If you have undertaken any repairs or maintenance of the system, go around and check the work to ensure there are no leaks. A plunger and and bit of arm action! Includes annual boiler service & safety check). Do you love stahl’s excellent service? Call us today for more details or to schedule service. Watch out for frozen pipes this winter! Clean and comfortable removal of obstructions in kitchen, bath, toilets or drainage openings with drain cleaning spiral. Best of luck clearing.