We are hoping to get cavity wall insulation before next winter and were expecting to pay for it. However, there seems to be all sorts of free deals and grants out there, some dependant on circumstances, some not, some requiring you to be with a certain provider etc etc. This has all confused me somewhat as I do not want to pay more than I have to. There seems to be many websites where you can sign up for free loft and cavity wall insulation but it smacks a bit of all the companies offering PPI refunds, there must be something in it for them. Also, what is the quality of the work with the free deals? My energy provider is Eon and they do not appear to do any free deals, just a customer discount. Any guidance would be appreciated.