Sign up for energy advice, special offers and more. I just use the vinegar and baking soda and it worked immediately. If you've new reliable kit, saving monthly to build a cash fund to pay with may be cheaper. Best boiler prices from your local & national providers. We started noticing an uptick in service calls for baxi boilers back in 2005 astonishingly, in calgary’s building boom after the 1980s, some homebuilders.