Justin Broadbent from isoenergy explains what a ground source heat pump is and how it could be used as a solution to make a period property energy efficient.

What's more important - preserving heritage architecture or retrofitting it to high energy efficiency? In our first forum on a Google+ Hangout we discuss some of the issues.

The Panel

Writer and blogger Roger Hunt (who appeared in our 10th podcast)

Writer and Passivhaus consultant Adam Dadeby from Passivhaus Homes (who appeared in our 5th podcast)

Homeowner Ross Atkin (who has recently retrofitted his Victorian house)

Ben Adam-Smith shares an idea he has about using the Internet to communicate the need for incremental lifestyle change as an action to combat climate change. This one-off episode focusses on how you could use content marketing to get your message across. Cesar Abeid from The Construction Industry Podcast is Ben's guest and helps explain how content marketing works.