While numerically correct, your answer has the wrong sign.
In the combustion of methane example, the enthalpy change is negative because heat is being released by the system. That is incorrect. If we took 1 mol of liquid water and allowed it to evaporate, 44 kJ would be absorbed.
Studies of thermochemistry can be very useful in getting reliable information for making these important choices. The reaction is exothermic and thus the sign of the enthalpy change is negative.
Do we use gas, oil, electricity, wood? What is the enthalpy change when 3. Since the reaction isn't highly exothermic like the combustion of CH4we find it hard to associate with a release of energy.