Water Heater Installation in Chicago, IL
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Cook County winters put real demand on a water heater
Winter nights here average 20°F from December through February, and homes need heat October through May, eight months of the year. A water heater is working through all of that, not just the coldest week.
Power is part of the picture too. In 2024, 16% of Illinois households lost power for 24 hours or more at some point, and the region has logged 20 winter storms and 548 damaging wind events over the past ten years. Whatever size and type you choose, it has to meet a federal efficiency minimum that scales with the tank's rated volume, so the right number for your household is not the same as the one next door.
- 20°F
- the average winter night, and colder incoming water means longer heating
- 8 months
- October through May, the months homes here need heat
- 16%
- of Illinois households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
NOAA nClimDiv, 1991–2020 normals
A heat pump water heater would save about $360 a year to run in Illinois compared with an electric water heater.
Estimates for a typical Illinois home, from EIA household energy data and Illinois fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Age is the first thing to check. Once a tank water heater passes 10 years, it's old enough that the tank itself can fail, and a failed tank means water on your floor, not just cold showers. Rust colored water, rust at the base or the inlet, or water pooling underneath are signs the tank is going, not something to wait out. If it's still running fine but getting close to that age, replacing it on your schedule beats replacing it on an emergency call after it leaks.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on whether tankless is better in general. A tankless unit heats water as it flows through rather than storing it, so you get hot water for as long as you run it instead of until a tank runs out. It won't fit into the space a tank occupied without changes to venting and gas or electric supply, since it works on a different principle. A contractor can look at your gas line, venting, and where the unit would go and tell you what switching actually involves in your house.
- What changes when you install a tankless water heater?
- The unit itself is much smaller and mounts on a wall instead of taking up floor space. Because it heats water on demand instead of storing it, it usually needs a larger gas line or a dedicated electric circuit than the tank it replaces, and it needs its own venting, run to the outside. None of this is a swap of one box for another in the same spot. A contractor can tell you what your gas line, electrical panel, and venting can support before you decide.