You don't have to use your energy provider's boiler cover! Bi-functional electric central heating flow boiler power: - kw. Awesome service quick to respond! thanks! You can pay our engineer direct or call the office to make payment payment is due immediately after works have been conducted. Learn a new word every day delivered to your inbox! Not sure? seek professional help from a drain cleaning company. Service was great and i would highly recommend koegel to anyone if you need.