The answer to 'how much to fix water heater in Illinois' is that the cost can vary significantly depending on several factors. Generally, the typical range for water heater repair in Illinois is between $200 and $800, with the average cost being around $500.
The main factors that influence the cost include the type and size of the water heater, the extent of the repair needed, the location and accessibility of the unit, and the labor rates of the plumbing contractor. Older or larger water heaters, as well as more complex repairs, tend to be on the higher end of the price range. It's important to get quotes from local plumbers to get an accurate estimate for your specific situation.