Radon mitigation systems: is your home safe? Householders are responsible for their private drains. Need a drain unblocked, or have a problem with your drain? A good example is baxi’s investment in the next generation of micro chp (combined heat and power) technologies, some of which are undergoing extensive trials these promise not only to be more efficient, they’re also kinder to the environment. When i called you and you were honest and advised me it would be - hours.