Water Heater Installation in Jefferson City, MO
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What a Jefferson City winter asks of a water heater
Cole County sees winter nights average 25°F from December through February. Homes here run their heat October through April, seven months of the year. The water coming into the tank runs colder through those months, so the unit works harder to bring it up to temperature, and it often does that work in a garage or basement that is colder too.
Power doesn't always stay on. Missouri households had a 19% chance of losing power for 24 hours or more in 2024, and Cole County has logged 21 damaging wind events and 4 winter storms over the past ten years. A gas water heater with a standing pilot keeps working through an outage. One with electronic ignition won't light until the power is back. The federal minimum efficiency for a storage tank isn't one number either. It's set by the tank's rated volume, so the right minimum depends on the size going in.
- 25°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 19%
- of Missouri 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 $270 a year to run in Missouri compared with an electric water heater.
Estimates for a typical Missouri home, from EIA household energy data and Missouri 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. Tank water heaters have a working life, and once yours is old enough that a contractor tells you it's near the end of it, a repair is just a delay before the next one. Look at the bottom of the tank for rust or a wet floor around the base. That's the tank failing from the inside, and it doesn't get better. If your water isn't getting as hot as it used to, or you run out faster than before, the tank may have sediment built up on the bottom, which cuts into how much hot water it can hold and heat. A contractor can tell you whether what you're seeing is a sign to replace it now or something worth fixing.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on your house. A tankless unit heats water as you use it instead of storing a tankful, so you don't run out partway through a shower and the unit isn't sitting there keeping a tank hot when nobody's using water. It takes up a lot less space too, since there's no tank. What it doesn't do is deliver hot water instantly at the far end of your pipes. The water in the line still has to travel, same as with a tank. If your main reason is never running out, tankless solves that. If your main reason is speed at the tap, it won't change much.
- What changes when you install a tankless water heater?
- The biggest change is what the unit needs to run. A tankless heater draws more power or gas at once than a tank does, because it's heating water on demand instead of keeping a tank warm gradually. That can mean upgrading the gas line, the electrical circuit, or the venting to match what the new unit requires. None of that is a sign anything is wrong. It's just what the equipment needs, and a contractor will look at your gas line, wiring and venting before installing one to know what has to change.