This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Heating Calculator


This plugin adds a sidebar widget that displays a heating calculator, you input the details of the location that you require heating for and the calculator recommends the approptiate heating unit(s).

Version 1.0

First release.


  1. Unpack the *.zip file and extract the /heating-calc/ folder and the files.
  2. Using an FTP program, upload the full /heating-calc/ folder to your WordPress plugins directory (Example: /wp-content/plugins).
  3. Go to Plugins > Installed and activate the plugin.
  4. Go to Appearance > Widgets, add the widget to a sidebar and save.


The plugin is great but can I change the colour to fix in better with my WordPress theme?

Yes you can. Simply change the background image heating-calc/images/heating-calc.jpg and the colour of container in heating-calc/styles/heating-calc.css.

Contributors & Developers

“Heating Calculator” is open source software. The following people have contributed to this plugin.

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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.