The table below shows the average price of baxi's cheapest and most expensive combi and system boilers. Please read our full terms and conditions below before you apply. New boilers save money! a new a+ rated boiler could save you up to £* a year! Maximum weight for packages shipped to ak, hi or gu is lbs. What is the best way to find a new plumber? These are the pipes which serve multiple properties and which were either laid by or have.