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Heat transfer to Ravensbourne

I have a Smartvent positive pressure system instaled in my house in Ravensbourne. Would like to upgrade with a Smartvent Heat Transfer system kit and would need that supplied and installed. Its a 3 bedroom house with outlets four 3 rooms plus an outlet into the lounge ehich got a wood burner. I would like to get a quote for a start and go from there... Cheers, Rita