Let's say you start with liter (roughly kilogram, . lbs) of cold water at about °c (°f) and you want to raise it °c to its boiling point (°c or °f) the amount of energy you need is . × grams × degrees = , joules or kj. Request an appointment for service today! Dedicated to helping your business ». Do you need help now? call () -! Need a quote? get in touch with us and we'd be happy to help. Goshen plumbing & heating is here to make sure that your heating systems.