Water Heater Installation in Moline, IL
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What a Moline winter asks of your water heater
Homes here need heat from October through May, and your water heater is working the rest of the year too. Winter nights average 18°F from December through February, and colder groundwater coming into the tank takes more energy to raise to the same temperature at the tap.
Rock Island County has logged 23 winter storms and 87 damaging wind events over the past ten years, and across Illinois 16% of households lost power for 24 hours or more in 2024. A gas water heater with a standing pilot keeps working through an outage. One with electronic ignition won't light until power is back, though it will restart on its own once it does. Whatever size and type you choose, it has to meet the federal minimum efficiency set for that tank's volume, since the standard is a formula that varies by size rather than one number for every unit.
- 18°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?
- Look at the age first. If it's an older tank and you're already calling for repairs, a repair now just delays the same decision. Rust colored water from the hot tap, a tank that's rusting on the outside, or water pooling underneath are signs the tank itself is failing, and a tank that's failing can't be fixed. If it's still running but struggling to keep up with what your house needs, or making popping and rumbling noises from sediment built up inside, replacement is worth planning for even before it fails outright.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on whether your current tank is old. A tankless unit heats water as it flows through instead of storing it, so it won't run out partway through back to back showers the way a tank can. It also takes up less space and tends to last longer than a tank. Switching usually means changes to the gas line, venting, or electrical setup, so a contractor needs to look at your home to say what's actually involved.
- What changes when you install a tankless water heater?
- The water heater stops storing hot water and starts heating it as it flows through, which means the unit itself is smaller and usually mounts on a wall instead of sitting on the floor. Because it works differently than a tank, the gas line, venting, and sometimes the electrical connection often need to be upgraded to match what the new unit requires. Where it goes in your home may also change, since a tankless unit doesn't need the floor space or drain pan a tank does. A contractor can walk through your specific setup and tell you what needs to change to make the switch.