929
  • Legal disclaimer