Smart controls can help with that in fact, you could increase your boiler’s efficiency by an extra %! pretty nifty, eh? Registered office address: baxi heating uk limited, brooks house, coventry road, warwick, united kingdom, cv ll. Is a plumber required to be insured and bonded? An employee shows a samsung electronics' gear s classic during korea electronics show in seoul, south korea. Two elterim kw electric boilers.