Cookie policy

What are cookies?

Cookies are small text files that are placed on your computer or mobile device when you browse most websites. They are used by web developers to improve your user experience by including additional functionality, ranging from saving your settings during and between visits to noting your site visit for analytical purposes.

There are two types of cookies:

Session cookies expire as soon you close the browser and are most commonly used to help users navigate the site by storing information on their location and the pages they have visited. An example of this could be a site with a login process; in order for the site to remember that you are logged in a cookie must be stored, otherwise every time you move to a new page you will be logged out.

Persistent or permanent cookies remain on your computer once you have closed the browser down, relying on a time limit for self-deletion. Most of these range from 30 days to 1 year, but it's possible for them to last until 3012. These are most commonly used for personalising a web experience, so that the site "remembers" you from previous visits, or other sites, and can display relevant information
All cookies can be permanently disabled using your browser's security options, although most websites will fail to function correctly without cookies.

For more information on how to disable cookies please consult the About Cookies website.

Cookies used on the Baxi website

Below is a list of the different cookies we use on our website. These cookies are either set by ourselves (Baxi), or from other websites such as Google. Cookies that are set by Baxi are known as first party cookies, whereas cookies set from other websites are known as third party cookies. Unfortunately we cannot guarantee the listing of every cookie set from a third party website, as they can change at any time.

AddThis (__atuvc, bt, bt2, di2, dt, loc, uid, uuid2, sess, uit, um, PHPSESSID, xtc)

AddThis is a popular social sharing tool. These cookies enable the various share links on our pages to connect to popular social media platforms such as Twitter and Facebook. It also allows you to email a friend the page link with accompanying message. (uuid2, sess) is run by AppNexus, a company that provides data and analytics helping businesses buy and sell online advertising. You can automatically Opt-Out from receiving cookies by clicking on the ib.adnxs Opt-Out page


(ARPT, baxiuk_sessionID, ASP.NET_SessionId, X-Mapping-sample, _qca, adiLP, adiS, adiV, adiVi, ki_r, ki_s, ki_t, ki_u, adiCookieCheck, adiErr, _atrfs)

These cookies have been set by Baxi to provide the following functions:

  • ARPT is a load balancing cookie, which helps improve website performance, such as reducing the time it takes to load a new page
  • ASP.NET_SessionId, supports your use of the website, particularly iterative elements such as filling in contact forms


PREF tracks preferences that were set such as selecting a preferred language.
SID, HSID are used for security and helps prevent fraudulent use of login credentials
YSC is set by YouTube on pages with YouTube embedded videos
PREF, NID, SID tracks your preferences so that related content or adverts can be shown

Google Analytics (_utma, _utmb, _utmc, _utmz)

Google Analytics is one of the most popular web analytics packages. Google Analytics uses these cookies to help us look at how many people visit our site, what pages they look at and how long they stay on each page. This information helps us identify ways we can improve your experience of our website.


At present YouTube will set these cookies on pages displaying YouTube hosted videos.

  • VISITOR_INFO1_LIVE attempts to estimate the video speed for a particular YouTube hosted video. YouTube uses this data to identify ways it can help improve your viewing experience by determining the amount of time you need to wait before you can watch the video. It also helps determine the quality of the video you can watch. This cookie can also be used by an Internet Service Provider
  • use_hitbox increments the 'views' counter on the YouTube video
  • PREF tracks your preferences so that related content or adverts can be shown shown within the YouTube video
  • APISID, HSID, SAPISID, SID, SSID, YSC used on pages containing YouTube videos and enable key functionality of YouTube videos
  • YSC is set by YouTube on pages with YouTube embedded videos
  • GEUP is used to limit the amount of times you see an advertisement in addition to delivering adverts that are relevant to your interests
  • LOGIN_INFO is used present login information

Further reading

YouTube Video Speed looks at how YouTube uses the VISITOR_INFO1_LIVE cookie.

Cookies in email marketing

By agreeing to receive email marketing communications from Baxi, you are consenting to the use of cookies. Cookies are used to track the opening of emails and help us to correctly target campaigns.