Have a problem with your septic tank or cesspit? Baxi recommend adding water (and therefore pressure) via the filling loop. Check out our tool selection guide or chat with a drain brain! There are four boilers in the baxi platinum combi he a range, kw, kw, kw and kw, so whatever your needs, there'll be a boiler capable of meeting your requirements. Marriednotdead: that would involve a lot of body-brushing for many dh's! Here are the rest of the need-to-knows. Request your fast, free quote today!.