Water Heater Installation in Birmingham, AL
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What a new water heater needs to handle here
Water heaters here don't face the kind of hard freeze that stresses a tank up north. Winter nights average 35°F from December through February, and homes only need the furnace running November through March. But Alabama's weather brings its own risk. The area has logged 166 damaging wind events over the past ten years, and statewide, 18% of households lost power for 24 hours or more in 2024. A gas water heater with a standing pilot will relight itself once power comes back. Most electric models and gas units with electronic ignition also restart on their own, but it's worth confirming with whoever installs yours.
The federal minimum efficiency for a new storage water heater isn't one number. It's a formula applied to the tank's rated volume, and it works out differently depending on the size you choose. Whoever installs your replacement can tell you the minimum that applies to your tank.
- 35°F
- the average winter night, and colder incoming water means longer heating
- 5 months
- November through March, the months homes here need heat
- 18%
- of Alabama 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
- How do I know it's time to replace my water heater?
- Age is the first thing to check. Look at the rating plate for the install date, then look at the tank itself for rust colored water, a puddle at the base, or a tank that's warm to the touch on the outside. A unit that can't keep up, running out of hot water faster than it used to, is also telling you the tank or the burner is wearing out. Once a tank starts leaking from the tank itself rather than a fitting, it needs to be replaced, not repaired.
- Should I switch to a tankless water heater?
- It depends on what you want from your hot water, not just your bill. A tankless unit heats water as you use it, so you don't run out partway through a shower the way you can with a tank, and it takes up far less space on the wall. It costs more to install than a tank unit and may need changes to your gas line or venting to work, so a contractor needs to look at your home before you can know what that switch actually involves. Homes with hard water need the unit descaled on a schedule, since scale buildup is what shortens a tankless heater's life.
- What changes when you install a tankless water heater?
- The tank goes away, and with it the standby heat loss that comes from keeping a full tank of water hot around the clock. In its place is a unit mounted on the wall that fires up only when you turn on a hot tap, so it uses fuel only while water is actually running. Gas tankless units need their own venting, sized and routed for that unit, which is different from what a tank heater used. Depending on your home's existing gas line and electrical setup, the installation may need more than a straight swap, which is something a contractor can price once they've seen the house.