The staff at monkey wrench is a friendly bunch that are here to make your life easier! We can provide you with video records of your drains, trace unknown drainage channels and conduct reactive and planned maintainence. Combi boilers: is a combi boiler the right boiler for you? Removing and cleaning the drain stopper and p-trap or s-trap will solve many drainage problems in sinks see. Our technicians are highly trained and experts in hvac.