Water Heater Installation in Franklin, TN
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What a Franklin winter asks of a new water heater
Winter nights here average 30°F from December through February, and homes need heat from October through April, seven months of the year. A water heater runs through all of that, working alongside the furnace rather than on its own.
Power matters too. Twenty percent of Tennessee households went at least 24 hours without power in 2024, and Williamson County has seen 10 winter storms and 205 damaging wind events over the past ten years. A gas water heater with a standing pilot keeps working through an outage. One that relies on electronic ignition does not. Federal efficiency minimums for storage water heaters are set by a formula based on the tank's rated volume, applied differently across draw patterns, so the right minimum depends on the size of the tank going in. Whoever installs your new one should size it to your household, not just swap in whatever was there before.
- 30°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 20%
- of Tennessee 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 $300 a year to run in Tennessee compared with an electric water heater.
Estimates for a typical Tennessee home, from EIA household energy data and Tennessee fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Check the data plate for its age first, since a tank that's getting old is the most common reason to replace one before it fails. Beyond age, watch for water that never gets quite hot enough, rusty water, popping or rumbling sounds from sediment in the tank, or water pooling around the base. A tank that's leaking should be replaced right away, not repaired, since a cracked tank only gets worse. If yours is older and showing any of these signs, it's worth having a contractor look at it before it fails on its own schedule instead of yours.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on whether your current tank is failing. A tankless unit heats water as it flows through instead of storing it, so you don't run out partway through a shower, and it takes up much less space than a tank. It also tends to last longer than a storage tank. What it won't do is fix low water pressure or problems in your pipes, since it only changes how the water gets heated, not how it moves through the house. A contractor can look at your gas line, venting and water use to say whether it's a good fit for your home.
- What changes when you install a tankless water heater?
- The unit changes from a tank that stores and reheats water to one that heats it as it flows through, so there's no tank sitting full of hot water waiting to be used. Because of that, the venting is different, and gas-fired tankless units often need a larger gas line than a storage tank did to deliver enough fuel for the higher burner output. It mounts on the wall instead of standing on the floor, which frees up floor space. Since the pipe and venting requirements change, this isn't a straight swap, and a contractor needs to check your gas line and venting before installing one.