What product was installed?

(a) British Gas Glow-worm 330 condensing boiler. Replaced hot water cylinder by a larger, better insulated one

(b) Mineral wool (Knauf Supafill) cavity wall insulation

Who was the installation contractor?

(a) British Gas

(b) Mark Insulations Group

Date and cost

June 2006.

(a) £4300

(b) Free thanks to BG had special offer

Has it lived up to its energy saving claims?

Yes.

My gas consumption in 2005 was 22000 kWh, and had been higher previously.  Gas in 2007, first full after installation, was 15600 kWh.  Slightly higher so far in 2008.

Did you have installation problems?

The boiler condensate drain as installed was rather ugly but was replaced at no cost by a less obtrusive one.

Have you had problems in service and did the contractor fix them promptly?

No problems.

Overall would you recommend your project to others?

Definitely.