Company was recommended by a family member the company having replaced his boiler last year. Arranged for a quote to remove a Baxi back boiler from behind our fire, remove the cold water tanks and immersion cylinder, then install the new condenser boiler in the airing cupboard upstairs. Great British Heating did the same work British Gas had quoted but for £1100 less. No easy task due to the main gas supply is on the opposite wall to the new boiler. Only took a day and a half. Fabulous work ethic by Ross, David and Simon. Ross came back the 2nd day to final fix and connect. What a difference. Would highly recommend the company to anyone. Professional approach and speed of work was excellent. On time as promised bearing in mind the awful weather was so welcome. Well done and thank you all.