Homeowners and service hirers can find out who they can hire during the interim. Pour the baking soda into the drain and let it sit for a few minutes, then pour the vinegar in with a cup of hot (not boiling) water. Strysen heating ltd, registered in england & wales no 8130178 registered office: century house, 31 gate lane, sutton coldfield, west midlands, b73 5tr. We can offer a complete solution whether you are considering installing a new boiler to reduce your.